DC or AC solid state switch with improved line-derived control c

Details DC or AC solid state switch with improved line-derived control c DC or AC solid state switch with improved line-derived control c

1986-06-02

1987-03-10

Beha, Jr., William H.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307571, 307311, 323351, H03K 17687

Patent

active

046493026

ABSTRACT:
A solid state switch (SS) for controlling a load (1) supplied from either an alternating current (AC) or a direct current (DC) power supply line (L1, L2) having a pair of solid state devices (FET1, FET2) for controlling energization of the load and a common control circuit (CC) therefore which includes a diode isolated, capacitive-reactively coupled, line-derived power supply circuit (PSC) for the common control circuit and an opto-isolated logic signal input circuit (ISO) such power supply circuit effectively eliminating the need for transformers or the line.

REFERENCES:
patent: 3723769 (1973-03-01), Collins
patent: 3881118 (1975-04-01), Forrest et al.
patent: 4438356 (1984-03-01), Fleisher
patent: 4500802 (1985-02-01), Janutka
patent: 4528494 (1985-07-01), Bloomer
patent: 4567425 (1986-01-01), Bloomer

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