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3rd harmonic distortion

When I was reading the posts concerning Cheever's Thesis I found a intresting post by John Curl and it would be intresting to get some additional info on this subjekt;

http://www.audioasylum.com/forums/prophead/messages/2907.html

"It is also interesting that a bipolar transistor's inherent 3rd harmonic distortion can be CANCELLED by using local feedback exactly 1/2 of 1/gm of the device at idle. This turns out to be 13 ohms for a bipolar transistor operating at 1 ma. This scales with current."

Now to my question to John Curl (or anybody else who knows):
Do you have any papers, articels or personal explanition to this. (Why? and What?)

I know that this coresponds to the dip in distortion wersus feedback plot. (Fig 2 in Baxandalls article Audio Power Amplifier Design pt6
(WW feb 78)) But why?

Enjoy / MAD MAN HARJU

(PS You hawe to exuse me for my bad spelling and grammar, but I'm not used to write in english)


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Topic - 3rd harmonic distortion - MAD MAN HARJU 07:53:17 12/28/04 (94)
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