Circuit for monitoring contact between the resistance track and

Details Circuit for monitoring contact between the resistance track and Circuit for monitoring contact between the resistance track and

1992-04-09

1994-02-22

Wieder, Kenneth A.

Electricity: measuring and testing

Impedance, admittance or other quantities representative of...

Lumped type parameters

324691, G01R 2714

Patent

active

052891348

ABSTRACT:
A circuit for monitoring contact between the resistance track and the wiper of a potentiometer provides for an adjustable DC voltage which can be tapped from the wiper. An alternating voltage is applied to the wiper via a series connection of a resistor and a capacitor. The resistance is greater than the impedance formed by the capacitance of the capacitor plus one-fourth of the track resistance. Circuitry for rectifying the voltage connects to a junction point between the resistor and the capacitor.

REFERENCES:
patent: 2779918 (1957-01-01), Altieri et al.
patent: 3810008 (1974-05-01), Motoda et al.
patent: 4228394 (1980-10-01), Crosby
patent: 4264860 (1981-04-01), Thebault
patent: 4920939 (1990-05-01), Gale
patent: 4972816 (1990-11-01), Mausner
patent: 5079500 (1992-01-01), Oswald

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