[sdiy] MS20 VCF clone troubles

[Frederic Bourgeais]

Hi all,

It works fine !
Thanks for your help

Fred

> De : Frederic Bourgeais <fred at upian.com>
> Date : Tue, 24 Feb 2004 11:29:58 +0100
> À : <synth-diy at dropmix.xs4all.nl>
> Objet : Re: [sdiy] MS20 VCF clone troubles
> 
> Hi all,
> 
>> Fred: 3080 are connected to -15/+15, but i didn't linked the bias amplifier
> input (pin 5).. Should I ground it ?
> 
>> René: Nooo! Don't do that, or you will instantly fry the 3080!
>> Hmmm.... But there is your problem. The amplifier bias pin would go to
>> the 10k resistor that comes from the current sources PNP transistor.
> 
> I did the modification yesterday, I connected the bias amplifier input to
> 10k resistor that comes from the current sources PNP transistor, but no
> way... Perhaps 3080 are fry.. I'll Try to changed with another new ones...
> 
> thanks for your help, I'm sure it will work :)
> 
> 
>