Proximity switch
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United States of America Patent
Stats
-
May 4, 1982
Grant Date -
N/A
app pub date -
Sep 18, 1979
filing date -
Dec 28, 1978
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A proximity switch with two connecting wires for switching an alternating current is described. The switch comprises a rectifying circuit, a thyristor connected across the output terminals of the rectifying circuit, a stabilized power circuit connected across the output terminals for supplying a d.c. power to a detection circuit. The thyristor is provided with a triggering circuit which is connected between the anode and gate terminals of the thyristor and consists of a transistor and a Zener diode connected in series.
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