Potentiometer circuit providing identifiable open wiper signals

Details Potentiometer circuit providing identifiable open wiper signals Potentiometer circuit providing identifiable open wiper signals

1994-01-24

1996-12-31

Regan, Maura K.

Electricity: measuring and testing

Impedance, admittance or other quantities representative of...

Lumped type parameters

34087038, 7317009, G01R 2708

Patent

active

055897797

ABSTRACT:
A circuit is provided for generating a voltage signal corresponding to a wiper position in a linear or circular potentiometer having an open wiper position or an open wiper angle, respectively. The voltage signal circuit includes provisions for determining when a wiper is in an open wiper position or angle region. When the circuit is used with a freely rotating circular potentiometer, the voltage signal may be used to determine wind direction. The circuit includes a voltage source coupled to a conducting element and a wiper. A pulling resistor driven by an operational amplifier is coupled to the wiper and voltage source to provide an identifiable voltage signal corresponding to the open wiper state during rotation through the open wiper angle region.

REFERENCES:
patent: 1601766 (1926-10-01), Peter
patent: 3727457 (1973-04-01), Gregory
patent: 3812712 (1974-05-01), Hoffman
patent: 3827037 (1974-07-01), Willoughby
patent: 4803420 (1989-02-01), Steinbrecher

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