PAiA VCO

[patchell]

John Speth wrote:

>    Doesn't the detection element need to be in close thermal sync with
> the
> device it needs to compensate in order for thermal compensation to
> work?
>
> John Speth
> Molectron Detector, Inc.
> http://www.molectron.com
> mailto:johns at molectron.com
>
>

    I would say so.  Not seeing how the module is assembled, I cannot
say how that might have been done.  The exponential converter uses a
pair of 2n3906's.  These of course, have to be matched, and in close
thermal contact with each other.  If the transistors are mounted to the
LM13700 (he uses one of the linearizer diodes as the temp sensor), that
would probably be more than close enough.  I have had the kit on order
for quite some time.  If I happen to get mine first, I will clue
everybody in on how it is done.

--
 -Jim
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