feedback definition

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feedback definition

Post  sahar on Wed Nov 17, 2010 6:23 pm

*Feedback describes the situation when output from an event in the past will influence an occurrence or occurrences on the same event in the present or future.
When an event is part of a chain of cause-and-effect that forms a circuit or loop,then the event is said to "feedback" into itself.
*Feedback is a mecanism,process or signal that is looped back to control a system within itself such a loop is called a feedback loop.

There are twoo types of feedback
1-An in-phase feedback signal,where a positive-going wave on the input leads to a positive-going change on the output,will amplify the input signal leading to more modification.This is known as a positive feedback.
2-A feedback signal which is inverted,where a positive-going change on the input leads to a negative-going change on the output,will dampen the effect of the input signal, leading to less modification.This is known as negative feedback.

sahar

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Re: feedback definition

Post  Rasha Badran on Sun Nov 28, 2010 4:54 pm

Can you give us examples on the types of Feedback ?
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