[sdiy] 4069 VCO linearity SUCCESS

Scott Gravenhorst music.maker at gte.net
Mon Oct 29 20:34:43 CET 2001


>>I'd recommend going back to your initial setup, with the emitters 
>>going to the -input, base to out and +input grounded. The emitters 
>>will be at GND due to the feedback. All you need to make it work 
>>right is to add an inverting stage at the input.
>
>If I do that, I will have reverse biased NPNs...

NO I WOULDN'T.  Jeez.  I need to try this, I have two
opamps in the circuit anyway.  I *really* want to get
rid of that resistor.

You're right, René.  I have no idea what I was thinking.
I have to stop getting so involved with this stuff that
I forget to eat.  I'm a diabetic and I can start to
'lose it' when I don't eat on time.  Well, it least
this is *that* much fun!

=========================================================  
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