Zero voltage switch

Details Zero voltage switch Zero voltage switch

1981-10-07

1984-03-06

Zazworsky, John

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307252B, 307354, H03K 1772, H03K 1713, H03K 5153

Patent

active

044356510

ABSTRACT:
A zero voltage switch comprises two parallel connected current branches for taking over the D.C. current from a D.C. current source in half cycles of an A.C. voltage and a third current branch for blocking the other two current branches in zero axis crossing phases of the A.C. voltage so as to produce control pulses, a logic unit being provided for controlling the D.C. current source whereby an extremely small current is provided up to the beginning of a first control pulse, an increased current is provided during the control pulses and an intermediate current is provided between the control pulses.

REFERENCES:
patent: 3925688 (1975-12-01), Kalfus
patent: 4132909 (1979-01-01), Nutz

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