Watching television or listening to the radio may be interfered by various sources noise.
Aircraft noise is extremely loud and researchers succeeded to reduce a few notches on noise meter. Railway noise also causes disturbances to local residents. In addition noise may come from traffics or viewers of television may start talking suddenly. Viewers of television may sit in a noise insulated room. Noise of that room may increase due to sudden opening of door. Automatic volume control will help user in understanding programs of television in all mentioned noisy situations. When user-defined volume high level is smaller than volume level required avoiding noise, user may feel further obstruction. While one or more viewers of television/ listeners of radio are talking or making noise volume will raise. Listeners will be warned about their noise through raise of volume automatically.
The above treatment is a very nice write-up on the subject of Automatic Volume
Control. The question, however, inquires regarding Automatic Gain Control (AGC).
AGC is implemented in a feedback loop inside any device where amplification takes
place, usually a radio receiver, video, or audio amplifier
, where portions of the circuit
work best only within some narrow range of signal level. When sub-circuits like that
are present, the signal level input to them is kept constant by preceding circuits
that sense the signal level, and adjust their gain appropriately so that their output
level ... and the input level to the following stages ... is held steady.
Often, the extent to which these control circuits are reducing their gain is brought
out to a single measuring point, and the voltage at that point is the source of all
the information available to indicate the strength of the signal arriving at the antenna.
The disadvantage of automatic gain control, attenuating even the weak signal, is overcome by the use of delayed automatic gain control (dagc).
Will this AGC controls the gain of an equipment gradually when input amplitude signal increases
we use resistors in an electric circuit to describe how a wire works and to control the flow of electricity
It's a buffer circuit - it provides a high impedance input, and low impedance output with ~ unity gain. If you have a circuit that cannot drive much power, you can use a voltage follower to help. Also, if the input or output of a circuit needs to stay a specific value, such as with filters, you can easily control this due to the isolation the voltage follower provides.
It is proper "control sense" to fuse the control circuit. It does not have to be just a cartridge fuse, in many cases it is a breaker. Depending on where the control voltage is obtained from, transformer from the incoming motor feed, separate source, or line voltage, there is always a chance that a component of the control circuit could fail, circuit protection would lessen the damage to other equipment in the control circuit. The fuse should be sized as close to the control current as possible.
To adjust/control/set voltages and/or restrict current.
Yes, use a ladder diagram.
Manual control means that it is controlled by humans, and automatic is it will work on its own. An example is a car's transmission. With manual transmission, you have to tell the car what gear to use. With automatic transmission, the car figures out what gear to use on its own by monitering factors such as RPM.
the depo makes you gain wait but its a shot
Use Automatic Updates in Control Panel Visit the Microsoft web site to install automatic updates