[sdiy] expo converter

[René Schmitz]

At 12:52 28.03.01 -0800, you wrote:
>    If you want to experiment with an OTA based Tempco, you will find an
example of one
>implementation on my website, and JH had one at one time on his (it was
still there the
>last time I looked).  I used the transistor in the expo converter as that
does the
>constant current reference as the temp sensor.  Works very nicely.  JH
gave me the idea
>of using the diode bias current in the OTA to control the gain.  The
amplifier bias
>current is used to control the scale.
>
>
>    Mine can be found at: http://www.silcom.com/~patchell/smb1/smb.pdf
>
>    -Jim

Even more can be found in the Datasheet of the LM13600 Fig. 31. 
An application of this is the latest (?) VCO made by PAiA.

Bye,
 René



>Emmanuel AMADIO wrote:
>
>> >>I am not posting it to the open web for obvious reasons.
>>
>> Just post it on the list and get the money back by tacking the members
to court :-).
>> You can get rich, just that the investment in lawyers is larger :-).
>>
>> It would give others the time to experiment with it.
>>
>> Not to be taken seriously,
>> Emmanuel
>
>
-- 
uzs159 at uni-bonn.de
http://www.uni-bonn.de/~uzs159