Arrangement and method for accurately sensing voltage of a high-

Details Arrangement and method for accurately sensing voltage of a high- Arrangement and method for accurately sensing voltage of a high-

1991-09-18

1993-06-15

Beha, Jr., William H.

Electric power conversion systems

Current conversion

With condition responsive means to control the output...

323223, 323358, 323359, 324126, 320 32, G05F 1613

Patent

active

052204952

ABSTRACT:
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.

REFERENCES:
patent: 3440515 (1969-04-01), Swartz
patent: 3771043 (1973-11-01), Zulaski
patent: 3882373 (1975-05-01), Brenig
patent: 4002976 (1977-01-01), Zulaski
patent: 4262256 (1981-04-01), Blais et al.
patent: 4567540 (1986-01-01), Ruta
patent: 4571658 (1986-02-01), Ruta

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