Electric power conversion systems – Current conversion – With means to introduce or eliminate frequency components
Reexamination Certificate
2008-05-15
2011-12-13
Sterrett, Jeffrey (Department: 2838)
Electric power conversion systems
Current conversion
With means to introduce or eliminate frequency components
C363S039000
Reexamination Certificate
active
08077489
ABSTRACT:
A switch-mode power converter comprises a converter circuit and an auxiliary switching circuit. The converter circuit comprises a storage component configured to temporarily store input energy; and at least one switch configured to control release of the stored energy from the storage component. The auxiliary switching circuit is coupled to the storage component, the auxiliary switching circuit comprising an auxiliary switch having a duty cycle that is approximately 180 degrees out of phase with the duty cycle of the at least one switch in the converter circuit such that the auxiliary switching circuit produces compensating noise which substantially cancels noise radiated from the converter circuit.
REFERENCES:
patent: 2043416 (1936-06-01), Lueg
patent: 2776020 (1957-01-01), Conover et al.
patent: 2978577 (1961-04-01), Ketchledge
patent: 4025724 (1977-05-01), Davidson, Jr. et al.
patent: 4473906 (1984-09-01), Warnaka et al.
patent: 4584714 (1986-04-01), Fukuhara
patent: 4947435 (1990-08-01), Taylor
patent: 4979218 (1990-12-01), Strahm
patent: 5018202 (1991-05-01), Takahashi et al.
patent: 5170433 (1992-12-01), Elliott et al.
patent: 5315185 (1994-05-01), Usimaru
patent: 5363451 (1994-11-01), Martinez et al.
patent: 5388160 (1995-02-01), Hashimoto et al.
patent: 5394376 (1995-02-01), Riddle et al.
patent: H1445 (1995-06-01), Culbreath et al.
patent: 5499301 (1996-03-01), Sudo et al.
patent: 5539832 (1996-07-01), Weinstein et al.
patent: 5947051 (1999-09-01), Geiger
patent: 6341101 (2002-01-01), Dutton et al.
patent: 6477066 (2002-11-01), L'Hermite
patent: 6654467 (2003-11-01), York et al.
patent: 6850423 (2005-02-01), Lanni
patent: 6879500 (2005-04-01), Liu et al.
patent: 7139401 (2006-11-01), Culman et al.
patent: 7593241 (2009-09-01), Kwon et al.
patent: 2005/0144632 (2005-06-01), Mears et al.
patent: 2005/0234715 (2005-10-01), Ozawa
patent: 2006/0038550 (2006-02-01), Nazarian
patent: 2006/0152203 (2006-07-01), Perry et al.
patent: 2007/0103949 (2007-05-01), Tsuruya
Fogg & Powers LLC
Lockheed Martin Corporation
Nash Gary
Sterrett Jeffrey
LandOfFree
System and method of cancelling noise radiated from a... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with System and method of cancelling noise radiated from a..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and System and method of cancelling noise radiated from a... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4254447