Electric indicator with return-to-zero feature and compensating

Details Electric indicator with return-to-zero feature and compensating Electric indicator with return-to-zero feature and compensating

1981-06-22

1985-01-08

Strecker, Gerard R.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

With electromagnetic field

G01R 120

Patent

active

044929200

ABSTRACT:
An air core meter movement having return-to-zero means. Permanent magnets mounted within the deflection coils provide a field which interacts with the rotor magnet to return the pointer to zero when no power is applied to the meter. A compensating coil is also included to counteract the effects of the permanent magnets when measurable signals are applied to the deflection coils.

REFERENCES:
patent: 3460038 (1969-08-01), Ziegler
patent: 3636447 (1972-01-01), Gelenius
patent: 4197494 (1980-04-01), Van De Werken

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