Electrical transmission or interconnection systems – Nonlinear reactor systems – Parametrons
Patent
1979-07-18
1982-04-13
Zazworsky, John
Electrical transmission or interconnection systems
Nonlinear reactor systems
Parametrons
307252B, 307252UA, H03K 1772
Patent
active
043249892
ABSTRACT:
Solid-state relay, including a full-wave rectifier bridge having a first and a second d-c terminal, a thyristor having the anode thereof connected to the first terminal and the cathode thereof connected to the second terminal, a first transistor having a load circuit and a control terminal, the load circuit of the first transistor being connected to the gate and the cathode of the thyristor and the control terminal of the first transistor being connected to at least one resistor which is in turn connected to the first terminal, a second transistor having means for supplying a control current thereto and having a load circuit, a Zener diode, and a current amplifier having an input and two input terminals, one input terminal being connected to the Zener diode which is in turn connected to the control terminal of the first transistor and the other input terminal being connected through the load circuit of the second transistor to the gate terminal of the thyristor, the current amplifier having an output and two output terminals, one output terminal being connected to the first terminal through a resistor and the other output terminal being connected to the first terminal.
REFERENCES:
patent: 3668422 (1972-06-01), Pascente
patent: 3723769 (1973-03-01), Collins
patent: 3881118 (1975-04-01), Forrest et al.
patent: 4158150 (1979-06-01), Dever
Lerner Herbert L.
Siemens Aktiengesellschaft
Zazworsky John
LandOfFree
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