Proximity switch

Details Proximity switch Proximity switch

1982-04-02

1983-03-29

Griffin, Donald A.

Electrical transmission or interconnection systems

Combined impedance and switch systems

Condition responsive switch

307116, H01H 4702, H01H 3500

Patent

active

043785042

ABSTRACT:
A high-frequency oscillation type proximity switch comprising a resonance circuit in which a detection coil is used as a pickup for sensing the approach of an object thereto and a resonance capacitor is disposed at a position very close to the detection coil so that the resistance of a cable connecting the resonance circuit to its associated oscillation circuit can be substantially ignored in the resonance circuit.

REFERENCES:
patent: 3801799 (1974-04-01), Atkins

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