| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a load control system with an electronic switching device capable of being applied to an existing load control system using a mechanical switch part without increasing the number of connection terminals or wirings. <P>SOLUTION: This load control system includes: a load operation circuit which has a load and a power supply connected in series between a first terminal and a second terminal; the switching device connected between the first terminal and the second terminal; a switch control circuit which supplies a control signal to a control terminal of the switching device and control conduction/non-conduction of the switching device; a first power supply circuit which supplies a power to the switch control circuit from the first terminal if the switching device is in a non-conduction state; and a second power supply circuit which supplies a power supply to the switch control circuit from an output terminal of the switching device if the switching device is in a conduction state. <P>COPYRIGHT: (C)2007,JPO&INPIT |
