Electricity: measuring and testing – Impedance – admittance or other quantities representative of... – Lumped type parameters
Reexamination Certificate
2007-12-03
2010-02-16
Dole, Timothy J (Department: 2831)
Electricity: measuring and testing
Impedance, admittance or other quantities representative of...
Lumped type parameters
C324S656000, C324S679000
Reexamination Certificate
active
07663377
ABSTRACT:
Systems and methods are provided for sensing or measuring capacitive or inductive reactance or changes in reactance in which the sensed reactance is coupled with a known resistance in a sensor circuit and a start signal is provided to the sensor circuit, and a programmable delay line is used to generate a programmable delay signal. The outputs of the programmable delay and the sensor circuits are compared to ascertain which transitions first, and the programmable delay value is adjusted in successive approximation fashion to identify a programmable delay that best represents the delay time of the sensor circuit from which the sensed reactance value can be determined.
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Clingersmith James William
Kurkovskiy Igor
Royer Daniel
Wieth Hermann
Dole Timothy J
Fay Sharpe LLP
Pepperl & Fuchs, Inc.
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