I have around a thousand of these - albeit in the 0.1F to 1.0F range.

Charge it up with a 5v supply (no more) through a lowish value resistor. Yo=
u=20
do not want to apply more than 5 volts to one of these capacitors.

They are handy for messing about with LED type torches, low power solar=20
charging or memory backup for Microcontrollers etc. You can't really power=
=20
much that requires any real current.

Also bear in mind that they have a fairly linear discharge rate - if you=20
charge to the full 5v, it won't stay at that charge as you use them for=20
long.

Maybe parallel them and make a nice pocket LED torch ?

Dom


-----Original Message-----=20
From: Lindy Mayfield
Sent: Friday, December 20, 2013 3:34 PM
To: piclist@mit.edu
Subject: [OT] What can I do with these super caps?

Thinking that I could use one to drive a small DC motor, like a BEAM device=
,=20
I bought 4 super-caps from Ebay called "Coin V FITN 5.5V 4F Farad=20
Ultracapacitor."

They are about the size of a 2=80 coin.

Later I learned that it has to have an internal impedance of less than 10=20
ohms before it will work.  Though non of my Googling turned up any info on=
=20
that particular part.  Would this cap work for me?

If so, how can I charge it so I can "play" with it?  I have a bench power=20
supply, 30V 1A.  On a youtube tutorial video I saw a guy charge some=20
supercaps and had a multimeter connected to watch it charge, but on the=20
video I couldn't see how he had it connected.

If they won't run a DC motor, what can I use them for?

Thanks as always, and happy holidays.
Lindy




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