"Phase converters add another layer of complexity to any facility," writes Michael Baldauf in this Tech Tips article.

This circuit uses a P-FET – to turn the power on, open the FET by bringing the GATE signal down to ground level ... you can imagine the gate as a capacitor. To sum it up, a FET is a transistor ...

Regional general assignment reporter covering a range of topics including race, politics, history, crime and culture. Joe Heim has been with The Washington Post as an editor and reporter since ...