[sdiy] Hmmm...OK NOW you can panic :(

[mark verbos]

That's very similar to what I was referencing. I like those more than 
OTAs. I guess the existing schematics are a pain without the trusty 
3080, but we'll live. Just don't take away Op Amps. ;)

Mark


Ian Fritz wrote:

> At 07:22 PM 9/28/2004, mark verbos wrote:
>
>> TomG made a discrete model of the 3080 a long time ago. I never built 
>> one, but I have built some of the buchla oscillators that have a 
>> similar discrete OTA. The good thing when you build them from the 
>> ground up is that you can run 'em from an NPN expo converter AND can 
>> add a symetry control.
>>
>> Mark
>
>
>
> Better yet, you don't even need an OTA.  See my high-performance TRI 
> VCO that just uses current mirrors and reversing switches.  This works 
> much better than OTA designs.
>
> http://home.earthlink.net/~ijfritz/sy_cir4.htm
>
>   Ian
>
>
>