Capacitor charging and Discharging Lab
In this lab we considering charging and discharging a capacitor in order to see the rate at which energy is absorbed and which energy is released.
For figure 6, we calculate the thevenin voltage and resistances.
Vth = R_leak/(Rleak+Rcharge)*Vs
Rth=Rcharge*Rleak/(Rcharge+Rleak)
discharge is the same.
For a 9V DC power supply, 20s of stored energy that discharges in 2s, compute the capacitance:
7.5MJ = 1/2CV^2=.617 uF
R=68.4Kohm
peak current of 1.39uA. our box can handle this power.
We set up the experiment and take pictures of the discharge and charging curves. The pictures above show our resulting graphs.
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