Acoustic noise reduction in power supply inductors

Details Acoustic noise reduction in power supply inductors Acoustic noise reduction in power supply inductors

2011-03-29

2011-03-29

Mai, Anh T (Department: 2832)

Inductor devices

With vibration control

C336S083000, C336S192000, C029S602100, C323S247000, C713S300000

Reexamination Certificate

active

07915987

ABSTRACT:
Embodiments of the present invention provide an apparatus that reduces an audible noise produced in a power supply. The apparatus includes: (1) a housing; (2) an inductor coil formed from a coil of wire enclosed in the housing; (3) a set of wires that are coupled from the inductor coil to the outside of the housing through corresponding apertures in the housing, comprising electrical leads for the inductor coil; and (4) a predetermined amount of adhesive in the apertures that bonds the wires to the housing to reduce an audible noise produced when the current through the inductor coil is cycled quickly.

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patent: 6590487 (2003-07-01), Uchiyama
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patent: 7551053 (2009-06-01), Yamashita et al.
patent: 2001/0016977 (2001-08-01), Moro et al.
patent: 2002/0158739 (2002-10-01), Shibata et al.
patent: 2004/0066265 (2004-04-01), Saito et al.
patent: 2006/0049907 (2006-03-01), Liu
patent: 2008/0012674 (2008-01-01), Sano et al.

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