Combined differential and common mode choke for a power supply

Details Combined differential and common mode choke for a power supply Combined differential and common mode choke for a power supply

1990-09-04

1992-06-02

Stephan, Steven L.

Inductor devices

Core surrounding linear conductor

323250, 363 39, H01F 1706, G05F 1325

Patent

active

051190591

ABSTRACT:
A dual mold choke is provided to reduce both differential and common mode electromagnetic interference. Ferrite cores are placed around DC power bus bars providing an inductor limiting differential mode noise and creating a choke reducing common mode noise. The use of E-cores provides a simplified mechanical assembly while providing high levels of noise reduction. An air gap between the center legs of the cores prevents saturation of the choke.

REFERENCES:
patent: 3790860 (1974-02-01), Verdisco
patent: 4210858 (1980-07-01), Ford et al.
patent: 4292665 (1981-09-01), Hersom et al.
patent: 4760484 (1988-07-01), Walker
patent: 4803609 (1989-02-01), Gillett et al.
patent: 4885559 (1989-12-01), Nasano
patent: 4960392 (1990-10-01), Dickie
patent: 4972167 (1990-11-01), Fujioka
patent: 4980654 (1990-12-01), Moulton

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