Electric current detecting apparatus

Details Electric current detecting apparatus Electric current detecting apparatus

1992-01-28

1993-08-31

Karlsen, Ernest F.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Magnetic saturation

324127, G01R 1900, G01R 3306

Patent

active

052412636

ABSTRACT:
An electric current detecting apparatus having gaps in a looped core and a primary winding and a secondary winding around the looped core. The gaps have continuous portions in the looped core. A magnetoelectric transducer such as a Hall effect element is inserted into at least one of the gaps. The gaps and the secondary windings have the same dimension as well as the same shape and are symmetrically arranged to reduce damping oscillation and transient spike noise of the secondary current I2. The continuous portion prevents increase of magnetic reluctance of the core. The electric current detecting apparatus has good high frequency response characteristics and detects a large current of a square wave pulse at a high speed and with high fidelity.

REFERENCES:
patent: 2928048 (1960-03-01), Postal
patent: 3323056 (1967-05-01), Haley
patent: 3323057 (1967-05-01), Haley
patent: 4639665 (1987-01-01), Gary
patent: 4791361 (1988-12-01), Beifoff et al.
patent: 4841235 (1989-06-01), Hastings et al.
Patent Abstracts of Japan Application No. 61-225661, P-551, Feb. 25, 1987, vol. 11, No. 62.

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