"For example - a cheap modified wave inverter will often only read 95 volts at the AC output with a common voltmeter, but will read 120 volts AC when checked with an RMS capable voltmeter."
LJD, Don't all AC voltmeters measure RMS voltage? The old analog meters even had peak to peak voltage scales and peak voltage too.
If your output voltage isn't a perfect sine wave then things could be a little gppfy. George
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Today's Featured Article - Third Brush Generators - by Chris Pratt. While I love straightening sheet metal, cleaning, and painting old tractors, I use every excuse to avoid working on the on the electrics. I find the whole process sheer mystery. I have picked up and attempted to read every auto and farm electrics book with no improvement in the situation. They all seem to start with a chapter entitled "Theory of Electricity". After a few paragraphs I usually close the book and go back to banging out dents. A good friend and I were recently discussing our tractor electrical systems when he stated "I figure it all comes back to applying Ohms Law". At this point
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