[volt-nuts] How to keep voltage stable in the sub-100nV range?
Charles Steinmetz
csteinmetz at yandex.com
Wed Nov 2 04:42:22 EDT 2016
David wrote:
>
>> avoid Mylar/polyester/PET and high dielectric
>> constant ceramic capacitors.
Andreas wrote:
>
> Do you have some specific recommendations/suggestions what to use?
PTFE, polystyrene, or polypropylene (in descending order of desirability
for this application).
In some cases, the lowest permittivity ceramics (NP0/C0G) might be OK,
but they would not be my first choice due to higher dielectric
absorption and susceptability to microphonics. Mica has significantly
higher dielectric absorption, so it is not a good choice when settling
to a very small tolerance is required.
Best regards,
Charles
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