Gain control circuit

Details Gain control circuit Gain control circuit

1977-08-30

1978-07-18

Mullins, James B.

Amplifiers

With semiconductor amplifying device

Including differential amplifier

330279, 330285, 330289, H03G 330

Patent

active

041018419

ABSTRACT:
Disclosed is a gain control circuit which comprises a gain control section including as its essential component a differential amplifier with which diodes or transistors arranged to act as diodes are connected as a load, and a control signal section including a logarithmic compression circuit and an exponential expansion circuit and providing a control signal for control of the gain of the gain control section. A temperature compensation circuit having a temperature dependence cancelling both the temperature dependence of the gain control section and that of the control signal section is provided in the bias circuit for the transistor in the last stage of the control signal section, so that the desired temperature compensation for the entire gain control circuit can be achieved at a single point.

REFERENCES:
patent: 3940708 (1976-02-01), Sumi et al.

Affiliated with

Also associated with

Rating

Gain control circuit does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Gain control circuit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Gain control circuit will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-341721