Integrating Capacitor

[jorgen.bergfors at idg.se]

>I think, if you leave away teflon, the polystyrene types offer
lowest leakage and hysteresis, thus behave allmost ideal like a cap.

>Other types, especially ceramic simply won't do. Bad hysteresis.

>The vco cuurent source errors are bad enough, no need to add additional
error with crappy caps.

>m.c.

But polystyene caps are rather difficult to find. Isn't polypropylene a good alternative? They have low temperature coefficient and low tolerance. If I remember correctly, the leakage is low too.

/Jorgen