Electric current detecting apparatus
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United States of America Patent
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Aug 31, 1993
Grant Date -
N/A
app pub date -
Jan 28, 1992
filing date -
Jan 29, 1991
priority date (Note) -
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status (Latency Note)
Importance
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.
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