Common mode noise reduction using parasitic capacitance...

Details Common mode noise reduction using parasitic capacitance... Common mode noise reduction using parasitic capacitance...

2007-02-26

2009-10-13

Laxton, Gary L (Department: 2838)

Electricity: power supply or regulation systems

Output level responsive

Using a transformer or inductor as the final control device

C323S222000, C323S255000, C323S263000

Reexamination Certificate

active

07602159

ABSTRACT:
A negative capacitance is developed by configuring an inductor as two inversely or opposingly coupled windings having different numbers of turns and connecting a capacitance to a center tap between the two windings. The negative capacitance is developed on the side of the inductor having the winding with the greater number of turns. The negative capacitance so developed may advantageously be used to cancel any capacitance or parasitic capacitance desired for reducing power loss, increasing switching speed or reducing or eliminating common mode noise in a switched circuit such as a switched power converter

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patent: 7355870 (2008-04-01), Choi

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