How many times have you poked around a circuit with a digital multimeter (DMM), read an AC voltage value, then gone on your merry way? Ever wonder if your meter is giving you peak value, average value ...

I really wanted to title this piece ‘Of RMS and the Mean I sing’. But wise editorial heads have told me more than once that quirky titles don’t draw people in, and that such mock erudition will ...

A few months ago a personal computer trade magazine reviewed surge voltage protective power strips for home use. The article offered an explanation of what “120 volts RMS” power (what we typically ...