Automatic level control circuit

Details Automatic level control circuit Automatic level control circuit

1978-07-11

1980-11-18

Mullins, James B.

Amplifiers

With semiconductor amplifying device

Including gain control means

330279, 330282, 330284, H03G 330

Patent

active

042348536

ABSTRACT:
An automatic level control circuit including a current controlled attenuator wherein the amount of attenuation is controlled by a control current, an amplifier for amplifying an output signal of the attenuator, a current rectifier for forming a DC current source in accordance with the amplitude of the output signal voltage from the amplifier, and a current shunt for absorbing an output current fed from the rectifier. The control current is produced as a difference between the current from the rectifier and the current absorbed by the shunt. When the current fed from the rectifier is larger than that absorbed by the shunt, the automatic level control circuit operates in a manner that, when its input signal is at low level, the circuit gain is large and, as the input signal level rises, the circuit gain drops.

REFERENCES:
patent: 3353103 (1967-11-01), Berry et al.
patent: 3560995 (1971-02-01), Zielinski et al.
patent: 3564438 (1971-02-01), Limberg
patent: 3579112 (1971-05-01), Harford
patent: 3649847 (1972-03-01), Limberg
patent: 3803505 (1974-04-01), Ishigaki et al.
patent: 3927381 (1975-12-01), Sato et al.
patent: 4053846 (1977-10-01), Acker

Affiliated with

Also associated with

Rating

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-600312