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Whats the need of studying control system in electronics?

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basically any electronic circuit without a control system is ,in many places meaningless,whenever u want your output to be sensed with your input in order to stabilize the gain (in case of opamp) or for noise reduction to minimize error,u need a control mechanism to do dat for u,rather then u urself take the screw driver in ur hand and change the potentiometer :D
 

akhilpaulv said:
Whats the need of studying control system in electronics?
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Feedback is one of the basic principles applied in electronics.
Connected with the principle of feedback are the terms "feedback loop", "loop gain", "closed-loop gain", "stability", "stability margin".
The theory behind all these parameters is provided by studying control systems.
 
Nearly every analog circuit has a feedback loop in it. In designing an analog IC, my chip has upwards of twenty feedback loops. Controls theory is the study of feedback loops, and without understanding the theory you will have much difficulty building feedback loops that work (because making them work is not as trivial as it sounds).

Additionally, electronics are called on to control non-electronic things using feedback loops, so the task of "controlling" a device (such as a robot, a soldering iron, a washing machine, anti-lock brakes, etc...) often falls on the electrical engineer.
 

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