Doepfer

tim-
this is cool.  without excessive nerdery, could you tell me briefly 
why the jFET does not need power?  i'm new to circuitry and i'm 
curious.

thanks-
tom

--- In Doepfer_a100@yahoogroups.com, "Tim Stinchcombe" <timothy@...> 
wrote:
>
> Hi list,
> 
> After the recent thread about the 'purity' of the sinewaves from 
the A-
> 110, I started looking at how these could possibly be improved. I 
came 
> across a simple conversion circuit, not that much more complicated 
than 
> what is in there at the moment, and when I breadboarded it, I was 
> stunned at just how good the sine waves from it are - I have 
created a 
> new page at my website with a couple of scope traces:
> 
> http://mysite.wanadoo-
> members.co.uk/tstinchcombe/synth/invest/invest.html
> 
> (watch the line-wrap there!).
> 
> I'm in the process of seeing how feasible it might be to actually 
> modify an A-110 to incorporate the extra bits 'n bobs to do this. 
(I 
> also want to get the original paper of the circuit, so that I can 
check 
> that the component values are 'optimal'!)
> 
> Tim
>