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Power Measurement Schematics

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Power meter is ±1% accurate

Power meter is ±1% accurate

http://www.edn.com/article/CA217665.html

3½-digit DVM IC measures power factor

3½-digit DVM IC measures power factor

measure power factor to 0.1% resolution and operate from single 9Vdc

http://www.edn.com/archives/1994/042894/09di3.htm

Make a low-cost benchtop power meter

Make a low-cost benchtop power meter

with a few inexpensive ICs and passive components

http://www.edn.com/archives/1998/091198/19di.htm