Amplifiers – With semiconductor amplifying device – Including class d amplifier
Reexamination Certificate
2007-10-16
2007-10-16
Choe, Henry (Department: 2817)
Amplifiers
With semiconductor amplifying device
Including class d amplifier
C330S20700P
Reexamination Certificate
active
11153658
ABSTRACT:
A class D-amplifier which amplifies an input signal applied to an signal input of said amplifier (21) to generate an amplified signal output by an signal output (28a,28b) of said amplifier comprising a comparator (23) which compares the applied input signal with a switch signal to generate a pulse width modulated signal; a driving unit (24) which amplifies the pulse width modulated signal to generate the amplified output signal; and a feedback circuit which generates the self oscillating switch signal for the comparator (23).
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European Search Report and Written Opinion dated Dec. 2004.
Barkaro Karl Stefan
Bokinge Bo
Johansson Carl-Mikael
Randahl Torbjorn Ivar
Wiesbauer Andreas
Choe Henry
Infineon - Technologies AG
Jenkins Wilson Taylor & Hunt, P.A.
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