# Super Capacitor

Vendor's Description:

Description: Yes you read that correctly - 10Farad capacitor. This small cap can be charged up and then slowly dissapated running an entire system for hours. Combine two in series for 5F/5V. Do not over voltage or reverse polarize these capacitors.

Description: Yes you read that correctly - 10Farad capacitor. This small cap can be charged up and then slowly dissapated running an entire system for hours. Combine two in series for 5F/5V. Do not over voltage or reverse polarize these capacitors. (from Sparkfun)

Just as a reminder:

Capacitors in series get a total capacitance(Ctot) of:

(1/Ctot)=(1/C1)+(1/C2)+...+(1/Cn)   which is like saying   Ctot=[(1/C1)+(1/C2)+...+(1/Cn)]^-1

Capacitors in parallel get:

Ctot=C1+C2+...+Cn

The voltage rating is the max voltage it can take. (http://letsmakerobots.com/node/1988)

some formulae:

i=(f/R)*e^(-t/τ)

ΔV=f*e^(-t/τ)

where τ=R*C

and f is the potential difference of the capacitor at the beginning

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Waiting for delivery on a nice 30F cap to use as a power levelling and storage device in a planned solar powered weather station.

It's rated at 2.7V, so i have it sitting between the parallel solar array (2 panels :P) that puts out 1.V, and a pololu voltage boost that then steps 1.5 up to 5V, suitable for running logic and transmitters.