Multicircuit control apparatus and control method therefor

Details Multicircuit control apparatus and control method therefor Multicircuit control apparatus and control method therefor

1992-10-21

1995-04-11

Stephan, Steven L.

Electrical transmission or interconnection systems

Plural supply circuits or sources

Substitute or emergency source

361 9, 361 13, 307134, G08B 2100

Patent

active

054061288

ABSTRACT:
In a multicircuit control apparatus (10) including a mechanical main contact (125) and plural semiconductor switching devices such as triacs (13a, --, 13d) each connected in series to the main contact, the main contact is closed by a control circuit 15 prior turning-on of any of the semiconductor switching devices and is also opened by the control circuit 15 after completion of turning-off of all the semiconductor devices.

REFERENCES:
patent: 4215277 (1980-07-01), Weiner et al.
patent: 4713716 (1987-12-01), Takemura et al.
patent: 4811010 (1989-03-01), Lucas
patent: 4859819 (1989-08-01), Weldon et al.
patent: 5053907 (1991-09-01), Nishi et al.
patent: 5136217 (1992-08-01), Hoffman

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