| 摘要 |
PURPOSE:To obtain a driving device without generations of mulfunctions, burning accidents and noises, by constituting the device of means to detect the actions of an operation end driven by a solenoid, a time lag fuse, a supply control part in zero cross switching system, etc. CONSTITUTION:A closed circuit is constituted of a rectifying circuit 5 formed by an AC power source 4 and diodes 6-9 and of an AC voltage control part 10 formed by photo thyristors 11 and 12 and further a triac 13. A seried circuit of the fusing contact output type time lag fuse 3 and the solenoid 1 is connected to the circuit 5, and in the neighborhood of the solenoid 1, the detection part 2 for actions of the operation end driven thereby is arranged. Besides, the zero cross detection part 15 constituted of a micro processor 16 and an alarm indicator 17 which are coupled to a time interval signal generating part 18 is connected to the closed circuit, and the output from the signal generating part 18 is applied on an NAND circuit connected to the photo thyristor 11. Thus, the solenoid 1 is turned on-off in zero cross switching system, and the confirmation for the operation end is facilitated. |
