Master and slave power supply control circuits

Details Master and slave power supply control circuits Master and slave power supply control circuits

1983-12-28

1985-05-28

Pellinen, A. D.

Electrical transmission or interconnection systems

Plural supply circuits or sources

Substitute or emergency source

307 85, 307 86, H02G 900

Patent

active

045202753

ABSTRACT:
A circuit for controlling the connection of master and slave power supplies to a load. In a preferred embodiment, identical circuits on two printed circuit boards are interconnected on the backplane to make one a master circuit and the other a slave circuit, controlled by the master. Means are included in the master and slave circuits for responding to undervoltage and overload conditions to switch the slave power supply on-line and the master supply off-line. Means are further provided to respond to an overload condition resulting from a failure in the master power supply itself by holding the master supply off-line. The circuit avoids disadvantages associated with prior art systems using isolation diodes.

REFERENCES:
patent: 4160917 (1979-07-01), Wald
patent: 4386308 (1983-05-01), Emile, Jr. et al.
patent: 4426587 (1984-01-01), Nouet

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