Kelvin replenisher

Kelvin replenisher

[¦kel·vən ri′plen·əsh·ər]
(electricity)
A simple electrostatic generator in which curved metal plates attached to an insulating arm rotate between larger curved plates, and the contacts of the smaller plates with wipers connecting them to the larger plates and to each other result in the accumulation of charge on the smaller plates, energy being supplied by the rotation of the arm.