Inductor and method for producing same

Details Inductor and method for producing same Inductor and method for producing same

1974-05-17

1976-07-06

Kozma, Thomas J.

Inductor devices

With permanent magnet

323 92, 336132, 336 15, H01F 2100

Patent

active

039684652

ABSTRACT:
There is provided a gap in a magnetic circuit of an iron core inductor, and a plurality of small size permanent magnet pieces are placed in the aforesaid gap, with the magnetizing directions thereof being provided in side-by-side relation. If the magnetizing direction of the permanent magnet pieces is opposed to that of a D.C. magnetic field which is produced in a magnetic circuit, yet in case D.C. and A.C. overlapping currents flow through the inductor, then the D.C. magnetic field produced in the magnetic circuit will be off-set thereby, providing a high inductance value, while eddy currents produced within the permanent magnet pieces due to the A.C. magnetic field will be reduced to a considerable amount, because the permanent magnet pieces are small in size, thus minimizing the heat to be produced in the permanent magnet pieces.

REFERENCES:
patent: 2854607 (1958-09-01), Niklas et al.
patent: 3209295 (1965-09-01), Baermann
patent: 3519918 (1970-07-01), Bruck
patent: 3671810 (1972-06-01), Barnes et al.

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