old ultracapacitors?
 

Dear All

I'm hoping to scrounge a couple of small ultracapacitors ( = "EDLC", or
supercapacitor, or pseudocapacitor) from obtanium. I've heard they're
used in some small consumer items.

Could anyone tell me potential sources of such junque? eg should I be
looking for old mobile phones, or cameras, or CD players, or what?

Cheers
Richard

I'm hoping to scrounge a couple of small ultracapacitors ( =
"EDLC", or
supercapacitor, or pseudocapacitor) from obtanium. I've heard
they're
.....
Haven't checked lately, but I've bought 'em from Radio Shack.
Assume you know what you're doing. They're very high internal
resistance
and useless for anything that takes any current at all.

mike

Hi Mike

Thanks for the reply. I'm not sure we're talking about the same thing
though? The ultracapacitors I'm thinking of have quite low ESR (tens
of mOhm) and typically deliver 8-20 A short circuit current for
something the size of a small electrolytic cap (which equates to low
power compared to a capacitor, but is plenty of current for me!!)

For example
http://www.maxwell.com/pdf/uc/datasheets/PC_Series.pdf
or
http://www.maxwell.com/pdf/uc/manual...ule_manual.pdf

Cheers
Richard

wrote in message
oups.com...
Dear All

I'm hoping to scrounge a couple of small ultracapacitors ( = "EDLC", or
supercapacitor, or pseudocapacitor) from obtanium. I've heard they're
used in some small consumer items.

Could anyone tell me potential sources of such junque? eg should I be
looking for old mobile phones, or cameras, or CD players, or what?

Cheers
Richard


They're readily available new from places like DigiKey and All Electronics,
used I've salvaged them from busted telephone answering machines.