Low voltage switch

Details Low voltage switch Low voltage switch

1987-03-23

1988-06-14

Shoop, Jr., William M.

Electrical transmission or interconnection systems

Switching systems

Switch actuation

307115, 3071414, 307632, 179 65R, 361389, H01H 954

Patent

active

047514019

ABSTRACT:
A low voltage switch without moving elements, uses a triac power switching element in series with the AC load. A flip-flop circuit provides latching operation for On and Off functions. The triac is isolated from low-voltage actuating circuitry by an optoisolator which draws power from a step down transformer. The transformer also isolates the AC line from the manual switch circuits. A metal case is heat sink for the triac switching element. A threaded nipple, an integral portion of the casing, can be inserted through plug openings in standard electrical junction boxes to form a continuous heat flow path from the triac into the juncture box.

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