| 摘要 |
PURPOSE: To provide a powder supply voltage feeder that performs a proper power supply by adopting an ordinary constituent something as a key switch, and making an efficient use of intrinsic mechanical operation delay time to this key switch. CONSTITUTION: A span of specified time being shorter than a mechanical operation delay time of up to the closing of a circuit to an ignition fixed contact 14 after making the circuit to an automatic combustion control fixed contact 1 3 of a moving contact 11 of an ignition switch 10 is used as a criterion, and thereby a judging circuit 100 judges whether it is a rightful operation of the ignition switch 10 or not on the basis of a supply of dc voltage of a battery B to the ignition fixed contact 14 after or before the elapse of this specified time. With this constitution, an constant voltage output of a constant voltage circuit 60 afterwards is maintained or prohibited by a main relay 50. |
