[sdiy] 303d

[tomg@efm]

Here's a short demo of the tb vco and vcf . They are mostly 
real except, I've changed the bias scheme so that everybody
is happy at +/-12V and stuffed the vco in a 3046. Oh....The
vcf is entirely discreet but will end up mostly in 3046s too.
400K
http://www.geocities.com/efm_gc/303free/303d-demo.mp3

Here is the scaling test. It screws MP3 up big time! 800K
http://www.geocities.com/efm_gc/303free/303d-test.mp3

No midi or sequencing this time it's all real time Tom...

And here's a pic or two of the glob of wires that makes this 
all possible.....I really just tossed these in to make Harry
freak. Sit down before you look Harry......;-) 

http://www.geocities.com/efm_gc/303free/303d-bench.pdf

Tom




> The tb VCO now lives in a 3046....I'm happy! This is going
> to work this time!
> 
> Tom
> 
> 
> > My problems have been numerous and until today mostly
> > unresolved...The 303 VCO had a lock-up problem. Once
> > out of range blamo! no VCO. It's now solved and has the
> > range we normally associate with the VCO4 or ASM1
> > oscillators, no lock up what so ever.  It also hit the supply
> > so hard that the VCF tended to FM from the rails....Also
> > fixed! ....everything I wanted to fix has been resolved. So
> > I'm off to do the pcboard layout again this time with the 
> > "real" 303 guts.  We'll find out how it sounds in a few days.