Friends, it is with great sadness that I have to report that member Edmond Verrijn Stuart has passed on 29th of May, at the age of 81, in his beloved Amsterdam.
Edmond was an extremely clever designer; his design of an optically coupled and regulated power amp bias system, published in then Wireless World has been a milestone in stable bias circuitry for power amps.
More recently, his DiAna software package to measure and display harmonic distortion including residuals from a soundcard measurement is used by many on this forum.
Edmond was very generous with his time and talent, always willing to help and explain, but he had no truck with people too lazy to do their own legwork.
Jan
Edmond was an extremely clever designer; his design of an optically coupled and regulated power amp bias system, published in then Wireless World has been a milestone in stable bias circuitry for power amps.
More recently, his DiAna software package to measure and display harmonic distortion including residuals from a soundcard measurement is used by many on this forum.
Edmond was very generous with his time and talent, always willing to help and explain, but he had no truck with people too lazy to do their own legwork.
Jan
Attachments
RIP Edmond, this is sad news. Thank you for your kind and ingenious contributions over the years; the world would be a poorer place without such things.
For years I have been thinking about his SuperTIS design and at some point I wanted to play with it. Now his page seems to be gone and unfortunately there is no snapshot available via archive.org.
Is there anyone having a copy of the SuperTIS (and maybe auto-bias-2) part?
I just found something about PGP here: https://www.diyaudio.com/community/attachments/pgp-amp-comment-to-ndfl-pdf.161136/
Is there anyone having a copy of the SuperTIS (and maybe auto-bias-2) part?
I just found something about PGP here: https://www.diyaudio.com/community/attachments/pgp-amp-comment-to-ndfl-pdf.161136/