That's good to know Ken !
Do you recommend using the HFE to match the transistors in your vco instead of the lm394 ?
I'm not concerned about 1v/o tracking being super accurate.
Also, how do you "join" the 2 transistors together ?
Thanks for any info, this is all new to me and if i don't have to buy these expensive pre matched transistors that would be great!
Do you recommend using the HFE to match the transistors in your vco instead of the lm394 ?
I'm not concerned about 1v/o tracking being super accurate.
Also, how do you "join" the 2 transistors together ?
Thanks for any info, this is all new to me and if i don't have to buy these expensive pre matched transistors that would be great!
--- In cgs_synth@yahoogroups.com, "cg_synth" <sasami@...> wrote:
>
> My "dirty little secret" for matching my transistors is to plug them into the HFE test function of a cheap multimeter.
>
> --- In cgs_synth@yahoogroups.com, Richard Brewster <pugix@> wrote:
> >
> > Last week I built a DUSG and matched the transistors using the method
> > described in Electronotes #39, p. 6. It's much simpler than Ian
> > Frijtz's method, which I tried first. I had trouble getting enough
> > resolution on my measurement, only two digits of precision. With the EN
> > approach, I got three digits.
> >
> > Richard Brewster
> > http://pugix.com
> >
>