[sdiy] Rays modules ==8-O

[René Schmitz]

Hi Jim,

> Hello Group,
> I've decided to cut out some of Ray's modules on my board mill but the 
> VCO skeers me.
> Can anyone provide me with the appropriate tempco?
> I don't want to hunt them down only to have to order a thousand of them.
> Also will I have a hard time find LM13600 I.C.'s?
> I was actually thinking of the simpler 4069 osc but it lacks the sync, 
> PW and other features I would really like. Could they be implemented in 
> the 4069?

Pulsewidth modulation is implemented...

Syncing could be archeived by coupling some sync pulses to the node 
where the 10k and 22k resistors meet at the first gate of the schmitt 
trigger. You would need a capacitor of 100p or thereabout to decouple 
the signal.

Cheers,
  René

-- 
uzs159 at uni-bonn.de
http://www.uni-bonn.de/~uzs159