Cross-coil type indicating instrument

Details Cross-coil type indicating instrument Cross-coil type indicating instrument

1986-08-22

1987-12-22

Yasich, Daniel M.

Thermal measuring and testing

Temperature measurement

By electrical or magnetic heat sensor

307309, 324144, G08C 530, H03K 1796

Patent

active

047150432

ABSTRACT:
A cross-coil type indicating instrument has a permanent magnet arranged in a plurality of coils that are wound mutually crossed and indicates the value corresponding to a physical quantity detected by a sensor through turning the permanent magnet by supplying to the coil the electrical signal that corresponds to the sensor output. Two of the plurality of coils are wound so as to generate respectively magnetic fields which have mutually opposite direction, and the currents supplied to the coil are independently controlled by first and second control circuit, wherein the first control circuit comprises a input circuit and a operating circuit for low temperature and the second circuit comprises a input circuit and a operating circuit for high temperatures.

REFERENCES:
patent: 3330158 (1967-07-01), Simonyan et al.
patent: 3624625 (1971-11-01), Stonestreet
patent: 3701136 (1972-10-01), Stevens et al.
patent: 3987318 (1976-10-01), Meijer
patent: 4095468 (1978-06-01), Sidor
patent: 4199696 (1980-04-01), Tanaka et al.

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