You almost never hear of a DC Watt Meter – one just does some mental math with Volts and Amps at the back of one’s head. An AC Watt Meter, on the other hand, can by pretty useful on any workbench.

Growing up, one of my father’s catchphrases was, “Turn off the lights when you leave a room; we’re not made of money!” I rolled my eyes back then, but I get it now. Like many, my electric bill has ...

Measuring your PC's power consumption is crucial for understanding your energy costs and optimizing your system's efficiency. Here are several methods to accurately determine how much power your PC ...

Watt meters like the Kill A Watt ($25) and Watts Up ($96) are designed to help you measure how much electricity appliances, electronic equipment, and other devices around your house use during active ...

The watt hour meter measures the total energy supplied from the mains supply. For experimental convenience it is replaced by an indicating watt meter that indicates the instantaneous rate of energy ...