Circuit for increasing voltage gain

Details Circuit for increasing voltage gain Circuit for increasing voltage gain

1984-07-12

1985-12-24

Mullins, James B.

Amplifiers

With semiconductor amplifying device

Including gain control means

330 86, 330293, H03G 330, H03F 134

Patent

active

045609489

ABSTRACT:
An operational amplifier having an input stage, a voltage gain stage, a current gain or buffer stage and a feedback connected between the output of the buffer stage for supplying to the voltage gain stage a current which varies in proportion to the voltage gain stage output to increase the output impedance of the voltage gain stage.

REFERENCES:
patent: 3988694 (1976-10-01), Yamazaki
patent: 4267518 (1981-05-01), Davis
patent: 4393355 (1983-07-01), Davis et al.

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