Current sensor with laminated magnetic core
A current sensor and magnetic core technology, applied in the direction of magnetic core/yoke, voltage/current isolation, transformer/inductor core, etc., can solve problems such as change, unresponsive magnetic induction, and air gap size change
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[0021] Referring to the drawings, the current sensor 2 includes a housing 4, a magnetic core 6, a magnetic field detector 8 and a mounting element 10.
[0022] The magnetic core is composed of a stack of sheets of high permeability materials known in the art. The magnetic core surrounds the opening 12 through which a main conductor 5 (not shown) through which the current to be measured flows. The magnetic core 6 has an air gap 14, which in the illustrated embodiment passes completely through the magnetic core. However, within the scope of the present invention, the air gap may also be a partial air gap, whereby the magnetic core forms a closed or substantially closed magnetic circuit. Depending on the intensity of the current to be measured, the height H of the stacked sheets constituting the magnetic core can be changed, such as Figure 2a with 2b Shown. For cost and weight reasons, it is advantageous to adjust the height of the magnetic core according to the application and t...
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