Solid state switching circuit

Details Solid state switching circuit Solid state switching circuit

1977-03-15

1978-12-12

Zazworsky, John

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307252B, 307252UA, 307311, H03K 1772

Patent

active

041297911

ABSTRACT:
This invention relates to an improved solid state switching circuit for switching an A.C. load current fed from an A.C. power supply in response to values of input signal. The improvement is that, a pair of thyristors are provided in the circuit, for each to share the switching of positive and negative parts, respectively, of the load current to pass when the power supply voltage is near or at zero.
Thus each thyristor switches very exactly in response to the values of input signal and power supply voltage, without accidental turning-ons after removal of the input signal, which have been frequently observed.

REFERENCES:
patent: 3328606 (1967-06-01), Pinckaers
patent: 3723769 (1973-03-01), Collins
patent: 3917962 (1975-11-01), Pascente
patent: 3935482 (1976-01-01), Fox, Jr. et al.

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