Van de Graaff Generator – High Voltage Electrostatics Demonstrator (Up to 200kV)

This professionally manufactured Van de Graaff Generator is specially designed for demonstrating electrostatic principles and for experiments requiring a continuous source of high voltage. Robust, reliable, and visually engaging, it is an essential piece of apparatus for secondary school and college physics laboratories.

The generator is mounted on a stable base and powered by a smooth‑running AC motor, operating on 220/240V AC, 50/60Hz. A transparent acrylic shaft allows clear observation of the charge‑carrying belt, helping students visualise how electrostatic charge is transferred and accumulated within the system.

A high‑quality silicone rubber belt, selected for its excellent insulation resistance, transports charge efficiently to the 150mm diameter aluminium dome. The generator can develop voltages of up to 200kV, depending on ambient conditions, producing visible sparks of up to 60mm for impressive classroom demonstrations.

Clearly visible aluminium mesh charge‑collecting combs and easily adjustable belt tracking ensure reliable performance and straightforward maintenance. Multiple 4mm sockets on the dome and base allow simple electrical connections for practical experiments. A supplied spherical discharger (100mm diameter) with an insulated handle enables safe and controlled discharge of stored charge.

Key Features

• Designed for electrostatic and high‑voltage experiments
• Powered by a smooth‑running AC motor
• Operates on 220/240V AC, 50/60Hz
• Silicone rubber charge‑collecting belt with high insulation resistance
• Easily adjustable belt tracking
• Clearly visible aluminium mesh charge‑collecting combs
• 150mm diameter aluminium dome
• Acrylic shaft for full visibility of belt operation
• Develops up to 200kV (conditions dependent)
• Produces sparks of up to 60mm
• 4mm sockets in dome and base for external connections
• 100mm diameter spherical discharger with insulated handle

Ideal for School Physics Lessons

Perfect for KS3, GCSE, and A‑Level physics, this Van de Graaff Generator enables engaging, hands‑on demonstrations of electrostatic phenomena while reinforcing key curriculum concepts in a safe and memorable way.

• Demonstrating static electricity and charge transfer
• Exploring electric fields, potential difference, and discharge
• Investigating the effects of humidity and grounding on voltage
• Supporting practical understanding of high‑voltage safety
• Encouraging enquiry‑based learning through visible, dramatic effects

With its clear construction, reliable performance, and impressive visual impact, this Van de Graaff Generator is an outstanding teaching aid for bringing electrostatics to life in the classroom.