Amplifiers – With semiconductor amplifying device – Including class d amplifier
Reexamination Certificate
2009-06-12
2010-11-23
Pascal, Robert (Department: 2817)
Amplifiers
With semiconductor amplifying device
Including class d amplifier
C330S297000
Reexamination Certificate
active
07839215
ABSTRACT:
A method and apparatus for power conversion in a class D amplifier is provided. The power conversion is achieved using synchronous rectifiers in a regulated half bridge power supply, taking the sum of the positive and negative rails as feedback, in order facilitate energy transfer between positive and negative output rails. This minimizes the effects of off side charging and rail sag, as well as achieving good line regulation, while allowing use of very small, low value output capacitors.
REFERENCES:
patent: 5986895 (1999-11-01), Stewart et al.
patent: 6169681 (2001-01-01), Kemp et al.
patent: 2009/0102295 (2009-04-01), Petersen
Nguyen Hieu P
Pascal Robert
RGB Systems, Inc.
The Hecker Law Group, PLC
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