Wattmeter comprising a hall sensor and an A/D converter

Details Wattmeter comprising a hall sensor and an A/D converter Wattmeter comprising a hall sensor and an A/D converter

1987-07-15

1989-06-27

Eisenzopf, Reinhard J.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Plural inputs

324117H, 324103R, G01R 2108, G01R 102

Patent

active

048433110

ABSTRACT:
A wattmeter in which a Hall sensor is provided with a large number of Hall elements, whose voltages are individually tapped. The wattmeter circuit is further provided with an impulse-width modulator, the input voltage of this modulator being periodically reversed, with a feedback to compensate the disturbing voltages, and with a circuit for precision curvature compensation CMOS bandgap reference. The output of an embodiment of the wattmeter is adapted to the reading-off by a computer. A wattmeter can be realized on a semiconductor wafer.

REFERENCES:
patent: 4066960 (1978-01-01), Milkovic
patent: 4327416 (1982-04-01), Jerrim
patent: 4371837 (1983-02-01), Sieverin
patent: 4514685 (1985-04-01), Gilker
patent: 4639665 (1987-01-01), Gary

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