While looking around for info relating to a post here, I found the following articles (By Bruno Putzeys of Hypex fame) on the EDN site.
A detailed and technical discussion of how negative feedback works and how important it is for audio fidelity (when properly implemented)
Part 2
Where he covers the audiophile controversy surrounding NFB, and outlines his thinking about how it arose. Particularly useful to counter some of the NFB misinformation floating around out there.
I found them incredibly useful as a retired (very much non audio) electronic engineer - though I'd need to spend more time to refresh my knowledge of the control theory maths to fully get to grips with it all.
If, like me, the detailed maths side needs more work to follow, there are plenty of words to explain what is going on - so you can still follow the reasoning. Though if this is the case I'd strongly advise against anyone of the "NFB is evil" mindset attempting to counter the information with unfounded verbiage.
(The articles are not new - it is possible they've been linked here before. Apologies if so)
Negative feedback in audio amplifiers: Why there is no such thing as too much
A detailed and technical discussion of how negative feedback works and how important it is for audio fidelity (when properly implemented)
Part 2
Where he covers the audiophile controversy surrounding NFB, and outlines his thinking about how it arose. Particularly useful to counter some of the NFB misinformation floating around out there.
I found them incredibly useful as a retired (very much non audio) electronic engineer - though I'd need to spend more time to refresh my knowledge of the control theory maths to fully get to grips with it all.
If, like me, the detailed maths side needs more work to follow, there are plenty of words to explain what is going on - so you can still follow the reasoning. Though if this is the case I'd strongly advise against anyone of the "NFB is evil" mindset attempting to counter the information with unfounded verbiage.
(The articles are not new - it is possible they've been linked here before. Apologies if so)
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