Low voltage switch
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United States of America Patent
Stats
-
Jun 14, 1988
Grant Date -
N/A
app pub date -
Mar 23, 1987
filing date -
Mar 23, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
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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