The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 22, 1994
Filed:
Apr. 09, 1992
Applicant:
Inventor:
Rainer Kohr, Oberbillig, DE;
Assignee:
VDO Adolf Schindling AG, Frankfurt am Main, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01R / ;
U.S. Cl.
CPC ...
324714 ; 324691 ;
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.