Choke coil for eliminating common mode noise and normal mode noi

Details Choke coil for eliminating common mode noise and normal mode noi Choke coil for eliminating common mode noise and normal mode noi

1994-10-06

1996-04-09

Kozma, Thomas J.

Inductor devices

Core forms casing

336212, 336215, 336233, H01F 1706, H01F 2730

Patent

active

055065597

ABSTRACT:
A common mode choke coil has a couple of coils, a magnetic frame in which the coils are encased, the magnetic frame forming closed magnetic circuits around the respective coils, and a magnetic core which pierces through the magnetic frame. The frame is made of an insulating magnetic material which has a relative magnetic permeability of more than one, preferably two through some scores. For example, a mixture of ferrite powder of Ni--Zn and resin is used as the material of the frame. The core is made of a material which has a relative magnetic permeability of preferably several thousands, such as ferrite and amorphous.

REFERENCES:
patent: 2015674 (1935-10-01), Hayes

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