Current feedback - Voltage feedback, how do I see the difference? - Page 82 - diyAudio
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Old 21st May 2013, 09:25 AM   #811
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Join Date: Oct 2010
Location: Chigwell, Essex
Quote:
Originally Posted by Claude Abraham View Post
The error signal is In, the current entering/exiting the - input.
Further proof that you're wrong can be found on page 13 of the following lecture notes of Dr Tse where he says "to subtract voltage fro voltage, we should use series connection". In other words, since you have a series feedback connection at the input of a so-called "CFA", you are, in fact, subtracting a voltage from a voltage.

http://cktse.eie.polyu.edu.hk/eie304/Feedback.pdf
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