i was just under the impression that the supply alone would cost like $50+ and thats the only reason i bothered looking for more amps. its done and over, i got the 0.8A version and its on its way.
back to the matter at hand. i noticed the power section is missing some component ID's so i asks bugs to fill me in. just in case anyone else is building this and can't figure it out for themselves ( like me) here is some of what he said. hope this is cool with you tom, just thought i would save you the time
"R90 - R91 - learnt off Ken Stone's site:: he uses RF Chokes to
try to cut down noise, but says you can just insert 10ohm resistors
(dunno if it actually makes much difference - probably not in a
single device, but maybe in a big system - so you could probably
"C90 & C91 should be something like 10u electrolytic caps (standard to stabilise the power lines) and C92-5 are all 100nF decoupling caps - cheapy ceramic types work fine - two of these go very close to the AD781 (right by the +v and -v input pins) and the C95 I have by the +v pin of the 40106 ('cos digi chips can spit nastyness onto the powerlines)."
"I'd meant to try out the design running on two 9v batteries (probably then change the main regulators to 7808 and 7908 naturally..!..)... It may well work - one 9v alone wouldn't be enough - the AD781 needs at least +/-5v and the 40106 needs a stable +5 supply."
"And, yeah, OF COURSE --- 3 free gates in the 40106 - obvious! Its so
easy to make lofi oscs out of them - why not do three extra mod
oscs?? You can add in extra cv inputs into the TL071 - just use extra
100k resistors into the common point (like where the CVs all connect
and in case anyone else was interested i did successfully order free copies of the AD781ANZ and other stuff by signing up for samples at analog.com i just made sure not to give my real phone number so i didn't have to bother answering questions or anything, and ignored the emails.http://www.analog.com/en/prod/0,2877,AD781,00.html
thanks again for making this tom and making it available to diy