Tiny ovens

[Steven Varner]

Steve Jones said:

> Yes.  Well you know, this occurred to me after I posted
> my post.  It should be possible to get the heat from one
> (or two, as you suggest) of the remaining transistors and
> the thermal contact would be excellent.

Check out Rick's VCO page:

http://www.sara.nl/Rick.Jansen/Emusic/VCO/VCO.html

It shows the Natl Semiconductor VCO (with heater) and Rick's ideas as 
well.
My problem with these is the need for another power source for the VCO 
heaters.  Tempco resistors (if you can find them) might be better, or 
just chuck all the temperature worries and hope a good case design and 
normal operating temperatures keep the VCO's in fair tune.

Steve Varner