[sdiy] Working with the ASM1 VCO.. weird MAT-02 behaviour...

[Jean-Pierre Desrochers]

I replaced the ramp cap from .0022uf to 0.022uf
And the LM311 feedback pulse cap from 22pf to 470pf
And the VCO seems to behave more stable..
I don't have to go too low now  Vbe currents wise
on the transistor pair.
I did not think of that possibility..
I tried again all the MAT01, 01 & 12 pairs
with these new caps but There is still a kick back
portion of the span when I lower the Vbe current that is not very far to
occur..
I'll keep my 2N3904 matched pair !
Thank you !

-----Message d'origine-----
De : Synth-diy [mailto:synth-diy-bounces at synth-diy.org] De la part de Oakley
Sound via Synth-diy
Envoyé : 17 janvier 2020 09:54
À : Synth DIY
Objet : Re: [sdiy] Working with the ASM1 VCO.. weird MAT-02 behaviour...

 > why not increase the timing capacitor by 100 or 1000 times.

Just remember to increase the reset time too, otherwise you'll not 
discharge it completely for the flyback.

One of the disadvantages with sawtooth cores over triangle ones.

Tony

www.oakleysound.com
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