[sdiy] Patchell's Boggling 13700 Expo Converter Thing???

[Oakley Sound]

> I found another reference...It looks like Tony has been using the
> circuit as well...
> http://www.oakleysound.co.uk/vca-doc.pdf

Yes, I took my idea from the EDN circuit. I changed it a little bit, but
its more or less the same. I don't think its quite as good as Mike Sim's
suggests in the article, but I can't measure THD/noise that accurately
in my little workshop. So it may well be. Simple tests make it a
maginally better circuit than either CA3280 or BA6110 operated singly.
[better S/N, better CV rejection]

Regards,

Tony Allgood                       Penrith, Cumbria, England

Oakley Sound Systems                   www.oakleysound.co.uk