Hi all If I am right the surface of the sphere should be as smooth as possible, and I have been thinking of getting the surface as smooth as possible in an...
Elmer The surface smoothness of the terminal has very little effect on the maximum voltage, that is determined by the minimum radius of the sphere itself. I...
ok thanks Don, my terminal would be really big (I plan for 1 meter or 40 inches) but I do not need to let it be chromed, which saves money and effort Elmer ......
Elmer, I am now building a VDG, and I would also like to have as large a terminal as possible. The maximum possible voltage is limited by the terminal size and...
Don, I am planning to build my sphere by shaping foamed pvc sheet segments (0.16 inch thick) on a mould and then glue them together. The foamed pvc is very...
Elmer, Your hemisphere mould is beautiful. I had considered making a sphere by plasma spraying a model with a metalic coating, but the temperatures would be...
Don Thanks that you find the hemisphere beautiful, it was a lot of work but it looks really pretty when finished, I actually do not like the idea of having...
Don, By the way if you need anymore info or explanation about some of the processes, because most of the stuff I can find is in dutch, I will be happy to...
Hi, If you would want to increase the voltage of the terminal without increasing the size of the terminal, you could put the terminal in a box and increase the...
Hi All: All the compact high voltage VDGs I have seen run in a partial vacuum. Am I missing something? Dck _____ From: VanDeGraaffGenerator@yahoogroups.com ...
Hi Dick see this pdf http://www.duniway.com/images/pdf/pg/Paschen-Curve.pdf it shows a bit how the paschen law and the curve from that law creates a low...
Dick, You can see from the Pachen curve in the previous post that the breakdown voltage increases at very low pressures (the left side) or at higher gas...
But the question is now then, would it matter if there is not a lot of room in the "box" around the terminal. Personally I do not think so since you mean...
Hi Elmer, Assuming that the (numerous) technical problems can be solved, the electrons will acquire an energy of only 1 MeV, since that is the total ...
Bert: Thanks for the reply. Your comments about Sulfur Hexafluoride jogged my malfunctioning memory to back 20 years ago when we used that and other gasses to...
I want to make lichtenberg figures just like bert, but mine will not be commercial just for myself (more for the fun than anything else) and a LINAC is very...
Thanks for that link Bert, I know sort of how to make them I read pretty much your entire site, that had something to do with it, excellent site by the way, so...
hi guy i work in a interactive science museum and here we have a van de graff, fortunatly is working very well but i would like to make diferents kind of show...
... Hi Elmer, The discharge-free region around the perimeter of the figures is unavoidable even if you get adequate electron penetration since the charge...
Some suggestions you could try strings on the vdg, they will stick out if you run the machine, just like your hair standing up because of the charge, and a...
Hi Bert Well my electron gun will be a bit different in its design, than the usual guns that you see on the internet. My design is so that the filaments of...
Sure hope you got a lot of shielding somewhere... ... the usual guns that you see on the internet. My design is so that the filaments of tungsten are heated,...
Rafael: 1. tape the ends of several colored tissue paper streamers to the top of the terminal and they will extend out radially when the VDG is operated...like...
Hi Rafael, It is good to hear from you. I am posting a picture of plans for a simple corona motor for use with a VDG. It can be built large or small. A larger...
Hi, Just as an update on my progress in building the large plastic sphere, this week I went to the company that does the metal spraying process and they did...
Hi all , I received this message from Hvlist. Original poster: Steven Roys <sroys@...> Do any of you have experience with cutting VDG belts from thin ...
Having problems with message search?
Fill out this form to ensure your group is one of the first to be migrated to the new message search system.
