Post #1873733
2026-02-01 17:40 UTC
Oh interesting!
This one shows a few more details:
https://commons.wikimedia.org/wiki/File:Van_de_Graf_Electrostatic_Accellerator_%28NCSR_Demokritos%29_Close-up.jpg
https://commons.wikimedia.org/wiki/File:Van_de_Graf_Electrostatic_Accellerator_%28NCSR_Demokritos%29.jpg
Including the actual brush placement!
of course, it's once again different than the "obvious, ideal solution" others say they have found ;-)
But who am I to argue with an original, van de graaff brand, van de graaff!
Replies (1)
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@PatrickHerd@aus.social 2026-02-01 22:41
@gigabecquerel Brushes a little way up the belt means that the lower roller can be conductive and grounded - No isolated supply needed for the motor then. IIRC the charge sprayer runs at around 5kV, will ask.