Proximity switch with built-in test circuit

Details Proximity switch with built-in test circuit Proximity switch with built-in test circuit

1981-02-25

1984-02-21

Grimm, Siegfried H.

Oscillators

With device responsive to external physical condition

328 5, 340562, 331 44, G08B 1326

Patent

active

044333099

ABSTRACT:
An inductive proximity switch with a built-in testing circuit for monitoring movable elements in which an oscillator has an inductive control element, the impedance of which varies in response to approaching elements with a built-in electrical tester for monitoring the correct functioning of the proximity switch wherein the tester has an electrically switchable damping circuit for damping the oscillator for test purposes.

REFERENCES:
patent: 3747012 (1973-07-01), Buck
patent: 3829850 (1974-08-01), Guetersloh

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