Hybrid electrical power controller

Details Hybrid electrical power controller Hybrid electrical power controller

1986-01-27

1987-11-03

Pellinen, A. D.

Electricity: electrical systems and devices

Safety and protection of systems and devices

Arc suppression at switching point

361 13, 361 6, 361 8, H01H 3359

Patent

active

047046520

ABSTRACT:
A hybrid electrical power controller is provided with a relay having a coil and a pair of mechanical contacts. A solid state switching device is electrically connected in parallel with the mechanical contacts and the parallel combination of that switching device and the contacts is connected between an input and an output terminal. A relay coil energizing circuit is included and means is provided for producing a signal representative of current flowing in the relay coil following deenergization of the relay coil. A solid state switching device control circuit responds to this signal and turns off the switching device when the signals fall below a predetermined magnitude.

REFERENCES:
patent: 3558910 (1971-01-01), Dale et al.
patent: 4392171 (1983-07-01), Kornrumpf
patent: 4420784 (1983-12-01), Chen et al.

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