Electricity: measuring and testing – Impedance – admittance or other quantities representative of... – Lumped type parameters
Reexamination Certificate
2006-08-10
2009-06-23
Nguyen, Vincent Q (Department: 2831)
Electricity: measuring and testing
Impedance, admittance or other quantities representative of...
Lumped type parameters
C324S525000, C073S001880
Reexamination Certificate
active
07550981
ABSTRACT:
A circuit and method for determining the wiper resistance of a potentiometer that includes the step of electrically coupling a sense resistor having a substantially constant sense resistance to the potentiometer third terminal. The potentiometer is electrically energized, and a potentiometer voltage, which is a voltage potential between the potentiometer first and second terminals, is determined. The wiper position is determined based at least in part on the determined potentiometer voltage. The sense resistor is electrically coupled to a potential that causes a wiper current to flow through the wiper and sense resistor. A magnitude of the wiper current is determined, and the wiper resistance is determined based at least in part on the potentiometer resistance, the determined potentiometer position, the determined wiper current magnitude, and the sense resistance.
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EP Search Report for Application No. 07113842.4 mailed on Nov. 30, 2007.
Honeywell International , Inc.
Ingrassia Fisher & Lorenz P.C.
Nguyen Vincent Q
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