Bias circuit

Details Bias circuit Bias circuit

1977-02-14

1978-09-05

Mullins, James B.

Amplifiers

With semiconductor amplifying device

Including gain control means

330263, 330293, 330296, H03G 330

Patent

active

041123875

ABSTRACT:
A bias circuit comprises first and second cascade-connected transistors of the same conductivity type; series-connected diode means adapted to be forward biased by part of a drive current toward the first and second transistors; and means for applying a voltage across a series circuit of the diode means between the bases of the first and second transistors, emitter voltages of the first and second transistors being applied to a next stage class B push-pull circuit.

REFERENCES:
patent: 3573645 (1971-04-01), Wheatley
patent: 3714462 (1973-01-01), Blackmer
patent: 3942128 (1976-03-01), Seki et al.

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