Inductive proximity switch having switched capacitor for control

Details Inductive proximity switch having switched capacitor for control Inductive proximity switch having switched capacitor for control

1986-12-12

1988-03-15

Grimm, Siegfried H.

Oscillators

With device responsive to external physical condition

324207, 324236, 324327, 331117R, G01V 311, H03B 512

Patent

active

047315911

ABSTRACT:
An inductive proximity switch which consists of an oscillator with an externally controllable resonant circuit as well as of a switching amplifier controllable by the oscillator. It further has a feed or biasing circuit for the oscillator and the switching amplifier. Connected in parallel with the capacitor of the resonant circuit is a capacitor with an electronic switch, the electronic switch being responsive to the output of the switching amplifier. Thereby a simple switching hysteresis is obtained.

REFERENCES:
patent: 4543527 (1985-09-01), Schuchmann et al.

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