Systems and methods for measuring an RMS voltage

Details Systems and methods for measuring an RMS voltage Systems and methods for measuring an RMS voltage

2007-03-06

2007-03-06

Hirshfeld, Andrew H. (Department: 2858)

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

C327S348000, C702S198000

Reexamination Certificate

active

11189318

ABSTRACT:
An embodiment of a method for measuring an RMS voltage of an arbitrary time-varying waveform includes: a) coupling said arbitrary time-varying waveform to said thermally sensitive device; b) decoupling said arbitrary time-varying waveform from said thermally sensitive device; c) coupling said thermally sensitive device to said controlled DC voltage source; d) measuring a current through said thermally sensitive device at least two points in time; e) determining a change in said current over said at least two points in time; f) if said current is increasing between said at least two points in time, then decrease said controlled DC voltage source responsive to determining that said current is increasing; g) if said current is decreasing between said at least two points in time, then increase said controlled DC voltage source responsive to determining that said current is decreasing; and h) repeating steps a)–g).

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