Output filter having swinging inductor

Details Output filter having swinging inductor Output filter having swinging inductor

H - Electricity

02

M

321/75

H02M 7/217 (2006.01) H02M 1/14 (2006.01)

Patent

CA 1180756

OUTPUT FILTER HAVING SWINGING INDUCTOR Abstract of the Disclosure An output filter for a switched-mode power supply with a direct current output is disclosed. The output filter comprises at least two inductors connected in series. One inductor is a swinging inductor (or swinging choke) that exhibits a relatively high impedance at low current levels and a relatively low impedance at high current levels. The swinging inductor has a magnetic core characterized by a closed magnetic circuit with no air gaps. This results in reducing the critical current of the output filter to an even smaller level than does a swinging inductor of conventional construction. - i -

406719

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