Sujet : Re: Cap C-V test
De : jl (at) *nospam* glen--canyon.com (john larkin)
Groupes : sci.electronics.designDate : 04. May 2025, 15:27:55
Autres entêtes
Organisation : A noiseless patient Spider
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On 4 May 2025 11:17:07 GMT, Michael Schwingen
<
news-1513678000@discworld.dascon.de> wrote:
On 2025-05-04, john larkin <jl@glen--canyon.com> wrote:
>
Two of those caps in series would make about half the capacitance of
two in parallel, but ESR and ESL would suffer by 4:1.
>
Not really - according to your measurements, at 25V, the caps should have
about 1.46uF, so the series combination has 0.73uF instead of the 0.83uF of
the parallel combination.
>
cu
Michael
One cap is .83 at 50 volts. Two in parallel would be 1.66.
The series pair is about .73 as you note. That assumes that the DC
voltage divides equally.
Ceramic cap nonlinearity is weird. To get the most C, is it always
better to pick the cap with the highest nameplate capacitance?
Some caps are 1/5 their rated C at their rated voltage. Bad for timing
circuits.
Cap C-V test
Re: Cap C-V test