G - Physics – 01 – R
Patent
G - Physics
01
R
G01R 15/00 (2006.01) G01R 15/14 (2006.01) G05F 1/613 (2006.01) H02H 1/06 (2006.01) H02J 7/04 (2006.01)
Patent
CA 2078452
An arrangement is provided for accurately sensing the source voltage of a high- impedance source while supplying a variable burden. A current-sensing element is connected in series with a load circuit across a high-impedance source. The load circuit includes a variable burden load. A shunt regulator is connected with the variable burden load and is arranged to operate so that the combination of the shunt regulator and the variable burden present a controlled, nearly constant burden to the high-impedance source. The source voltage of the high-impedance source is sensed via the voltage across the series current-sensing element. While the output voltage is directly proportional to the burden, the output current is essentially unaffected by small variations in the burden. Thus, the current through the series current-sensing element is utilized to accurately sense the voltage of the high-impedance alternating-current source while also supplying the variable burden load such as a battery, electrical circuitry, and a switch operator.
Osler Hoskin & Harcourt Llp
S. & C. Electric Company
LandOfFree
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