Amplifier circuit with multiple power supplies

Details Amplifier circuit with multiple power supplies Amplifier circuit with multiple power supplies

2006-09-28

2008-10-21

Pascal, Robert (Department: 2817)

Amplifiers

Modulator-demodulator-type amplifier

C330S251000

Reexamination Certificate

active

07439801

ABSTRACT:
An amplifier circuit that uses multiple power supplies includes a class D amplifier circuit, input bias generator and feedback network. By creating a voltage using the input bias generator at the non inverting terminal of the integrator, the inverting terminal of the integrator will follow the same voltage as the non inverting terminal. The offset voltage between the input signal DC bias and the input DC bias of the integrator will create an offset current flowing through the feedback resistors, thus resulting in the desired output DC bias.

REFERENCES:
patent: 6448851 (2002-09-01), McIntosh et al.
patent: 7076070 (2006-07-01), Pearce et al.

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