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Power Around the Web

A wide variety of power electronics resources are available online. This section points to the many relevant websites provided by trade magazines, industry organizations, vendors, and academic and research institutions. At these sites, you’ll find design tips and techniques, product and technology information, industry and research news, job information, bios about technology and business leaders, and technological history—all related to power electronics.

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Blogs

In this blog about “all things power supply,” application engineers at Acopian (a U.S. manufacturer of power supplies) have posted application-related tips on such topics as connecting power supplies in series, sequencing power supplies, and creating an audible alarm for detection of blown fuses. The first blog entry recalls Acopian’s early days (1957), when it supplied not power supplies but a solar powered radio. view »

The website for this online store, which sells electronic components, materials, test equipment, etc, hosts a general electronics blog written by the company's in-house tech guru George Leger. While some of these entries may be aimed at hobbyists or students of various backgrounds, engineering students may also find many entries informative. Several entries provide basic information on use of oscilloscopes, multimeters and other test equipment. In the power supply section, there are some interesting entries on variacs and other topics, If you like these, also see George’s YouTube videos at http://www.youtube.com/user/circuitspecialists. view »

The goal of this Yahoo group is “to implement the Design-Oriented Analysis (D-OA) in teaching electronics engineers in universities and industry.” Group members discuss application of D-OA and promote its use to instructors and engineers. Also see the Design-Oriented Analysis websites listed under Design Tools. view »

Dr. Fred A. Engleberry blogs on power supply design issues on Fairchild Semiconductor’s website, where you’ll find posts on issues such as MOSFETs, gate drives, and dc-dc converters. Fred A. Engleberry, which abbreviates to F.A.E, is actually real-life Fairchild FAE Ken Coffman, whose humorous writing style entertains as it instructs. Ken’s blog appears to be part of a larger blog with additional posts on power supply design-related topics. view »

This broad-based electronics design magazine features a Power Management Design Center, which provides “news and in-depth technical information for system designers responsible for specifying or selecting power sources for electronics applications.” Design Ideas related to power supply design and Margery Conner’s Power Source Blog can be accessed here. Also see Power Management page. view »

This product magazine provides many articles on power products including power components and power supplies, articles on power technology trends and power product selection. From the same publisher, Hearst Power Management Semiconductor Applications Center also provides power product information plus design tips, reference designs, and blogs. view »

The site formerly known as analogZONE includes a highpowerZONE, with power related commentary, new product information, and design articles. Also see greenpowerZONE and greentechzone. view »

Rick Zarr of Texas Instruments writes this thought-provoking and entertaining blog discussing issues related to energy generation, energy and power conversion, and energy consumption. He explores trends and emerging technologies that affect energy generation and its use in a variety of applications. He makes his points by citing historical facts, data on energy use, and other technical information. view »

Reading the blog’s title and subtitle (“from the founder of a renewable energy start up”),it quickly becomes clear that Erik Limpaecher, a co-founder of Princeton Power Systems, will be writing about his experience as an entrepreneur in the renewable energy field. But this blog is also a great source of technical information and opinion on power electronics, particularly as it relates to renewable energy, electric vehicles, LEDs, and other emerging applications. Limpaecher gives who, what, and where info on advanced power semiconductor R&D. A refreshing change from the many anonymous technical blogs, this one provides plenty of background on the author. view »

Marc Perron writes this blog discussing trends concerning FPGA-based power electronics and embedded systems. Many blog entries comment on interesting articles on FPGA-based designed in motor control or power supply applications. The emergence of FPGAs as an alternative to DSPs and MCUs in these applications is often discussed. Perron is president of Alizem, a system-level FPGA IP core company specialized in power electronics applications. view »

An impressive resource for those interested in high-voltage design, this site includes information on high-voltage components and power supplies (including a buyers guide), design issues, safety, industry news, books, research facilities, and applications. The contact for the site, Fred Wright, also writes a blog. view »

A blog by this provider of variable-speed drives and controls offers general technical information on the application of variable speed drives and motors. Some example blog titles include “Variable Speed Drives and Motor Braking,”” Defining Your Variable Speed Drive Requirements – A Checklist,” “Brake Choppers Demystified,” “NEMA Motor Speed/Torque Characteristics,” and “Electromagnetic Compatibility (EMC) and Variable Speed Drives.” view »

Currently an applications engineer at Linear Technology, Jones blogs on SMPS design. The entries are essentially design articles with lots of technical detail.Some good articles on digital power control can be found here. At his Proclivis site (http://www.proclivis.com), Jones also blogs on other issues related to tech business, applying the engineer's analytical viewpoint to a variety of issues. view »

On the Power Integrations website, the mysterious Mr. Green blogs regularly on “Energy Efficiency Standards, Regulations, and Other Green Matters.” This is a good source for news on energy-saving initiatives related to consumer products, particularly the Energy Star programs. view »

At the Picotest.com blog, design consultants and authors Steven Sandler and Charles Hymowitz discuss test issues arising in the areas of RF, instrumentation and power electronics. view »

This Global Sources site offers industry news, design articles and videos on power supply design and power management topics. Site includes a blog by Ram Anant, an engineering manager at Texas Instruments. view »

The site provides power design articles and video courses, new product information, industry news, and a blog by the editor. view »

Along with product information from the company, this blog provides application tips for users of ac-dc power supplies and dc-dc converters. Entries address subjects such as cold-temperature startup, hipot testing, safety standards, series connection of supplies, extending fan life, and more. This blog is written by TDK-Lambda’s mysterious Power Guy. view »

Kollman, a senior applications engineer and distinguished member of the Texas Instruments staff presents tutorial and how to information on many power design topics in his Power Tips! Series for EETimes and their PowerManagementDesign Line. Since starting this blog in 2008, Kolllman has amassed entries on numerous power supply design issues. Blogs seem aimed at a broad audience. In 2011, Kollman began recording a video blog addressing similar technical issues. The link provided here lists the first 50 blog entries/articles in this series. For other blog entries, see http://www.eetimes.com/design/power-management-design and search “Power Tip”. view »

Using his 20+ years experience in power electronics, Lazar Rozenblat has developed this website., which offers extensive information on power supply design and many links to sites with useful information and design tools. Site includes an interesting blog by Rozenblat and listings for Power Supply Design Jobs. view »

For the serious power supply designer, Jerrold Foutz’ site is a must read. Foutz, who has over four decades experience in power electronics says about his site, “Here you will find solutions to the most difficult problems facing you as a power supply designer, a tutorial that places power supply design problems in context, and resources that aid in your power supply design tasks.” Resources include recommendations on power supply design texts and useful websites as well as Foutz’ power supply design blog. view »

Engineers and marketers at Vicor blog about this company’s power products (dc-dc converters, filters, power management devices, and more), power conversion technology, design tools, application issues, relevant technology news, and the company’s participation in industry events. view »

On this industry consortium’s website, you’ll find detailed background information on wireless battery charging, a blog on the topic, and news about the group’s wireless battery charging standards. The site also offers a list of technical articles on wireless battery charging. view »

Charts & References (Energy Related)

In 1999, Intel fellow Fred Pollack gave a talk “New Microarchitecture Challenges in the Coming Generations of CMOS Process Technologies” in which he presented the now classic graph predicting how (if the trend continued) rising power consumption for processors built in successive generations of CMOS would push CPU power density to the level of the sun’s surface in another decade. Of course, that didn’t happen. Pollack’s graph plotted power density versus process geometry with CPU generations identified on the curve (this graph is available on slide 8 of http://research.ac.upc.edu/HPCseminar/SEM9900/Pollack1.pdf). Others took this data and ran with it when discussing power management challenges for power semiconductor and VRM designers. view »

Simple illustrated diagram shows the flow of energy into the data center starting from the utility through distribution to the facility level and down to rack-level and board-level power. Chart was presented at APEC 2008 in Arnold Alderman’s plenary talk “Follow the power, Summary report on the 2007 Energy Efficiency Workshop, Sponsored by EPRI and PSMA.” Energy Customer Chain diagram appears on slide 3. For another point of viewpoint on electricity flow in the data center, see slide 4 of Jonathan G. Koomey’s APEC 2008 plenary, available at www.apec-conf.org/2008/images/PDF/2008/Plenary/koomey_presentation.pdf. view »

This “Comparison of Energy Densities for Various Chemistries” chart from Nexergy presents a graph of volumetric energy density versus gravimetric energy density for various established and emerging battery chemistries. These include lead acid, NiCd, NiMH, alkaline, Li-ion, Li-metal, and Li-polymer, Zn/Air, Al/Air, and Li/Air. view »

In Power Integrations’ Green Room, you’ll find international energy efficiency guidelines listed by agency (or program), by application, and by location. The applications include all types of consumer electronic products as well as appliances, lighting equipment, and office equipment. Agency names are linked to pages with overviews of the agency’s energy efficiency requirements and additional links for more details. view »

Published by the Electricity Storage Association, this “Competitive Energy Storage Technologies” chart graphs the discharge times and system power levels associated with different energy storage technologies. These include supercaps, flywheels, superconducting magnetic energy storage, compressed air energy storage, hydrogen energy storage, pumped hydro, and various battery chemistries. view »

On this page, Lazar Rozenblat defines basic concepts such as energy, work, and power, and explains the relationships between these terms, particularly as they relate to electrical energy and power. The page also provides two calculators: one converts between watts and other units of power, the other converts between joules and other units of energy. A nice feature: the calculators show equivalent values for all the different units simultaneously. For example, type in a value in watts and you’ll immediately see equivalents in volt-amperes, joules/sec, calories/second, horsepower, etc. view »

This spreadsheet charts the annual energy costs and savings of EPAct motors versus Pre- EPAct motors versus NEMA Prem motors over a wide range of motor sizes (1 hp to 500 hp). Users can specify their motor usage in annual operating hours and their electricity cost in cents per kWh. Also, see the “Motor Decisions Matter 1-2-3 Spreadsheet,” which is designed to “help motor service centers, vendors, utilities, energy-efficiency organizations, and others convey the financial benefits of sound motor management to their customers.” view »

Pie chart on this U.S. Department of Energy site shows a breakdown of home energy use due to space heating, space cooling, water heating, lighting, computers and electronics, appliances, refrigeration, and other. view »

Flooded lead acid deep-cycle batteries provide energy storage in golf carts, electric vehicles, boats, RVs, and solar and wind power applications. Ever wondered how these batteries are made? You can watch the whole process in this fascinating 12-minute video on “Deep Cycle Battery Manufacturing 101,” which was produced by the U.S. Battery Manufacturing Company. The video takes you step by step through the battery manufacturing process, starting with pallets of raw materials and walking you through all the production steps until pallets of finished battery products are loaded onto outgoing trucks. view »

Color-coded maps show the solar photovoltaics (PV) resource potential and concentrating solar power (CSP) resource potential for the United States. Average annual solar resource data is quantified in terms of kWh/m2/day. view »

The Ranges of Standby Power Chart produced by Lawrence Berkeley National Laboratory displays the standby power consumption of various types of consumer electronic products. Product categories include audio equipment, battery chargers and battery powered devices, home automation and security, small kitchen appliances, home office equipment set-top boxes, telephone equipment, TVs and VCRs, and white goods. Although the number of products for which power consumption was measured varies from product to product, in most cases, the chart shows minimum, average, and maximum values of standby power consumption for each product. The data used to generate the chart is also provided in a table. view »

On this U.S. Department of Energy page, you’ll find a list of the typical wattages for a variety of appliances ranging from aquariums to personal computers to waterbeds. The values are based on nameplate ratings on the appliances. This page also provides formulas for consumers to calculate the energy use and costs for their appliances. view »

Color-coded map show the “predicted mean annual wind speeds [in meters/second (m/s)] at 80-m height” across the U.S. An area is considered suited to wind power development if the annual average wind speed is approx. 6.5 m/s or greater. Map allows you to click on a specific state and view a wind speed map for that state. After viewing the maps, see the state wind resource potential tables, which provide state-by-state estimates of the “windy land area”, the potential power generation capacity in megawatts (MW) that could be installed on that land, and the potential annual energy generation in gigawatt-hours that could be produced with that capacity. view »

The U.S. Energy Information Administration’s report “International Energy Outlook” forecasts energy demands and energy generation capacity across different energy sources (fuels and technologies), regions, and economies through the year 2030. Included here in chapter 1 are charts forecasting worldwide (WW) electricity generation by fuel type (renewable, coal, natural gas, nuclear, liquids); WW renewable electricity generation by source (geothermal, wind, hydroelectricity); world nuclear generating capacity by region. See chapter 5 for charts forecasting growth in world electric power generation and total energy consumption and electricity generation broken down by economies (OECD vs. non-OECD countries), regions, fuel types, etc. Also, see projections in “Solar Photovoltaic and Solar Thermal Electric Technologies.” view »

The U.S. Energy Information Administration’s International Energy Statistics page provides a breakdown on electricity generation and consumption by country for the years 1980 through 2008. Site also provides other energy-related statistics. view »




Charts & References (Power Electronics)

The “Interpower NEMA wall chart” lists the different styles of ac power plugs and receptacles used in the U.S. For each combination of current and voltage rating, photos of the available connector styles are shown along with details about NEMA configurations, blade styles and locking capability, and recommended cables. view »

Baldor, a provider of industrial electric motors and other products, offers this page of motor-related formulas and rules of thumb with explanations of how to use them and example calculations. Formulas encompass mechanical formulas; temperature conversion; high-inertia loads; synchronous speed; frequency and number of poles of ac motors; relation between horsepower, torque, and speed; motor slip; symbols (definitions); equivalent inertia; electrical formulas; locked rotor current from nameplate data; effect of line voltage on locked rotor current; basic horsepower calculations; accelerating torque; and duty cycles. view »

This chart presents a family tree of popular capacitor technologies. The chart covers fixed-value capacitor types including electrolytic and electrostatic with 17 categories identified. Originally created by John S. Bowers, Program Engineer at Sandia National Laboratories for his presentation at the PSMA Roadmapping Workshop, this chart was republished in the online version of May 2006 editorial in Power Electronics Technology magazine. This editorial also notes some trends and projections relating to capacitor development that Bowers discussed at the PSMA workshop. click on "Treasures Ahead For Those Seeking Joules" and scroll down the page to view the chart. view »

Created for “people who know the basics of switchmode power supplies,” this website provides tools for calculating for Vin/Vout for 8 popular topologies and the PFC pre-regulator. With each topology, there are links to detailed design notes on how to use the calculator. Diagrams and one-sentence descriptions of each topology are shown. There’s also an inductor calculator. view »

A company that specializes in high-power power electronics, IDX has created this educational “power electronics tree” that lists the various types of applications for high-power power supplies and semiconductors. Broadly speaking, the tree covers scientific, industrial, and medical applications for these supplies and semiconductors. It features main branches for categories such as particle accelerators, fusion, superconductivity, industrial uses, batteries, power/new energy, semiconductor, and medicine with each of these sprouting smaller branches carrying the names of specific applications. This chart may help engineering students interested in power electronics to envision potential career paths. view »

A company that specializes in high-power power electronics, IDX has created this chart listing categories of high-power power supplies, switches, and oscillators with a breakdown of the various power supply types within these categories. For example, dc power supplies include the thyristor type, transistor series control type, and the switching type. view »

Power Electronic Systems, a design consultant, has created this table listing the basic requirements you’ll need to specify when you require a power supply for your project. The table can be copied and pasted into Excel where you can fill out your specifications, and add or take away requirements as needed. view »

Yole Developpement has published a bar graph showing how many power semiconductor wafers were manufactured by country as of Jan. 2011. This chart appears in a brochure for the marketing research firm’s Power Electronics Fab Database. There’s also a pie chart showing a similar breakdown by region with Asia-Pacific accounting for the lion’s share of power device manufacturing. As the brochure describes, the Power Electronics Fab Database lists details on more than 340+ manufacturers. view »

This wall chart presents a table listing the popular package options for power ICs used across the industry. For each package type, a photo is shown and details are provided about the number of pins, typical dimensions, and common functions offered in the package. The original meaning of the package acronym is spelled out. This chart, which was created by former PET editor David Morrison, was originally published as a pull-out poster in the April 2008 issue of Power Electronics Technology magazine view »

Based on data supplied by the PSMA, this wall chart presents a generic “family tree” showing the various categories of power ICs that are offered by semiconductor vendors across the industry. This chart was originally published as a poster in the February 2007 issue of Power Electronics Technology magazine. Though available at the time, LED drivers were not included in this chart. Also, not listed were system-in-package, dc-dc converter modules with buck converter chips and inductors housed together in IC-style packages. These modules have emerged as a new power IC category. view »

From the Alion System Reliability Center comes this checklist intended to help designers avoid reliability problems with power supplies operating in severe or benign environments. Not only does the list warn of potential power supply design problems, it also offers possible solutions and recommendations. (Per Steve Sandler, note certain out-of-date references to Baker clamps, aluminum capacitors (prohibited in airborne applications) and mica capacitors (all but obsolete.)) view »

A PDF of Texas Instruments’ “Power Supply Topologies” printed poster provides diagrams, equations, waveforms for 12 different SMPS topologies. In addition, titles of TI’s application notes and controller ICs are listed for each topology. The equations give simple equations for ideal transfer function, drain current, drain voltage, diode current, and diode reverse voltage for each topology. Published in 2008. view »

This web-friendly “Switching Mode Power Supply Topologies ”chart on Lazar Rozenblat’s website provides diagrams and equations for 14 different SMPS topologies, which are divided into nonisolating and isolating categories. The equations give simple expressions for dc transfer function, max switch voltage, peak switch current, max rectifier voltage, average rectifier current, and switch utilization ratio. The chart is followed by a brief topology selection guide. view »

The R&D Partnership for Future Power Electronics Technology (FUPET), a consortium of industry and academic organizations seeking to advance the art of power semiconductor technology, has created this roadmap outlining its objectives for the development of silicon carbide power devices for the period from 2005 to 2020 and beyond. Also posted here is a technology roadmap for Low-Loss Inverter Development. view »

Laurence W. Nagel, who developed SPICE (Simulation Program with Integrated Circuit Emphasis) while studying under Professor Donald O. Pederson at the University of California, Berkeley, briefly describes the origins of this program, key contributors, the timeline, and factors influencing its development. He recounts the development of SPICE’s predecessor, the Computer Analysis of Nonlinear Circuits, Excluding Radiation (CANCER) program, as a class project under Professor Ronald A Rohrer and how it led to development of Spice 1 and the subsequent Spice 2 variations. Other contributors to the development of CANCER and SPICE are named, and the seminal papers associated with the introduction of SPICE are listed. Nagel also lists other articles discussing the history of SPICE, other SPICE-related links, and SPICE versions with source code available. view »

Entry by Yves Legrand in Freescale's Embedded Beat blog provides an overview/update on the various wireless power standards and proprietary systems currently in the marketplace. This entry includes a chart listing the frequency bands used by wireless power standards and proprietary systems, and compares other characteristics as well. view »

Design Notes and Tools

Carl Conrad’s website provides an active forum for Spice users as well as Spice-related news, models, and related references. view »

Biricha Digital Power, a UK-based consulting company, offers several digital power design tools on its website. These tools convert an analog type-II or type-III controller to its digital counterpart using analog component values or analog poles and zeros. view »

The site provides information on “how to to design the Boostbuck (Cuk) Converter easily and painlessly.” view »

The Ardem Associates website, which belonged to the late Dr. David Middlebrook, provides information on Design-Oriented Analysis (D-OA), an alternative engineering approach and set of tools for real-world problem solving developed by Dr. David Middlebrook. Although D-OA can be applied to any area of engineering, it has primarily been applied to the design of analog circuits, particularly switched-mode power supplies. This site explains what D-OA is, why it is valuable to engineers, and its origins. The site provides information on the D-OA courses developed by Middlebrook including his old course, “Technical Therapy for Analog Circuit Designers,” which is available for purchase on DVD and the more recent course “Structured Analog Design,” which is available for free as a series of downloadable PDFs. There are also downloads explaining Middlebrook’s General Feedback Thereom. view »

As Neaves explains, “the purpose of this website is to enhance collaboration between those interested in learning and applying D-OA (Design-Oriented Analysis)” an engineering approach and set of tools developed by Dr. David Middlebrook. It provides an introduction to the D-OA topic, including a basic definition, some history, thoughts on why it’s not widely taught in schools, and links to D-OA resources. There’s also discussion about Spice simulation of the General Feedback Thereom transfer functions, and how specific Spice simulators such as Intusoft’s and LT spice support such simulations. view »

Consulting electronics engineer David A. Johnson has created this impressive site, which links to “28,000+ electronic circuits, cross-referenced into 500+ categories” including many categories relating to power conversion. view »

This magazine website features a thermal management buyers guide and thermal management design articles. view »

The site, which describes itself as “the home of DIY audio articles, projects and short form kits” offers an extensive primer on linear power supply design with an eye toward powering audio amplifiers. For the primer, see “Main Index,” then “Site Map,” and finally “Power Supply Design”. view »

Randall Kirschman, a consultant on low and high temperature electronics, has created this “web Site for information and activities related to electronic materials, devices, circuits and systems at temperatures below −55°C/−65°C and above +125°C.” Though not specific to power conversion, the content will be relevant to the design of power systems for extreme environments. The site offers a Q&A-style tutorial that addresses issues such as the definition of “extreme temperature,” temperature limits for electronic components, motivations for extreme temperature operation, hardware design issues, and various aspects of device operation over temperature. Also has a resources section listing relevant books, papers, and courses plus an events calendar. view »

An impressive resource for those interested in high-voltage design, this site includes information on high-voltage components and power supplies (including a buyers guide), design issues, safety, industry news, books, research facilities, and applications. The contact for the site, Fred Wright, also writes a blog. view »

A distributor for high voltage and power products and applications support, High Voltage Connection offers numerous technical articles on high voltage topics. These include insulation methods, spacing requirements, the Paschen curve, definition of high voltage, electric shock, use of avalanche diodes, corona, voltage coefficient issues, and driving capacitive loads. There’s also a glossary of high-voltage related terms. view »

Another fine source of links to high-voltage product information. On the links page, this consultant’s website points you to sources of high-voltage power supplies, capacitors, resistors, diodes, cables/connectors, relays, switches, diagnostics and other components. It also links to sources of thermal management HW and SW, universities with high voltage/pulsed power research, and other related information. A technical data page provides numerous equations and data relevant to the HV and pulsed power equipment design. view »

This site’s Power Electronics section contains tutorials and technical articles by engineer and author Dennis L. Feucht covering an eclectic mix of topics including (among others) the Tymerski switch model; current-sense resistors; the Cuk, SEPIC, and Zeta transformer; various other magnetics issues; and PFC multipliers. There’s also a short course on motor control and articles on field-oriented step-motor control, and maximum motor power and efficiency. view »

From Lazar Rozenblat, founder of the smps.us website, comes this site offering reference and design information on power factor correction (PFC). It includes tutorials, formulas and calculators “intended for newbie engineers, students and hobbyists.” There are sections here on designing a CCM PFC boost converter and bridgeless PFC circuits, and one on the basics of PFC capacitors. There’s also a section for the technically minded consumer explaining why products developed to correct the power factor of home appliances will have negligible effect on your residential utility bill. view »

This simple tool calculates the annual energy cost of a motor based on its rated horsepower and efficiency and the user’s average energy costs. view »

Lazar Rozenblat’s PCB trace width calculator determines trace widths per the complex IPC-2152 Standard for Determining Current-carrying Capacity in Printed Board Design. This tool also provides results per the legacy IPC-2221 standard for comparison. view »

This site provides power-supply design job listings as well as listings by power supply designers seeking employment. Site also includes a forum on power supply design and new power product information. Also, see the related SMPS.com, which offers power supply design information and design tools, and PowerSupply.net, a power supply manufacturers database. view »

Dr. Franki N. K. Poon’s website enables users to design power supplies and transformers, and run simulations of those designs for free. It provides “more than 100 circuits and topologies” and “tens of thousands” of real component models. Aimed at the beginner as well as the experienced power supply designer, PowerEsim enables component loss analysis, generation of essential waveforms, transformer winding design, input harmonics analysis, feedback loop analysis, thermal analysis, MTBF prediction, and generation of a design verification test report. view »

Brad Suppanz, an experienced applications engineer in the power supply and power IC industries, has posted his ”notes on switched mode power supply design, analysis, and simulation techniques as well as some web calculators specific to power engineering.” view »

Christophe Basso, expert on power supply simulation, offers a variety of power supply design resources on his SPICE page. These include a summary of his latest book, information on new application circuits and Spice models, presentations and papers, and component models. Links to vendor and university sites provide access to more downloadable papers, app notes, and seminars. view »

Using his 20+ years experience in power electronics, Lazar Rozenblat has developed this website., which offers extensive information on power supply design and many links to sites with useful information and design tools. Site includes an interesting blog by Rozenblat and listings for Power Supply Design Jobs. view »

For the serious power supply designer, Jerrold Foutz’ site is a must read. Foutz, who has over four decades experience in power electronics says about his site, “Here you will find solutions to the most difficult problems facing you as a power supply designer, a tutorial that places power supply design problems in context, and resources that aid in your power supply design tasks.” Resources include recommendations on power supply design texts and useful websites as well as Foutz’ power supply design blog. view »

From Ed Walker, the author of the Design Analysis Handbook, comes this “practical and easy-to-use advanced worst case analysis software” called Design Master. This tool provides “a fully integrated set of analysis tools, including worst case solutions to design equations, probability estimates of any out-of-spec conditions, sensitivities, and optimized values for design centering.” While the full-featured version of this software must be purchased, you can order a free version, Design Master Lite software (Cloud version), at the link provided here. This free version of Design Master has a limited feature set (when compared with the purchased version), but it is still useful for small projects and for students. view »

YouSpice is a SPICE simulation community, where designers can download or upload free Spice-simulated designs, they also can choose to exchange or sell the projects they consider most valuable and original. Its members are electrical and electronics engineers, university professors, or simply SPICE enthusiasts. The site offers numerous designs of power supply circuits under “Power And Battery Circuits” in the projects section. view »




Design Tools From Vendors

Tools calculate inductor specifications and identify suitable inductor models for buck, boost, buck-boost, and SEPIC converters; calculate core and winding losses for inductors (standard and coupled inductors); and present Spice models and S-parameters for the vendor’s inductors. IC/Inductor matching tool identifies a suitable inductor for specific power ICs from different vendors. view »

This tool helps you to select components within the SupIRBuck family of integrated voltage regulators, and then simulate designs using these voltage regulators. After you enter your basic dc-dc converter requirements, the tool generates a reference-design based schematic along with a bill of materials (BOM); allows you to perform ac, steady-state and transient analysis; and simulate thermal performance. Tool also allows you to modify R, L, and C component values and PCB design parameters. You must register to use this tool. view »

Core supplier Magnetics provides software to aid engineers in the selection of its cores when designing dc output inductors, input chokes, PFC inductors, and high-current inductors; common-mode filter inductors; current transformers; and mag amps. view »

For power converter and power system designs based on National Semiconductor’s power ICs, WEBENCH tools help engineers evaluate large numbers of design options. Power Architect can be used to quickly design and simulate complete power systems with multiple supply rails and optimize these designs for footprint, efficiency or cost. WEBENCH Visualizer enables engineers to sort through “billions of power supply design alternatives in seconds.” view »

This online design center allows users to create dc-dc converters and power supplies based on Vicor products using the company’s simulator or by using one of Vicor’s hundreds of pre-defined designs. The tools provided here allow you to select a dc-dc converter solution, configure a product, and simulate its electrical and thermal performance. view »

Tool calculates switching losses and estimated temperature rise for the company’s IHLP inductors in buck, boost, and buck-boost converter applications based on user-specified operating conditions. These include input and output voltage, frequency, output current, ambient temperature, and the selected 0.1-µH to 10-µH inductance value. view »

From Powercast, a calculator based on the Friis equation estimates the received power in wireless power applications based on parameters such as transmit frequency and power, receiver antenna gain, and distance. Default values are shown for the company’s TX91501 transmitter. This tool calculates received RF power before conversion to dc, dc power after conversion by PowerHarvester receivers and battery recharge times for the receivers. view »

Forums

Carl Conrad’s website provides an active forum for Spice users as well as Spice-related news, models, and related references. view »

From Aspen Labs, the EEWeb Electronics Forum includes a power forum where users post questions related to power conversion/power management, which EEWeb engineers and other users then respond to. Judging by recent posts, this looks like a good forum for engineering students. It appears to be edited since it omits the extraneous comments you may see in other forums. Per Elaina Radon, EE Web Forum Technical Editor, this forum supports “threaded comments, ability to upload images and files, LaTex equations, etc.” Site also includes a power management section with power-related design articles. view »

Anyone interested in exploring career opportunities in power electronics should take advantage of LinkedIn. It enables members to network with thousands of engineers working in the field as well as the many recruiters who continually post job openings on LinkedIn for power electronics engineers. Two of the biggest and most active groups in the power area are “Power Electronics” and “Power Management Professionals.” Within these groups there are also subgroups for various special interests. A great source of information on the people in the power electronics industry--you can read thousands of profiles (essentially resumes or CVs). LinkedIn discussion boards also host a steady stream of discussions on technical issues. You have to register to use LinkedIn. view »

Described as a power electronics platform, this site is intended as a forum in which engineers can discuss and solve their power electronics problems. Targeting both working engineers and students, the site offers information on the fundamentals of power electronics as well as detailed technical information. The site also includes a Q&A section and job listings for PE engineers. PowerGuru.org is a joint project of several manufacturers--LEM, Mersen, Proton-Electrotex, SEMIKRON, Sindopower, Epcos, and Weidmüller--and the site offers live chat with these companies. Contributed articles, a newsletter, and awards for frequently read articles are among the planned features. view »




Industry, Academic, and Professional Organizations

Founded in 2009, GRAPES is a National Science Foundation Industry/University Cooperative Research Center focused on “design, development, evaluation, control, and standardization of grid-connected power electronic equipment on both the supply and load side of power systems.” Its mission is “is to accelerate the adoption and insertion of power electronics into the electric grid in order to improve system stability, flexibility, robustness, and economy.” On the academic side, its participants include the Universities of Arkansas and South Carolina. Resources here include descriptions of current research projects, facilities, and employment opportunities. view »

DOSA is a consortium formed by dc-dc converter manufacturers to develop and promote industry standards for power converter modules. This website posts specifications for DOSA standards for isolated and nonisolated dc-dc converters, and also lists member companies. view »

ECOS Consulting and the Electric Power Research Institute (EPRI) built this site “to initiate a global dialogue about energy efficient power supplies.” The site provides information on initiatives to study and improve the active mode-efficiency of power supplies, both external and internal. This site discusses opportunities for improving power supply efficiency on a national scale and organized efforts within the U.S. to improve power supply efficiency. The site presents test reports on the performance of specific power supply models, and other power supply-related research, gives information on power supply test protocols in development, and discusses power supply efficiency policies. (For information on standby power consumption see Lawrence Berkeley National Laboratory's website, http://standby.lbl.gov.) view »

This industry-led organization was created to promote “research, innovation, education, publicity and technology transfer in the area of power electronics in Europe.” For non-members, the site offers access to industry news; information about conferences, seminars, and workshops; a list of members and contacts; listings for power electronics jobs in Europe, and links to other PE websites. The site also offers a free trial of an online PE training course. view »

The EPE website offers news about the organization and its conferences, abstracts of journal papers, and descriptions of papers, books, and simulation tools related to power electronics education, electric and hybrid vehicles, and wind energy. Links to regional organizations and universities can also be found here. view »

For power electronics professionals interested in European markets, this site offers a number of helpful resources including information on environmental regulations and safety regulations as they relate to power supplies marketed in Europe, design information, new product news, marketing data, and job postings for positions in Europe view »

Site provides basic information about power and energy conversion in satellites, discusses R&D conducted by the ESA’s power and energy conversion division, and the missions enabled by this division. It also provides information on its Power Laboratory, which is comprised of three facilities---the Power Systems Laboratory, the European Space Battery Test Centre Laboratory and the Solar Generator Laboratory. Lab facilities and services offered by these labs are described. view »

This global organization sponsors a variety of conferences, workshops, and tutorials relating to power and energy conversion in industrial applications. Among the IAS’ conferences are the International Conference on Power Electronics and Drives Systems and the Energy Conversion Congress & Exhibition. The IAS website provides information on all IAS events, standards information, and listings of IAS publications. view »

The PELS site offers details on IEEE standards-related activities, conferences, and workshops related to power electronics. Also found here are contacts for local PELS chapters and recipients of PELS honors. The PELS newsletter is available online at http://ieee-pels.org/publications/newsletter. view »

This is the name of a public awareness campaign “sponsored by a consortium of electric utilities, industry trade associations, and others” which provides information for those involved with motor management. Calculators and industry case studies on this site inform users about the energy and cost savings that can be achieved through use of energy efficient motors. Site also provides information on motor-related energy efficiency programs. view »

India’s Department of Information Technology launched the National Mission on Power Electronics Technology (NaMPET) program “to provide the country with capability to become a dominant player in Power Electronics Technology at the international level.” A variety of organizations participate in this program including academic institutions, research and development institutes, and companies that manufacturer or use power electronics. This site provides information on power electronics research and research facilities in India, PE courses and workshops, and a power electronics discussion forum. view »

North Carolina State University leads this consortium of 7 universities and laboratories and 18 companies, whose goal is “to invent and manufacture wide bandgap (WBG) semiconductor-based power electronics that are cost-competitive and 10 times more powerful than current silicon-based technology on the market.” In addition to describing the goals of this new organization and naming its members, this fact sheet offers an introduction to widebandgap semiconductors (including a short video and poster) for the lay man, explaining the energy savings and other benefits promised by widebandgap semiconductors in the targeted applications. view »

The Power Management Bus (PMBus) website offers information about PMBus, which is described as“an open standard power-management protocol with a fully defined command language that facilitates communication with power converters and other devices in a power system.” This site is run by the PMBus Implementers Forum (PMBus-IF), which is part of the System Management Interface Forum (SMIF), Inc., a nonprofit industry standards group. The PMBus website offers access to the latest PMBus specification and open IP agreement, articles and other materials about PMBus, names of vendors that are PMBus adopters, news about PMBus compliant products, and information on PMBus-IF membership. view »

This site offers a variety of resources for engineers and other professionals working in power electronics including design information, new product information, technology forecasts, power supply market data, and Job postings. The industry links section contains pages of listings for governmental and industry organizations, standards organizations, and university resources. view »

The Power Management Professionals Group on LinkedIn has been established to facilitate the networking of professionals in the power management field. Group members can contact any other member in the group without an introduction or to establish a direct connection. Members can also participate in on-line discussions about areas of common interest. As of July 2009, the group has over 2800 members. Visit this site to apply for membership in the group, or to access industry news, new product information, or design tips. view »

The members of PRIMES, a research center for power electronics based in Tarbes, France, include big companies such as Alstom, Schneider Electric, Hispano-Suiza (Safran-Power), EADS IW, and Freescale, as well as five academic research labs. Their research focuses on the themes of mechatronics (the synergistic combination of mechanics, electronics and real-time computing) and energy management. This site mainly provides details about the PRIMES organization and the its research. The Technical Platform tab describes PRIMES' laboratory equipment and tools. view »

Established in August 2009 in Japan, FUPET is a consortium of industry and academic organizations conducting R&D to advance the art of power semiconductor technology particularly SiC devices and to develop semiconductor technologies (devices and systems) to realize highly efficient energy conversion systems. The site provides details on FUPET’s members and its various R&D activities. It also includes interesting technology roadmaps for SiC Power Electronics Development and Low-Loss Inverter Development. view »

This trade association consists primarily of North American transformer and inductor manufacturers, industry suppliers, safety and regulatory agencies, and consultants. This site provides information on manufacturers’ surplus raw materials that are available for sale. These materials include bobbins, cores, enclosures, manufacturing and test equipment, foils and specialty wire, laminations, lead wire, magnet and winding wire, mounting hardware, paper and insulation, varnish, and other materials. A product index lists various categories of magnetic components and materials together with the names of the TTA member companies that supply them. A TTA membership application is available at this site. view »

On this industry consortium’s website, you’ll find detailed background information on wireless battery charging, a blog on the topic, and news about the group’s wireless battery charging standards. The site also offers a list of technical articles on wireless battery charging. view »

Jobs

If you specify power electronics” as your keywords and select “Engineering” as your category, your search will turn up pages of job postings for power supply designers and other positions requiring power electronics expertise. Technician positions are also included in these results. You can narrow your search by company, location, or period of time and other search options. view »

How2Power’s Careers in Power Electronics section is intended to help power electronics (PE) engineers and other EEs with experience or interest in power conversion to learn more about career opportunities in various industries. In this section, you’ll find articles discussing opportunities, technical requirements, and design challenges for power electronics engineers and related positions in different industries & application areas. Many of these articles contain lists of job openings for PE engineers and related positions in the specific industries being discussed. Though these job listings may not be current, they often provide a barometer of ongoing hiring activity in a particular industry. This section also contains articles discussing general business and technology trends that may affect hiring of power electronics engineers and related positions. view »

This site allows you to search for engineering jobs in many EE disciplines including power electronics using the keyword search. Job descriptions are somewhat cryptic. view »

Firm specializes in recruitment of engineers and executives for the “power electronics, process instrumentation, automation and motion control industries.” Their unique website carries entertaining job postings in video form. view »

This industry-led organization was created to promote “research, innovation, education, publicity and technology transfer in the area of power electronics in Europe.” For non-members, the site offers access to industry news; information about conferences, seminars, and workshops; a list of members and contacts; listings for power electronics jobs in Europe, and links to other PE websites. The site also offers a free trial of an online PE training course. view »

For power electronics professionals interested in European markets, this site offers a number of helpful resources including information on environmental regulations and safety regulations as they relate to power supplies marketed in Europe, design information, new product news, marketing data, and job postings for positions in Europe view »

Billed as “the #1 place on the internet to find out about green jobs,” this website views the job market through the lens of environmental friendliness. It provides information on renewable energy, energy efficient transportation, and other “green” fields with descriptions of the careers available in those fields, and current job openings. Included here are postings for electrical engineers, other engineers, and scientists. Site also offers other resources on green business, entrepreneurship, and job training. view »

In How2Power Today, the Power Supply Jobs & Technology feature by David Morrison discusses job opportunities,requirements and design challenges for engineers with power electronics and power supply design experience in different segments of the electronics industry. Many of these articles contain a large table listing positions being advertised in the particular area being discussed at the time the article was first published. Past articles have explored opportunities in industries such as automotive, lighting, mil/aerospace, renewable energy, HV power transmission, power supply, and many others. All of these articles have been conveniently archived in the Careers in Power Electronics section of How2Power.com. See the link and description of this section above. view »

Anyone interested in exploring career opportunities in power electronics should take advantage of LinkedIn. It enables members to network with thousands of engineers working in the field as well as the many recruiters who continually post job openings on LinkedIn for power electronics engineers. Two of the biggest and most active groups in the power area are “Power Electronics” and “Power Management Professionals.” Within these groups there are also subgroups for various special interests. A great source of information on the people in the power electronics industry--you can read thousands of profiles (essentially resumes or CVs). LinkedIn discussion boards also host a steady stream of discussions on technical issues. You have to register to use LinkedIn. view »

This site offers a variety of resources for engineers and other professionals working in power electronics including design information, new product information, technology forecasts, power supply market data, and Job postings. The industry links section contains pages of listings for governmental and industry organizations, standards organizations, and university resources. view »

This site provides power-supply design job listings as well as listings by power supply designers seeking employment. Site also includes a forum on power supply design and new power product information. Also, see the related SMPS.com, which offers power supply design information and design tools, and PowerSupply.net, a power supply manufacturers database. view »

This magazine now features David Morrison's column on Career Development in which he discusses job opportunities for power electronics engineers in different industries. This column is available in all three print editions of the magazine--Europe, America, and China. But, if you read the online version, you'll also see a table of sample job listings for whatever industry is beig discussed in Morrison's column. view »

Staffing firm specializes in the placement of professionals in the power electronics industry including positions in design and applications engineering; quality, test, and manufacturing; electronics technicians; sales and marketing, and management. Website allows visitors to search for available positions in these job categories, and then narrow the search using specific technology or application keywords, and by region within the U.S. view »

Described as a power electronics platform, this site is intended as a forum in which engineers can discuss and solve their power electronics problems. Targeting both working engineers and students, the site offers information on the fundamentals of power electronics as well as detailed technical information. The site also includes a Q&A section and job listings for PE engineers. PowerGuru.org is a joint project of several manufacturers--LEM, Mersen, Proton-Electrotex, SEMIKRON, Sindopower, Epcos, and Weidmüller--and the site offers live chat with these companies. Contributed articles, a newsletter, and awards for frequently read articles are among the planned features. view »

If you’ve just started your business as an engineering consultant, or you’re thinking about doing so, read Nathan Sokal’s article, “Consulting — How to Make Sure You Get Paid for Your Work.” This work, which was published in IEEE-USA Today’s Engineer online, provides invaluable advice on one of the biggest potential pitfalls of consulting---dealing with clients who are looking to underpay for your services—or worse yet, obtain them for free. A power electronics expert with decades of consulting experience, Sokal discusses the tactics clients try to avoid paying and the strategies consultants can employ to counter these tactics and ensure payment for services. view »

This firm specializes in the placement of professionals in the semiconductor, analog and power electronics industries including engineering and various management and executive positions. They list a number of power-specific areas as their sub-specialties including power conversion and electronics; uninterrupted power systems; analog & digital ICs; power semiconductors and hybrids; motors, drives and controls; embedded controls; magnetics; solar and alternative energy systems; high-voltage and pulsed power and others. I found no job postings here--the company recommends that you contact them. But the References page is interesting reading as it contains many testimonials from power supply companies. view »

Using his 20+ years experience in power electronics, Lazar Rozenblat has developed this website., which offers extensive information on power supply design and many links to sites with useful information and design tools. Site includes an interesting blog by Rozenblat and listings for Power Supply Design Jobs. view »

This search firm, which specializes in the power management semiconductor and power electronics industries, posts job openings for positions in IC design engineering, applications engineering, power electronics design engineering, technical marketing and technical sales. Anyone can view the posted positions, but you must register with the site to apply for openings. Prospective employers who register on this site can search the firm’s database of job candidates. In addition, those who register at the site can obtain a free copy of the 2008 U.S. Semiconductor Industry Salary Report. view »

People

EEWeb’s Spotlight section (also called Featured Engineer) presents interviews with numerous electrical and electronics engineers including many contributors to the power electronics field such as Christophe Basso, Chuck Mullett, Rakesh Dhawan, Alan Mantooth, Nihal Kularatna, Anthony Esposito, Kevin Parmenter, Bill Peterson, and Peter B. Green. Good Interviews, but no dates to tell you when they were recorded. Interviewees relate how they got started in the field, important work experiences both technical and business related, and share their opinions on industry developments and trends. view »

Meet the engineers from industry and academia who have contributed design features to the How2Power Today newsletter. These authors are experts on a variety of power electronics topics. view »

In this How2Power.com feature, you can read about the services and skills offered by consultants specializing in power electronics design. As you’ll discover from viewing their entries, these consultants have years of experience in power conversion across a wide range of power levels, applications, and technologies. view »

Anyone interested in exploring career opportunities in power electronics should take advantage of LinkedIn. It enables members to network with thousands of engineers working in the field as well as the many recruiters who continually post job openings on LinkedIn for power electronics engineers. Two of the biggest and most active groups in the power area are “Power Electronics” and “Power Management Professionals.” Within these groups there are also subgroups for various special interests. A great source of information on the people in the power electronics industry--you can read thousands of profiles (essentially resumes or CVs). LinkedIn discussion boards also host a steady stream of discussions on technical issues. You have to register to use LinkedIn. view »

The IEEE Power Electronics Society is creating a list of highly qualified instructors who are available to teach professional seminars on various power electronics topics. Instructors are listed along with their seminar topics and notes on their availability for travel. This web page also offers a link to an application for individuals who want to be added to this list. view »

Vuttipon Tarateeraseth has created a fascinating list of bios for many of the legends and innovators in the power electronics field with a focus on those involved with research at the university level and independent consultants. (The list does not cover many of the innovators working in industry.) Also, see Tarateeraseth’s website, which offers other power electronics resources. view »

Since 1977, the IEEE has been presenting this annual award to individuals who have made outstanding contributions to the field of power electronics. Here you will find a list of the award winners along with short bios describing their accomplishments. However, you’ll find additional and more detailed bios for some of these individuals in Vuttipon Tarateeraseth’s Who’s Who in Power Electronics (see link above in this section.) view »

Power Conference Proceedings (Out of Print)

On the occasion of Power Electronics Technology magazine's 30th anniversary in 2005, Myron Miller wrote this commentary looking back on the history of the magazine also know as PCIM. He also discusses the origins of the PowerCon, High Frequency Power Conversion, PCIM, and Power Quality conferences. view »

As far as I know, conference proceedings for the PCIM conference in North America are out of print. I have personal copies of these printed proceedings for 1999 through 2001. In 2002, the name changed to the Power Electronics Technology conference and I have this book as well. Starting in 2003, proceedings for this conference were distributed on CD and I have Power Electronics Technology conference CDs for 2003 through 2007, which was the last year this conference was held. If you have a question about a paper from one of these conferences, email me at david@how2power.com view » view »

Power Magazines (out of print)

The "30 Years of Power Electronics Technology" compilation DVD is an archive of the magazine known first as Solid State Power Conversion,and which subsequently became Power Conversion Intelligent Motion, PCIM/Power Electronic Systems, and Power Electronics Technology. As of July 2011, this DVD is still available for purchase from Penton, the current publisher of Power Electronics Technology. This DVD, which currently lists for $149.95, can be ordered by calling Penton Customer Service at 800-262-1954. Ask for the DVD by name and reference part number PET012007. Note that PET magazine's online archive goes back to January 2001, though the figures are missing in the older articles. view »

Product Guides

Battery Power Products and Technology magazine offers this guide to companies that supply batteries, battery packs or related products or services. view »

Along with industry news, this U.K- based publication features technical articles on motors and motion control, a buyers guide for motion control products (searchable by product or company type) and links to other motor and motion control resources. view »

Affiliated with Hearst’s Electronic Products publication, the EEM Buyers Guide includes a searchable supplier database for Power Sources that lists vendors of ac power systems, ac to dc power supplies, batteries, dc-dc power supplies with each of these topics broken down into many different subcategories of power supplies. Hundreds of companies are listed under each category. As of this writing, nearly 900 companies are listed in the Power Sources section. Aside from the batteries, the suppliers listed here are nearly all power supply module suppliers. For power ICs, see the Semiconductors section of the Buyers Guide. Caveat: You must register to search this database. view »

This magazine website features a thermal management buyers guide and thermal management design articles. view »

An impressive resource for those interested in high-voltage design, this site includes information on high-voltage components and power supplies (including a buyers guide), design issues, safety, industry news, books, research facilities, and applications. The contact for the site, Fred Wright, also writes a blog. view »

Another fine source of links to high-voltage product information. On the links page, this consultant’s website points you to sources of high-voltage power supplies, capacitors, resistors, diodes, cables/connectors, relays, switches, diagnostics and other components. It also links to sources of thermal management HW and SW, universities with high voltage/pulsed power research, and other related information. A technical data page provides numerous equations and data relevant to the HV and pulsed power equipment design. view »

Described as “the International Journal of Electromagnetic Compatibility,” this magazine’s website features articles on design for electromagnetic compliance (EMC) and EMC testing, plus related industry and product news. In addition, a buyers guide lists suppliers of filters, shielding, and specialized EMC test equipment. view »

Magazine website provides information on new magnetic products, industry news, feature articles, and a magnetics buyers guide. view »

This Global Sources site features a power products buyers guide. view »

This site provides power-supply design job listings as well as listings by power supply designers seeking employment. Site also includes a forum on power supply design and new power product information. Also, see the related SMPS.com, which offers power supply design information and design tools, and PowerSupply.net, a power supply manufacturers database. view »

This trade association consists primarily of North American transformer and inductor manufacturers, industry suppliers, safety and regulatory agencies, and consultants. This site provides information on manufacturers’ surplus raw materials that are available for sale. These materials include bobbins, cores, enclosures, manufacturing and test equipment, foils and specialty wire, laminations, lead wire, magnet and winding wire, mounting hardware, paper and insulation, varnish, and other materials. A product index lists various categories of magnetic components and materials together with the names of the TTA member companies that supply them. A TTA membership application is available at this site. view »

Publications

Originally launched in 2008 as the "International Journal of Power Management Electronics,” this free online journal publishes peer-reviewed articles on original research and review articles on all aspects of power electronics. This journal is edited by an editorial board consisting of power electronics experts from industry and academia. Published by Hindawi Publishing Corporation, the journal uses an “open-access” business model, which provides free distribution of the full articles without any subscription fees. Publishing costs are paid by the authors. Hindawi also publishes a number of other peer-reviewed open-access journals on other aspects of electronics and engineering. See http://www.hindawi.com/journals/#Engineering for a list of titles. view »

Battery Power Products and Technology magazine offers this guide to companies that supply batteries, battery packs or related products or services. view »

The online version of Bodo Ault’s magazine posts Bodo’s thought-provoking editorial on the home page along with a listing of articles from the latest issue, which you can download if you register. view »

Along with industry news, this U.K- based publication features technical articles on motors and motion control, a buyers guide for motion control products (searchable by product or company type) and links to other motor and motion control resources. view »

This product-oriented publication offers various power-related resources including Wall Chart references on power supply and battery topics, efficiency-related articles in the Efficiency Zone, and short articles on Power Sources. view »

This broad-based electronics design magazine features a Power Management Design Center, which provides “news and in-depth technical information for system designers responsible for specifying or selecting power sources for electronics applications.” Design Ideas related to power supply design and Margery Conner’s Power Source Blog can be accessed here. Also see Power Management page. view »

This site is a good source of news about the Indian electronics industry including some business and technology news relating to power semiconductors and power supplies. A small Design Guide section offers some power related articles and circuit ideas. view »

The magazine’s power coverage includes articles on power technology trends, power components, FAQs (frequently asked questions) and Basics of Design on power design topics. Ideas for Design include circuit ideas related to power supply design, typically for low-power applications. view »

This product magazine provides many articles on power products including power components and power supplies, articles on power technology trends and power product selection. From the same publisher, Hearst Power Management Semiconductor Applications Center also provides power product information plus design tips, reference designs, and blogs. view »

This magazine website features a thermal management buyers guide and thermal management design articles. view »

In the Circuit Lab section of this website, you’ll find schematics for various power supply, battery charger, and motor control circuits with descriptions of how they operate. (You’ll also find many other types of circuits here.) Other articles related to power conversion can be found in the Technical Articles section and power-related discussions may be found in the Bulletin Board section under the heading Electronics Power. view »

The site formerly known as analogZONE includes a highpowerZONE, with power related commentary, new product information, and design articles. Also see greenpowerZONE and greentechzone. view »

IDTechEx,a firm that provides “global analysis, strategic advice and market intelligence” presents Energy Harvesting Journal.This free portal provides news and commentary about developments in energy harvesting and energy storage technology. Site also includes a glossary of relevant technical terms, descriptions of relevant market reports offered by IDTechEx, and information about their conferences. view »

This site provides power product information, design tips, reference designs, and blogs. Sections of the site are devoted to power over Ethernet, automotive power management, digital power management, display driving, military/aerospace/harsh environments, and power conversion. view »

This free monthly e-newsletter presents innovative design techniques and solutions for power conversion, in-depth reporting on power components, and articles on career opportunities for engineers specializing in power electronics. view »

The PELS site offers details on IEEE standards-related activities, conferences, and workshops related to power electronics. Also found here are contacts for local PELS chapters and recipients of PELS honors. The PELS newsletter is available online at http://ieee-pels.org/publications/newsletter. view »

Described as “the International Journal of Electromagnetic Compatibility,” this magazine’s website features articles on design for electromagnetic compliance (EMC) and EMC testing, plus related industry and product news. In addition, a buyers guide lists suppliers of filters, shielding, and specialized EMC test equipment. view »

Readers of the now-defunct Auto Electronics magazine may turn to this new source of industry news, product information, and design features pertinent to automotive electronics applications. Veteran tech journalist John Day includes coverage of new power components/technology in his reporting. view »

On this venerated magazine's website, a Basics of Design Engineering (BDE) section offers many tutorials on motors and motion control. See BDE—Electrical/Electronic for articles on motors, switches and relays, batteries, and related power electronics topics. See BDE-Motion Control for articles on board-level motion controllers, specialized ICs, microcontrollers, positioning components, control techniques, filtering and more. view »

Magazine website provides information on new magnetic products, industry news, feature articles, and a magnetics buyers guide. view »

The website for Metering International Magazine provide news about metering technology including electric energy metering. A good source of information on “smart metering.” view »

Edited by Bill Schweber, this analog electronics website contains a power management section that includes some power design articles. view »

This Global Sources site offers industry news, design articles and videos on power supply design and power management topics. Site includes a blog by Ram Anant, an engineering manager at Texas Instruments. view »

This magazine site provides power design articles and includes a magazine archive. view »

This magazine website provides power design articles, new product information, and industry news. view »

This email newsletter from emedia contains interesting tutorials on popular power conversion topics. view »

The site provides power design articles and video courses, new product information, industry news, and a blog by the editor. view »

This site provides industry news, new product information, and design articles related to the Power over Ethernet (PoE) IEEE802.3af standard and the proposed IEEE802.3at high-power PoE standard. view »

The website for this bi-monthly Chinese language design magazine allows downloading of articles from current and past issues. view »

The monthly magazine’s website posts editor-in-chief Cliff Keys’ editorial along with power design articles, new product information, and industry news. Site includes sections on automotive electronics and Green technology. view »

From the Darnell Group, this site is a comprehensive and timely source of new power product information, industry news, and market trends. The site also provides a power products manufacturers directory, power-related design features and case studies, and video coverage of power conferences. view »

Advanced Thermal Solutions, Inc., an engineering and manufacturing company publishes.this monthly newsletter devoted to thermal management for electronics. Newsletter offers information on thermal management design and cooling products. view »

At this magazine site, engineers who design power converters or power systems for renewable energy applications will find interesting news about industry trends and developments that may impact their work. Articles such as “PV Micro Inverters and Optimizers: Not Just for Lazy Designers” by Joseph McCabe generate good technical discussion on power converter application issues. view »

While working as an RF system and circuit design engineer, Kirt Blattenberger began using some AOL web space to assemble formulas and reference materials he needed for work. However, he soon discovered that many others were interested in these same materials. Over time, he continued to add content and created the RF Café website, which now houses a fascinating smorgasbord of information for RF engineers. However, the site also contains many useful listings on power electronics topics. From the home page, locate the listings for Engineering Resources, and click on Tech Resources. From there check out links such as Power Supply Design, Transformer Design, Inductor Design, Filter Design Resources, Battery Design, and EMC/EMI/RFI Resources. view »

Published out of the Netherlands, this site is a good source of international news on developments in solar power, mainly related to what’s happening in the solar power marketplace. News coverage is not all cheerleading for solar, so there is some balance here. Also, for those interested in power electronics there is inverter news such as “Top 10 World's Most Efficient String Inverters (< 5 kW.)” view »

Renowned for his power supply design workshops, Ray Ridley has created this site as “a primary source of information for power supply designers and managers worldwide.” If you register, this site allows you to download archived articles (on a range of power supply design topics) from Switching Power Magazine. Also see the Ridley Engineering site. view »

Publications (Corporate)

Published six times per year by Siemens' Energy Sector, this newsletter presents information about the company’s “project highlights, new advances and innovative solutions for the power industry.” In addition to the commercial news, this newsletter provides reports on smart grid-related concepts, government or industry initiatives, conferences, events, and training. view »

Described as a power electronics platform, this site is intended as a forum in which engineers can discuss and solve their power electronics problems. Targeting both working engineers and students, the site offers information on the fundamentals of power electronics as well as detailed technical information. The site also includes a Q&A section and job listings for PE engineers. PowerGuru.org is a joint project of several manufacturers--LEM, Mersen, Proton-Electrotex, SEMIKRON, Sindopower, Epcos, and Weidmüller--and the site offers live chat with these companies. Contributed articles, a newsletter, and awards for frequently read articles are among the planned features. view »

Research

An agency within the US Dept of Energy, ARPA-E was created to spur "transformational energy research." This site provides information on numerous power electronics-related research projects that are being funded by ARPA-E. In particular see the ADEPT section for information on advanced power semiconductors. Also see "other projects." Beyond the power electronics information, you'll find much information concerning research in energy generation, energy storage, and electric vehicles. view »

The members of PRIMES, a research center for power electronics based in Tarbes, France, include big companies such as Alstom, Schneider Electric, Hispano-Suiza (Safran-Power), EADS IW, and Freescale, as well as five academic research labs. Their research focuses on the themes of mechatronics (the synergistic combination of mechanics, electronics and real-time computing) and energy management. This site mainly provides details about the PRIMES organization and the its research. The Technical Platform tab describes PRIMES' laboratory equipment and tools. view »

Established in August 2009 in Japan, FUPET is a consortium of industry and academic organizations conducting R&D to advance the art of power semiconductor technology particularly SiC devices and to develop semiconductor technologies (devices and systems) to realize highly efficient energy conversion systems. The site provides details on FUPET’s members and its various R&D activities. It also includes interesting technology roadmaps for SiC Power Electronics Development and Low-Loss Inverter Development. view »

Learning About Power Electronics

Professor Keyue Smedley and her colleagues and students at the University of California Irvine’s Power Electronics Laboratory produced this 7-minute video that explains the role of power electronics in the world in terms that students and lay people can understand. The video shows examples of power electronics applications such as wind turbines, airplanes, satellites, and appliances, and briefly explains what the power systems do in these applications. The video goes into greater detail in describing the power system used to power a laptop computer. It concludes by showing scenes from UCI’s Power Electronics Lab and encourages students to study power electronics. view »

The IEEE Power Electronics Society is creating a list of highly qualified instructors who are available to teach professional seminars on various power electronics topics. Instructors are listed along with their seminar topics and notes on their availability for travel. This web page also offers a link to an application for individuals who want to be added to this list. view »

This 4-minute promotional video was likely created to attract new customers for Taiwanese power supply manufacturer Power-Win Technology. However, this video may be instructional for engineering students and others interested in getting a glimpse of how switched-mode power supplies are designed and manufactured commercially. Although there’s no dialogue and just a little text to explain what’s being shown, the video presents quick clips of the various departments in the company involved with power supply development, manufacturing, and customer support; and highlights different stages of power supply development and manufacturing. The video even calls out various types of test equipment used by the company. Although processes vary from one manufacturer to another, much of what’s shown here will be similar to what’s done in other power supply companies. view »

Just For Fun

One of many versions floating around the web, this humorous story relates the experience of a customer service rep and the customer who believed his smoking power supply was due to a software problem. You can locate other versions of this joke by Googling "Load Nosmoke.com". view »

In this 30-second video, a colleague of Dilbert creates a power supply by sticking a nail in a piece of wood, then leaves it to Dilbert to finish. view »

For comic relief visit the Power Humor page on the Power Stream website. This page contains many power supply- and engineering-related jokes. view »

 
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