For the PDF version of this article, click here. In 1776, Scottish economist Adam Smith introduced the concept of division of labor and specialization, concluding that it is in the economic interest ...

The project has been designed to measure and graph various aspects of AC power in real time while acting as a computer-controlled remote switch. The project has been designed to measure and graph ...

Power monitoring is undertaken for a variety of reasons: to determine the cause of a power-related problem, to confirm that the supply can support added loads, to gather data that might aid in ...

If you want to measure voltage you reach for a voltmeter. Current? An ammeter. Resistance? An ohmmeter. But what about measuring AC power? A watt meter? Usually. But if you know what to do, you could ...

Howdy guys - I have an XPA-2 amp hooked up to a pair of B&W683's and am curious how many watts (in real time) I am using. I am not worried about over driving the speakers or worried that the amp is ...

Normally, when you want a low DC voltage from the AC line, you think about using a transformer of some kind. [RCD66] noticed that an AC monitor meter must have some sort of power supply but had no ...