Dear Members!
First I would like to say "Thank you very
much!" to all, who answered my questions about material for capaitors and
what Mylar is. Now I know more about this. Most thankful I am for, that you all
take all questions on this list as serious and find a solution and share your
knowledge.
My investigating on caps-materials forced some
more questions now. In China it's rather difficult to buy polypropylene-caps. I
design a 3-and-a-half-digit multimeter-module, and in the data-sheets, both
Intersil and Maxim, they recommend these polypropylene-caps because of their
outstanding electrical advantages.
In my project, I use the data-sheets for the IC
"ICL 7106" from Intersil and the "MAX 138" from Maxim. I
would like to know: Do you have some experience with, to replace such a good cap
with, say 2 or 3 cheaper caps (Mylar [Polyester] is available)?
For example, could I exchange a
1uF-Polypropylene-cap with three 330nF-Polyester-caps? I need to look at the
low-leakage and low-dielectric absorption.
Thank you very much for your
attention!
Jurgen Kruger.