Proximity switch device

Details Proximity switch device Proximity switch device

1986-11-12

1988-07-26

Gellner, Michael L.

Electricity: electrical systems and devices

Control circuits for electromagnetic devices

For relays or solenoids

H01H 4712

Patent

active

047604905

ABSTRACT:
A proximity switch device adapted to provide a contactless switching function for an electric device, such as a radio mounted in a vehicle when approached by an object, such as a driver's hand including a floating capacitance detector and an amplified oscillator circuit for converting a change in floating capacitance into a change in frequency signal, a voltage fluctuation detecting circuit for detecting an approach of the object based upon said frequency signal, and a flip-flop switch for switching on and off the electric device whenever an output signal indicating the approach of the object is produced.

REFERENCES:
patent: 3575640 (1971-04-01), Ishikawa
patent: 3829850 (1974-08-01), Guetersloh
patent: 4352141 (1982-09-01), Kent

Affiliated with

Also associated with

Rating

Proximity switch device does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Proximity switch device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Proximity switch device will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-261485