Current sensors

Details Current sensors Current sensors

1982-04-12

1985-01-08

Karlsen, Ernest F.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

With coupling means

323357, G01R 120, H01F 4006

Patent

active

044929196

ABSTRACT:
A sensor for measuring large magnitudes of A.C. current utilizes a conductive member having a higher-resistance element parallelled by a pair of elements with lower, and substantially equal, resistance and so arranged as to cause cancellation of magnetic field effects upon the higher-resistance element due to a flow of current through the lower-resistance elements. Thermal-effect compensation of the higher-resistance element of the sensor is also disclosed. Active load termination of a current-sensing transformer, positioned about the higher-resistance element, is used.

REFERENCES:
patent: 2915707 (1959-12-01), Bradstock et al.
patent: 3815012 (1974-06-01), Milkovic
patent: 4182982 (1980-01-01), Wolf et al.

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