Current detection device

Details Current detection device Current detection device

2007-04-19

2008-12-30

Nguyen, Tuyen T. (Department: 2832)

Inductor devices

With outer casing or housing

Reexamination Certificate

active

07471178

ABSTRACT:
The present invention provides a low-cost current detection device having a magnetic sensor easily placed on a choke coil, wherein assembly and manufacturing costs are reduced and a product is miniaturized. A current detection device including a choke coil for smoothing an input current or an output current and a magnetic sensor1abuilt into the choke coil to detect the input current or output current, wherein the choke coil is composed of: a pair of cores5provided with an outer magnetic leg5aconstituting a closed magnetic circuit and a center magnetic leg5bfor providing a gap; and an air core coil6mounted on the center magnetic leg5b, and space6bis provided to a part of winding of the air core coil6with the magnetic sensor1aplaced in the gap between the space6band the center magnetic leg5b.

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