[sdiy] Temperature compensating capacitors
uzs159 at uni-bonn.de
Tue May 6 13:59:24 CEST 2014
Hi Neil and all,
Am 06.05.2014 12:01, schrieb Neil Johnson:
> cheater00 wrote:
>> has anyone tried using tempco capacitors in their designs?
> Curve 'T' looks closest to compensate for an expo.
> Any idea what availability and pricing is like?
I can't see how a changing capacitance would be able to correct for the
scale factor temperature dependancy?
The depencancy for T is inside the argument of an exp() function, but
the caps tempco would act only on the outside as a factor.
I could image these might be useful to compensate some tuning drift, if
the scale factor was compensated by some other means. But then again a
PTAT sensor does the same.
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