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 ...

The RMS value of a time dependent voltage or current is based on the simple concept of equality of power dissipation; however, its theoretical calculation or instrument implementation may not be easy.

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 ...

Things you can do with an oscilloscope. Some measurements, like “peak to peak amplitude” are pretty straightforward. But when should you use “mean” and when should you use “RMS”? What exactly is RMS, ...

If you mostly deal with DC current, you might not think much of root mean square or RMS measurements. Sure, you’ve seen meters that have “true RMS” settings, but what does it mean? If you don’t know — ...

If you're becoming an audio geek, there's a lot of terminology thrown around among audiophiles that may be a bit hard to follow without added context. If you're new to how music is recorded, mixed, ...