Extended range amplifier circuit

Details Extended range amplifier circuit Extended range amplifier circuit

1984-11-06

1986-04-15

Mullins, James B.

Amplifiers

With semiconductor amplifying device

Including particular biasing arrangement

330110, 307300, H03F 304, H03K 1700

Patent

active

045830517

ABSTRACT:
An output circuit amplifier has first and second stage amplifying transistors with an impedance circuit connected between the base of the first stage transistor and the collector-emitter circuit of the second stage transistor to draw current from the first stage transistor base, thereby keeping both transistors out of saturation. The impedance circuit establishes a voltage drop between the two transistors such that large output voltage swings are enabled at an output terminal connected to the second stage transistor. The collector-emitter circuit of the first stage transistor is connected directly to a positive voltage bus to avoid further saturation problems.

REFERENCES:
patent: 4109166 (1978-08-01), Clark, Jr. et al.

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