Current feedback - Voltage feedback, how do I see the difference? - Page 30 - diyAudio
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Old 10th July 2004, 12:47 AM   #291
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Either we can call it an CFB amplifier when the feedback sense a current "information" over a shunt resistor OR when the feedback input node sees a "current signal" becausem of a transimpedance stage, OR why not both....?

The first case could be called "current shunt feedback"
and the second case could be called "current transimpedance feedback", eg. two type of CFB with distinguished difference in their naiming.

Just a proposal.

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Old 10th July 2004, 10:14 AM   #292
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When I point to a red flower and call that a “red flower” nobody has a problem with that whether it is a tulip or a poppy. When I point to a blue flower nobody etc. etc. But on this board obviously there will be a lengthy discussion about what kind of red and what kind of blue and how we shall define red and blue.

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Old 10th July 2004, 01:02 PM   #293
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....ever talked to a painter, Pjotr? (NOT a house painter).

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Old 10th July 2004, 01:50 PM   #294
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Actually Jan, a good friend of mine is such a painter and was teached by Melle And yes he knows the difference between cobalt blue and titanium blue, but that both are a kind of blue is no discussion.

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Old 10th July 2004, 02:37 PM   #295
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....just as we agree that CFB, VFB, seriesFB, shuntFB etc are all some kind of feedback.

Jan
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Old 10th July 2004, 03:27 PM   #296
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Quote:
Originally posted by janneman
....just as we agree that CFB, VFB, seriesFB, shuntFB etc are all some kind of feedback.

Jan

what titianium blue? it is black red.

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Old 11th July 2004, 06:37 AM   #297
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Quote:
Originally posted by Christer


I am not defending the use of the term as the op amp manufacturers
use it, but I have accepted it since it is most probably there to stay
and nobody has so far come up with any generally accepted
alternative (even mikeks finally seemed to accept that it is at
least "a special breed of VFB", so we need a term for it).

'Current feedback'=Low impedance voltage feedback

viz:

LIV feedback
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Old 11th July 2004, 02:15 PM   #298
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Quote:
Originally posted by mikeks
LIV feedback

why don't we just call them "electron feedback"? afterall, whatever happens, the electrons are sent back and they certainly don't know in what forms they are sent back for. Right?

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Old 11th July 2004, 03:21 PM   #299
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Quote:
Originally posted by mikeks



'Current feedback'=Low impedance voltage feedback

viz:

LIV feedback

Hmm.. isn't it a bit wrong "nuance" in that "colour"...or should I write "color"?!
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Old 11th July 2004, 03:27 PM   #300
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Quote:
Originally posted by mikeks


But 'current feedback' cannot be that name, as this has always been used to describe a system in which the feedback networks nominal (required) transfer function is a current....
Of course it can, as I have explained several times. What you
have trouble with is not an engineering terminology problem
but a philosophical problem, but you fail to recognize it as such.
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