[Shotimes] capacitor compatibility -or- I'm a dumbass

[Steve Weinrich]

Actually, 2000 microfarads is equal 0.002 farad or 2 millifarads.

Prefix:
 Milli = 10^-3  (prefix - lower case "m")
 Micro =10^-6 (prefix u - actually the Greek equivilent).  Most commonly
used

Your original assesment as to the working voltage in your original post is
somewhat correct, that is, the rated voltage on the device is the designed
maximum voltage that the device can withstand without internal insulation
breakdown.

Your most recent post in which you stated "is directly proportional  to the
voltage applied across its plates" is, however, completely incorrect.  There
would be no derating of the capacitance with a change of applied voltage.
Capacitance is capacitance regardless of the applied voltage (as long as the
rating is not exceeded, in which case, the device often becomes a
firecracker).

Steve


----- Original Message ----- 
From: "Hartberger, Jason M. AT3" <hartbejm@roosevelt.navy.mil>
To: "Hartberger, Jason M. AT3" <hartbejm@roosevelt.navy.mil>; "SHOtimes
mailing list (E-mail)" <shotimes@autox.team.net>
Sent: Thursday, December 23, 2004 11:31 PM
Subject: RE: [Shotimes] capacitor compatibility -or- I'm a dumbass


> Ok... never mind on the whole thing. 2000 microfarahds is is only .2
> farahds, and I figured out that since capacitance is directly proportional
> to the voltage applied across its plates, at 12 volts it would have like
80
> microfarahds... useless. absolutely useless. *sob*
>
> I hate this place.
>
>
> -----Original Message-----
> From: Hartberger, Jason M. AT3 [mailto:hartbejm@roosevelt.navy.mil]
> Sent: Thursday, December 23, 2004 10:55 AM
> To: SHOtimes mailing list (E-mail)
> Subject: [Shotimes] capacitor compatibility
>
>
> I have just acquired a 2 Farahd, 450 volt capacitor, and i'm wondering if
> there's any way in hell it's gonna work with a stereo system. I don't know
> that much about capacitors any more (it's been too long!), and nobody here
> knows whether a 450 volt AC capacitor will work with a 12 volt DC system.
As
> far as I know, a capacitor is a capacitor, and the 450V rating is the
> maximum voltage it can hold, and there shouldn't be any problems. I wanna
> make sure first, though...
>
> Jason
>
> P.S. if it works, I have another one that I can see about getting to
> somebody for like $50 or so plus shipping...
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