Class-D amplifier

Details Class-D amplifier Class-D amplifier

2007-01-23

2007-01-23

Nguyen, Khanh Van (Department: 2817)

Amplifiers

Miscellaneous

Amplifier protection means

C330S251000

Reexamination Certificate

active

10998134

ABSTRACT:
A class-D amplifier includes: an operational amplifier and capacitors, which constitute an integrator for integrating a difference between a plus-sided input signal and a minus-sided input signal which constitute analog input signals; delay circuits for delaying a phase of a triangular wave by a desirable very small angle; resistors, which constitute a synthesizing circuit for synthesizing an output of the integrator, the triangular wave, and outputs of the delay circuits with each other; comparators for comparing outputs of the synthesizing circuit with each other; AND circuits which constitute a buffer for inputting outputs of the comparators; and resistors feeding back an output of the buffer to an input side of the integrator.

REFERENCES:
patent: 5617058 (1997-04-01), Adrian et al.
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patent: 6614297 (2003-09-01), Score et al.
patent: 6707337 (2004-03-01), Noro
patent: 6794932 (2004-09-01), Butler
patent: 56-27001 (1981-03-01), None
patent: 07-163153 (1995-06-01), None
patent: 2000-500625 (2000-01-01), None
Chang Soo Kil, “Notification of Submission of Opinions, ” Patent Office (Japan), p. all, (May 24, 2006).

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