Voltage timer monitors line-connected ac loads

Focus:

A simple circuit consisting of an optoisolator, a counter, and passives measures the time that an ac load is energized. Example uses would be to track usage and power consumption of well pumps, water heaters, furnaces, air conditioners, or other ac-powered loads.

What you’ll learn:

• How to track run-time of ac powered loads

Notes:

An EDN Design Idea

View the Source

Author & Publication:

Michael Petersen, Maxim Integrated Products, Sunnyvale, CA; Edited by Charles H Small and Fran Granville, EDN, Aug 16 2007

This article summary appears
in the HOW2POWER Design Guide.

The Design Guide offers
organized access to
hundreds of articles
on dozens of power conversion
and power management topics.

The Design Guide search results
include exclusive summaries
and accurate "how to" analysis
to help you make faster,
more informed decisions.

Search
for more articles