Electronic amplifier circuit arrangements

Details Electronic amplifier circuit arrangements Electronic amplifier circuit arrangements

1979-03-29

1981-06-23

Mullins, James B.

Amplifiers

With semiconductor amplifying device

Including push-pull amplifier

H03F 326

Patent

active

042753600

ABSTRACT:
A push-pull amplifier arrangement for driving a radio transmitter is shown. It comprises two high power transistors connected in push-pull through the primary winding of an output transformer. The base-emitter circuit of each transistor has a separate and independent input drive circuit each comprising a respective frequency-dependent impedance circuit and a respective transformer. The transistors are biased to operate in Class AB. The use of completely independent drive circuits reduces distortion and this effect is assisted by the frequency-dependent impedance circuits.

REFERENCES:
patent: 2808469 (1957-10-01), Crow et al.
patent: 3388337 (1968-06-01), Lee et al.
patent: 3652947 (1972-03-01), Hollingsworth
patent: 3652948 (1972-03-01), Fierstien et al.

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