Lester Holt signed off from NBC Nightly News on Friday night after anchoring the program for ten years. He will now be working full time at Dateline NBC.

Contrary to what folks sometimes think, that does not mean that the two modes of the motor/generator ... AC current changes direction (alternates) as it flows through a circuit. DC currents ...

Typically, engineers can choose between direct-current (DC) or alternating-current (AC) motors. Machine Design has covered the difference between basic types of motors in the past. The latest ...

Each hot wire's copper tip ultimately connects to its control switch at the circuit breaker ... such as solar panel inverters and AC/DC disconnects, or generator subpanels and transfer switches ...

A Revolutionary 98% Efficient Solar-Powered Battery System to Deliver Clean, Affordable, and Reliable AC Electricity. For the first time in history, AC can be generated directly using DC batteries ...