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Closed-loop control sys: Gain decrease, bandwidth increase

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powersys

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sysgain

I read an article that compares the advantages and disadvantages of open-loop control and closed-loop control. It mentions that for closed-loop control, the gain will be reduced compared to open-loop, while the bandwidth of the closed-loop will increase. Would someone pls advise why? Is it something to do with GBW (gain-bandwidth) product.

Thanks.
 

Re: Closed-loop control sys: Gain decrease, bandwidth increa

powersys,
See h**p://www.analog.com/library/analogDialogue/archives/30-3/ask.html
Regards,
Kral
 

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