[sdiy] Tantalum caps and power supply filtering

cheater cheater cheater00social at gmail.com
Tue Sep 7 17:45:48 CEST 2021


Electrolytic should be perfectly fine. Just make sure the polarity is correct.

On Tue, Sep 7, 2021 at 1:43 PM Roman Sowa <modular at go2.pl> wrote:
>
> Ceramic one would work better here, as long it's not cheap junk part
> from unknown source. The advantage of tantalum over ceramic is that if
> the tant cap shows 10uF it also has 10uF when biased at 12V. It's not
> the case with 10uF ceramic. That one may be aywhere between 8uF and 1uF
> depending on actual ceramics used.
> You canuse regular aluminium electrolytic there too, or better any low
> ESR model, or if you want really cool stuff, try polymer OsCon
> electrolytics.
>
> Roman
>
> PS, the cap is probably dead after experiencing reversed polarity of
> power cable, caused by unshrouded umarked power header.
>
> W dniu 2021-09-07 o 13:01, Jean Bender via Synth-diy pisze:
> > Hi all,
> > I'm fixing an eurorack module which has a dead tantalum capacitor (the
> > one between +12v and ground rail).
> > I gonna change this one and also the other filtering the negative rail,
> > but i'm wondering if replacing them with ceramic capacitor or
> > electrolytic ones wouldn't be a better choice.
> > If so, do i have to find exact capacitive value or should i take care to
> > use a bigger capacitance ?
> >
> > Thanks a lot for your advices !
> > Best
> > J.
> > --
> > Jean Bender <https://hearthis.at/jean-bender/>
> >
> > Hak Lofi Record <http://h.a.k.free.fr/>
> >
> >
> >
> >
> >
> >
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