Circuit Design: Automatic Gain Control

VTX 1000 W/OUT EXTENDED MICS INCLUDES SUBWOOFER - Model#: 2200-07500-001 by POLYCOM, INC. $960.00. SoundStation VTX 1000 Conference Phone (Includes Subwoofer - Fully Automatic Conference Phone Featuring VTX Wide Band Voice and Automatic Gain Control - Requires Extended Mics)

it is often used in circuits where transistor is used as a switch. However, one application of fixed bias is to achieve crude automatic gain control in the transistor by feeding the base resistor from a DC signal derived from the AC output of a later stage.

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Automatic Gain Control PreAmplifier Circuit Diagram The preamp circuit uses an easily obtained 741 op amp set for an internal gain about 200.

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Jason Levine teaches how to animate Lower Thirds in Photoshop for Premiere and After Effects CS4

Delayed Automatic Gain Control

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Midland 75-785 40-Channel CB Radio by Midland. $43.95. Amazon.com                 This CB radio comes with seven watts of input and four watts of output (the FCC maximum allowable), and is a sleek and slim handheld that's 33% smaller than its predecessor. Highlights include automatic noise control, automatic gain control, a bright LED display, high/low power switch, and plenty more. With battery saving circuitry, this mobile radio can operate on 9 AA batteries or...

Midland 75-785 40-Channel CB Radio by Midland. $43.95. Amazon.com This CB radio comes with seven watts of input and four watts of output (the FCC maximum allowable), and is a sleek and slim handheld that's 33% smaller than its predecessor. Highlights include automatic noise control, automatic gain control, a bright LED display, high/low power switch, and plenty more. With battery saving circuitry, this mobile radio can operate on 9 AA batteries or...

Adafruit Stereo 2.8W Class D Audio Amplifier - I2C Control AGC - A mini class D with AGC and I2C control? Yes please! Able to deliver 2 x 2.8W channels into 4 ohm impedance speakers (@ 10% THD) it has an i2c control interface as well as an AGC (automatic gain control) system to keep your audio from clipping or distorting.

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