The gradient of this graph is equal to the capacitance of the capacitor. \(C= \frac{Q}{V}\) And the area under the graph is the energy stored by the capacitor.

[Mr Carlson] recently restored an old Paco C-25 in-circuit capacitor tester. He does a very complete ... Examination of the schematic shows that the device doesn’t have a standard DC power ...

The circuit he’s building here is a solar charger for the super capacitor. Being a fairly small device there’s not a lot of current, voltage, or energy, but these are different enough from ...