Analog power amplifier

Details Analog power amplifier Analog power amplifier

1988-04-12

1989-09-12

Mottola, Steven

Amplifiers

With semiconductor amplifying device

Including push-pull amplifier

330255, 330264, H03F 326

Patent

active

048663980

ABSTRACT:
The power amplifier incorporates push-pull stages, output transistors providing controllable output currents and a bias circuit completely eliminating switching of the output transistors. No thermal compensation and no matching thereof, and no adjustments are necessary.
An input amplifier amplifies in input signal and has a pair of outputs. A pair of resistors is separately coupled in series with power supply outputs. A pair of output amplifiers each has a first and second inputs for amplifying a signal appearing thereacross, and an output, wherein the first inputs are separately coupled to the input amplifier outputs and the second inputs are separately coupled to the resistors. A pair of transistors each has a base, first and second electrodes, wherein the bases are separately coupled to the output amplifier outputs, the first electrodes are separately coupled to the resistors, and the second electrodes are coupled together for providing an output signal of the power amplifier.

REFERENCES:
patent: 4176323 (1979-11-01), Odell
patent: 4433303 (1984-02-01), Sasaki

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