A 400mm Van De Graaff, high voltage generator that will achieve more than 180Kv in ideal conditions volts of “static” electricity. The 150mm van De Graaff generator is a complete Van de Graaff system, comprising of 1200 rpm motor with speed controller, two dissimilar charging rollers , two brass charge take off combs and a 150mm diameter stainless steel storage ball.
The 400mm VDG runs from a 12V supply from batteries(8 x AA battery holder included) or an external power supply and is completely safe to use, this is because although the output voltages are high, the current this device can provide is very small. But this is enough to get sparks to fly 60mm or more. You can use the 400mm Van de Graaff for a number experiments :- Franklin’s bells, Jumping Rice, Electric Wind, ping-pong ball cyclotron. See the resources section for more details. Now available with a Polished Stainless Steel Dome.
This Van De Graaff kit is designed for kids (or adults) to learn about “static” electricity either by actually building a working device or as part of a class. This can be used to introduce concepts of charge, voltage, static attraction and repulsion and on to discussions about charge separation, contact charging and the tribo-electric scale.
This VDG is easy to construct and to take apart. Various changes to the device can be made to study the effect that changes to the combs and charging rollers make. and the rollers can be interchanged to make a +ve or -ve device (buy two 400mm van de graaff kits and set one for +ve and one -ve for double spark length).
The kit has been made so that it can be maintained easily, so if after long use your Van De Graaff is showing signs of wear, the parts are easily available.
400mm Van De Graaff kit Specifications:
Input Voltage: 6-12V @ 1000mA(minimum) – 8xAA battery holder included.
Output Voltage: 180,000V (or more in ideal conditions)
Height: 400mm (15.5″)
Top Ball: Diameter: 150mm – Polished Stainless Steel
Rollers: Nylon/PTFE 30mm diameter , crowned
Belt: latex 30mm x 230mm
Motor: Geared 0-1200RPM, with speed controller.
Earth: Via 4mm Banana plug.
Collection combs: 0.3mm Brass.
Construction Details: https://extkits.co.uk/van-de-graaff-kit-resources/
Although the voltages produced by product are safe for humans, this is not true for any other electronic device. IT MUST NOT BE USED WITHIN 1M OF ANY ELECTRONIC EQUIPMENT.
Also be aware whilst using the device you may pick up electrostatic charge, do not operate any electronics whilst using the device. You are a conductor.
Does contain small parts and is therefore not suitable for small children.
Specifications may change.