| 摘要 |
<p>A power switching circuit is provided to turn on/off an electric lamp by generating an operation voltage with a minute current flowing to the electric lamp, without performing an additional wiring work to supply an AC voltage. In a power switching circuit, a minute current flows in a load when the power switching circuit is turned off. A switch instructs on/off of the load. A control part controls on/off of the load by generating a switching control signal according to an on/off command of the switch. A voltage generation part(300) and a switching part(310) supply an operation voltage to the control part by generating a DC voltage with the minute current flowing in the load, and turn on/off the load according to the control of the control part.</p> |
