From: Algis Sodonis (asodonis@urbanschool.org)
Date: Wed Mar 09 2005 - 14:00:43 PST
Message-id: <fc.000f7611007ed5003b9aca004513abe4.7ed505@urbanschool.org> Date: Wed, 09 Mar 2005 14:00:43 -0800 Subject: Re: pinhole 1 farad capacitors From: "Algis Sodonis" <asodonis@urbanschool.org>
I think I got mine from Arbor Scientific.
Algis Sodonis
The Urban School of San Francisco
"Pinhole Listserv" <pinhole@exploratorium.edu> on Wednesday, March 9, 2005 at 1:44 PM -0800 wrote:
>hey all
>
>does anyone know a good source for 1 farad 5 volt capacitors? we've been looking through the Jameco catalog and online and its a bit overwhelming and hard to find what we want. We ordered some from Jameco and they actually turn out to be battery back-up capacitors which release their charge very slowly (see below). We have one NEC brand capacitor which works great. any ideas?
>
>for the physics types: how do you make a capacitor that releases its charge slowly? the caps we got from jameco wont even discharge when we short circuit them with a wire! so what's the deal? i mean, don't we tell our students that capacitors can release their charge all at once like in a camera flash?
>
>happy charging
>
>-eric
>
>
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