Temperature compensation system for Hall effect element

Details Temperature compensation system for Hall effect element Temperature compensation system for Hall effect element

1980-04-16

1982-04-27

Wise, Edward J.

Boots, shoes, and leggings

364557, 324117H, 324251, G01R 3306

Patent

active

043274161

ABSTRACT:
In a solid state current, power or energy meter having a Hall element magnetically coupled to line current, a system for compensating the Hall voltage for its dependence on temperature comprises a read only memory (ROM) containing experimentally obtained temperature compensation data. The temperature of the Hall element is measured by a thermistor to develop a temperature dependent voltage. In one embodiment, the Hall element voltage and temperature dependent voltage are digitalized and supplied to address the ROM to generate a temperature compensated Hall voltage. In a second embodiment, the ROM is addressed by only the temperature dependent voltage to generate a correction voltage that is added to the Hall element voltage for temperature compensation.

REFERENCES:
patent: 3635297 (1972-01-01), Salava
patent: 3886446 (1975-05-01), Laranov et al.
patent: 4099238 (1978-07-01), Suzuki
patent: 4161782 (1979-07-01), McCracken
patent: 4162531 (1979-07-01), Rode et al.
patent: 4198677 (1980-04-01), Brunner et al.
patent: 4217651 (1980-08-01), Pickering

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