Static switch controller synchronized with a passage to zero of

Details Static switch controller synchronized with a passage to zero of Static switch controller synchronized with a passage to zero of

1974-08-15

1976-06-01

Pellinen, A. D.

Electricity: power supply or regulation systems

Remote sensing

307252UA, 323 22SC, 323 39, H03K 1756

Patent

active

039612350

ABSTRACT:
A static switch controller synchronized with a passage to zero of the supply voltage, and which is insensitive to spurious firing currents is disclosed. A static switch is controlled by a control circuit having output terminals and input terminals. An alternating rectified voltage is applied across the output terminals and a closing signal is applied across the input terminals. The control circuit comprises a thyristor and a blocking circuit which blocks the cathode of the thyristor when the rectified voltage exceeds a threshold value.

REFERENCES:
patent: 3447041 (1969-05-01), Sandstrom
patent: 3579096 (1971-05-01), Buchanan
patent: 3840784 (1974-10-01), Schauffele

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