| 摘要 |
PROBLEM TO BE SOLVED: To provide a DC switch capable of two-wire wiring in an indoor wiring of an embodiment in which a load and the DC switch are separated in remote positions. SOLUTION: The DC switch SW is equipped with a semiconductor switching element Q1 which is connected in series to a load L to the DC power source DC, a charging circuit CH which is connected in parallel to the semiconductor switching element, a charging part CE which is connected to the charging circuit and is charged at the time of switching off of the semiconductor switching element, a driving circuit DR which is energized by the charging part and turns on the semiconductor switching element, and an operating switch OP which controls action of the driving circuit to the semiconductor switching element. COPYRIGHT: (C)2011,JPO&INPIT |
