Wide Voltage Trim Power Supplies: The Benefits Of Linear Supplies Without The Drawbacks

Focus:

Since the beginning of the electronics industry one of the desirable attributes of a power source was its ability to vary its output voltage from close to zero up to a maximum desirable voltage for the intended application. In the old days of linear power supplies, this capability was easily accomplished. But with the advent of switched-mode power supplies (SMPSs) design engineers gave up the voltage-range feature as a compromise to gain the higher efficiency and other attributes of SMPSs. Nevertheless, many applications still require wide voltage adjustment. After discussing these applications, a series of recently introduced power supply modules from Excelsys with wide output trim capability are described with details on how they achieve their wide output ranges by using discrete PWM circuits and the benefits of using these modules in place of laboratory-style or custom power supplies.

What you’ll learn:

• How to achieve wide output-voltage adjustment using off-the-shelf power supplies

Notes:

This article contains an interesting list of medical, RF, industrial and other applications requiring power supplies with wide output-voltage adjustment

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Author & Publication:

Kevin Parmenter, Excelsys Technologies, Chandler, Ariz, How2Power Today, Aug 15 2016

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