REDUNDANT SYSTEM POWER SUPPLIES OPTOELECTRONIC RELAY Russian patent published in 2021 - IPC H03K17/08 H03K17/732 

FIELD: electronic equipment.

SUBSTANCE: invention relates to electronic engineering and can be used in circuits where voltage switching to load is required with galvanic decoupling of common primary power supply from two output buses of device of each reserve in off state. Each reservation of reservation object contains optoelectronic power relay, in which in each voltage switching circuit power circuits of two optocouplers are series-connected. Initial current of the optocouplers' LEDs is provided by a signal for switching on the optoelectronic power relay and, at its end, by a current determined by the current former connected to the output of the optoelectronic power relay. Optoelectronic relay is switched off by shunting current of optocouplers by a pulsed signal with the help of an electronic switch. Reliability of deactivation of any reserve (channel) of the optoelectronic relay at any failure in any one of its redundancy is provided by duplicated circuits on two switching buses. Reliability of voltage supply of at least one reserve of load system in case of any failure in any one reserve is ensured by supplying, in accordance with diagnostic features of the system, a signal of switching on of any serviceable reserve.

EFFECT: technical result consists in improvement of reliability and life of optoelectronic power relay.

1 cl, 4 dwg