[sdiy] OTA VCO bad or not!

[mark verbos]

The triangles sometimes come out asymmetrical. The problem I have found 
is no way to trim them. If you build a discrete OTA, like the Buchla 
ones, you can match the transistors and put a trim at the top. Plus, if 
you use discrete transistors, you can use an NPN expo converter.

Mark




karl dalen wrote:
> Was OTA's so bad for doing regular triangle VCOs?
> Is the Electronotes OTA VCO so bad?
> I cant remember but they cant be that bad or can they?
> I now the issues about OTA's but so bad cant they be?!
>  
> KD
>