Supplying the science hobbyist, industry, government, schools & universities since 1998.
"We specialize in small orders"
Van de Graaff Generators

400,000 or 600,000 volts!

HIGH POWER
Giant Van de Graaff
Electrostatic Generators

Generate over 1/2 million volts to produce crashing lightning bolts and perform fantastic electrostatic experiments on an incredible and spectacular scale!
A fascinating piece of equipment for education, laboratory research, or just plain fun!


600,000 volt Van de Graaff Generator with 17" collector sphere.

Demonstrate lightning, lightning rods, St. Elmo's fire, repulsion of like charges, electrostatic dust collection and the flow of ions. Create colorful glowing demonstrations of the Aurora Borealis by heating water in a sealed container and placing it near the generator. 
Easy-to-build electrostatic projects can be scaled up to large and impressive proportions.
Build & power ion drive engines and a variety of 'antigravity' models that will silently float in mid-air using nothing but common materials from around the house.
These huge generators are ideal for large auditorium or classroom science demonstrations.

 We offer two versions of the generator, a 600,000 volt model and a 400,000 volt model.
The larger 600,000 volt unit is equipped with a gigantic 17" diameter polished Stainless Steel collector sphere. The 400,000 volt unit features a 14" diameter polished Stainless Steel collector.
Both generators are powered by a 3,000 rpm, 110v ac motor and produce a current of approximately
10 microamps. Rock solid construction with an unbreakable clear Lucite insulating column.
Other than the different collector sizes, the generators are identical in construction.
An extra transport belt is included with either unit.

Booklet of high voltage demonstrations & experiments is included.

WARNING - HIGH VOLTAGE DANGER!
While actual current produced in this device is low, there still exists the potential of high voltage shock. We recommend extreme caution and knowledgeable adult supervision at all times when operating high voltage electrical equipment. People with cardiac pacemakers should never operate this generator or approach it while in operation.
The electrical fields produced could cause the pacemaker to be damaged or malfunction. 

400,000 volt Van deGraaff Generator: $665.00

600,000 volt Van deGraaff Generator: $725.00

Van de Graaff Generator Parts

14" Stainless Steel
Collector Sphere: $175.00

17" Stainless Steel
Collector Globe: $250.00

Build your own Van de Graaff Generator using these high quality collector spheres.
The general rule of thumb for voltage output is 70,000 x sphere radius.
For the spheres above: 490,000 volts for 14" and 595,000 volts for 17". Actual voltage output depends on a variety of factors, but this estimate is fairly accurate.
Both collector spheres have a 3.5" hole in the bottom - curved inward to prevent high voltage corona losses.
Fabricated from highly polished Stainless Steel (far more durable and dent-resistant than aluminum is).
The mirror polish eliminates parasite corona discharges and  increases voltage capacity by 4%.