SWITCHING DRIVING CIRCUIT FOR PARALLEL-CONNECTED CIRCUIT SOLID STATE RELAY AND MAGNETIC RELAY

摘要

Parallel connection of switching the power supply to the load by switching drive circuit of the solid-state relays and magnetic relays is disclosed. The drive circuit utilizes a magnetic relay and solid state relay (SSR) as a switching element connected in parallel to the load and the power. The microcontroller are each in the magnetic relays and solid state relays being connected to a separate output stage, when the control signal for the power supply or cut off in response to the load applied thereto, the magnetic relay is always put in a state in which the solid state relay The turn-on or turn-off to ensure that, the second switching signal for the magnetic relays and the first switching signal for turning on or off a solid state relay turning on or off with a predetermined time difference and the solid state relay Each is programmed to provide a magnetic relay. The switching drive circuit may be configured by three commercial. Thus, it is possible to avoid damage and malfunction of devices by sequentially opening and closing the two switching elements in such a way to inject a magnetic solid state relay while the relay committed.