:: : : In the latest edition of " Make " magazine ( which I strongly recommend to any tinkerers ) there are complete instructions for building a Wimshurst machine.
12.
The electrophorus is thus actually a manually operated electrostatic generator, using the same principle of electrostatic induction as electrostatic machines such as the Wimshurst machine and the Van de Graaff generator.
13.
If its a Wimshurst machine or Van de Graaf generator these will have a high output resistance and so the capacitor should be connected from the output to earth forming the RC circuit to store up the energy.