Audio AGC amplifier

Details Audio AGC amplifier Audio AGC amplifier

1975-09-08

1976-11-09

Claffy, Kathleen H.

Amplifiers

Signal feedback

Combined with control of bias voltage of signal amplifier

330 29, H03G 330

Patent

active

039912728

ABSTRACT:
An automatic gain control circuit for limiting the acoustical power to the receiver portion of a telephone operator's headset. The circuit provides means whereby the maximum level of acoustic energy output a telephone operator is subjected to is controlled to levels well below those where damage to the ear can occur. Features of the invention include the use of diodes in the feedback path of the an amplifier whereby DC currents control the conductivity of the diodes to control the amplifier gain, and a pair of such circuits in phase opposition serve to cancel control current effects on the signal path.

REFERENCES:
patent: 3398381 (1968-08-01), Torick et al.
patent: 3624491 (1971-11-01), Fidi et al.
patent: 3805177 (1974-04-01), Risley
patent: 3921091 (1975-11-01), Van Kessel et al.

Affiliated with

Also associated with

Rating

Audio AGC amplifier does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1726758