Relay control circuit

Details Relay control circuit Relay control circuit

1977-12-02

1979-05-08

Salce, Patrick R.

Electricity: electrical systems and devices

Safety and protection of systems and devices

Arc suppression at switching point

361 6, 361185, H02H 722

Patent

active

041539222

ABSTRACT:
A relay control circuit is disclosed in which a timer circuit is actuated by a reference clock pulse in synchronism with an AC voltage supplied by a commercial power supply. An output signal of the timer circuit causes current to flow in the coil of the relay thereby to close the contact of a relay. The invention further comprises a polarity-reversing device for reversing the polarity in accordance with the variations in the output signal of the timer circuit. The reference clock pulse is applied to the timer circuit through the polarity-reversing device.

REFERENCES:
patent: 3243656 (1966-03-01), Baude
patent: 3560796 (1971-02-01), Landis
patent: 3925688 (1975-12-01), Kalfus
patent: 4010386 (1977-03-01), Rossell

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