| 摘要 |
A power harvesting circuit includes a first switch connected in series between an AC source and a load, a switch control circuit connected to the switch and operable to cause the switch to cycle AC power to the load, and a power collection circuit for collecting power resulting from the power cycling. A method of power harvesting includes cycling AC power to a load using a switch, and collecting power generated by the power cycling and providing the collected power for use by a load control circuit. An active controller includes a load control circuit, and a power harvesting circuit having first switch connected in series between an AC source and a load, a switch control circuit connected to the switch and operable to cause the switch to cycle AC power to the load, and a power collection circuit for collecting power resulting from the power cycling. |
