Latching relay control circuit

Details Latching relay control circuit Latching relay control circuit

1993-01-22

1995-07-04

Gaffin, Jeffrey A.

Electricity: electrical systems and devices

Control circuits for electromagnetic devices

Systems for magnetizing, demagnetizing, or controlling the...

361172, 307141, H01H 4732

Patent

active

054306000

ABSTRACT:
A latching relay control circuit comprising a latching relay pulse generator circuit and a relay coil drive circuit, the latching relay pulse generator circuit receiving relay control signals and relay reset signals. When a relay control signal changes states, the latching relay pulse generator provides a pulsed signal to the relay and coil drive circuit, the relay and coil drive circuit then changing the state of a latching relay. The relay reset signal is provided during power-up or just before power is lost to the system, the relay reset signal being provided to the latching relay pulse generator circuit wherein the latching relay pulse generator circuit provides a reset signal to the relay and coil driver circuit, and the relay and coil driver circuit opens all of the latching relays it controls.

REFERENCES:
patent: 4408251 (1983-10-01), Kaplan
patent: 4631627 (1986-12-01), Morgan
patent: 4907122 (1990-03-01), Tamura
patent: 5196730 (1993-03-01), Matsuo

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