The classic Van de Graff Generator device demonstrates some of the fundamental concepts in electrostatics: charge accumulation, potential differences, capacitance, and resistivity. The Generator's conductor sphere is detachable, the engine speed is adjustable (alternatively the device can be operated manually) and the device includes a small discharge sphere on a rod. The generator supplies a safe DC voltage of max. 200 kV and comes with electrostatic whirl and electrostatic plume.

Specifications:
Max. voltage: approx. 200 kV
Length of sparks: up to 5 cm, ball distance adjustable
Conductor sphere: 225 mm dia.
Sphere on rod: 70 mm dia. 
Dimensions: approx. 250 x 350 x 650 mm