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Mr Evil has been busy, I was wondering if anybody has tried this version ?
Mr Evil's Realm - Useful Components
Edit: sorry I managed to find an original thread, but it's short and not much report of anybody trying this design
http://www.diyaudio.com/forums/solid-state/148166-diamond-buffer-source-follower.html
Mr Evil's Realm - Useful Components
Edit: sorry I managed to find an original thread, but it's short and not much report of anybody trying this design
http://www.diyaudio.com/forums/solid-state/148166-diamond-buffer-source-follower.html
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You know you can buy these as an IC. I've used them in video and they are impressive.
http://www.ti.com/lit/ds/symlink/opa860.pdf
G²
I have been using the principle for years, but I implement it in a different, simpler manner (IMHO anyway): I place the sensing resistors in the collectors, which avoids the need of multiple mirroring/translation.
With a single ended topology, the degree of compensation can be very high, close to perfection (BTW, the compensation is positive feedback, not negative).
In a PP, things are much more difficult: each half tries to impose its perfect output voltage to the other, and this ends in a destructive fight, unless some degeneration is added, but this degrades the performance.
This is the reason why I developped alternatives, with the complementary half asymetric, and slave to the "noble" upper half:
http://www.diyaudio.com/forums/solid-state/184895-halve-diamond-double-performance.html
http://www.diyaudio.com/forums/solid-state/185501-unigabuf-follower-cut-out-leader.html
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