Graaff Van Generator

Product Description

Graaff Van Generator

• Very large and very spectacular apparatus
• Sparks up to 100 mm 
• Spheres diameters 260 mm and 100 mm
• The Van de Graaff vertical generator comprises a silicone belt that acts as a conveyor for electric charges. 
• Its movement is ensured by two cylindrical pulleys. 
• One of them is in the hollow metallic sphere. 
• The sphere is at the top of an insulating column which contains the belt. 
• At the base of the device is a crank which actuates the driving pulley. 
• On this type of generator, the larger the spherical envelope, the higher its potential. 
• Theoretically, with a perfect surface for the metal sphere, the maximum voltage is of the order of 30 kV for each centimeter of radius. 
• This theoretical value is not reached in practice because of different parameters: irregular surface, losses, etc.

Technical characteristics

• Dimensions:750 x 260 x 380 mm
• Large sphere:260 mm
• Small sphere:100  mm