Audio signal amplifier circuit and electronic apparatus...

Details Audio signal amplifier circuit and electronic apparatus... Audio signal amplifier circuit and electronic apparatus...

2005-11-29

2005-11-29

Nguyen, John B (Department: 2819)

Amplifiers

With semiconductor amplifying device

Including differential amplifier

C330S264000, C330S265000

Reexamination Certificate

active

06970044

ABSTRACT:
The present invention is provided with a first, a second and a third differential amplifier which operate at a source voltage with respect to a reference voltage or a voltage between these; an output stage having a first and a second transistor driven complimentarily; a first resistor connected to an input terminal; a second resistor connected to an output of the first differential amplifier circuit; and a first and a second feed back resistor connected to an output terminal of the output stage circuit.

REFERENCES:
patent: 4995113 (1991-02-01), Robineau et al.
patent: 5095282 (1992-03-01), Dayton
patent: 6268770 (2001-07-01), Barbetta
patent: 5-308228 (1993-11-01), None
patent: 9-46146 (1997-02-01), None
patent: 11-103216 (1999-04-01), None

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