vandergraph generator
in [Basics]
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From: trickyrick on 9 Feb 2010 15:36 My son and I have made one of those vander graph generator's There is a belt that carries a positive charge up to a metal ball. I want to increase the charge so I was wondering if i got myself one of those ion generators they can generate neg or pos you can get kits for around $15 Would that increase the static charge on the metal ball Thanks
From: Tom Biasi on 9 Feb 2010 16:44 "trickyrick" <rickj(a)sympatico.ca> wrote in message news:34da9c31-6c62-412a-9692-0095711c21a3(a)y33g2000yqb.googlegroups.com... > My son and I have made one of those vander graph generator's There > is a belt that carries a positive charge up to a metal ball. I want > to increase the charge so I was wondering if i got myself one of those > ion generators they can generate neg or pos you can get kits for > around $15 Would that increase the static charge on the metal ball > Thanks I doubt it. Its best to refine your generator. Collector site at the ball should be sharp and clean. Clean rollers and belt. Keep the outside of the ball clean. Use in dry air. Increase the speed a little if you can. If you can get a chance take your son to the Boston Science Museum to see the real one. It is quite a treat to see their demo. I never get tired of it. Tom
From: Bob Eld on 9 Feb 2010 16:52 "trickyrick" <rickj(a)sympatico.ca> wrote in message news:34da9c31-6c62-412a-9692-0095711c21a3(a)y33g2000yqb.googlegroups.com... > My son and I have made one of those vander graph generator's There > is a belt that carries a positive charge up to a metal ball. I want > to increase the charge so I was wondering if i got myself one of those > ion generators they can generate neg or pos you can get kits for > around $15 Would that increase the static charge on the metal ball > Thanks You mean Van de Graaff Generator named after it's inventor Robert J. Van de Graaff. In a Van de Graaff generator the charge will build in the metal ball at the top raising the voltage until the leakage currents, corona, and other current paths equal the amount of charge being re-supplied by the belt. If you supply extra current from a high voltage source such as you mention, the voltage attained will be become higher because the charging current is higher. A well designed, and insulated generator, operating in dry air may attain voltage high enough to spark from the ball all the way to ground. Very impressive. The added charge should be "sprayed" on the belt from the lower brush in the unit's base. Of course, it must be insulated from the frame.
From: T on 10 Feb 2010 16:41 In article <4b71d753$0$22533$607ed4bc(a)cv.net>, tombiasi(a)optonline.net says... > > "trickyrick" <rickj(a)sympatico.ca> wrote in message > news:34da9c31-6c62-412a-9692-0095711c21a3(a)y33g2000yqb.googlegroups.com... > > My son and I have made one of those vander graph generator's There > > is a belt that carries a positive charge up to a metal ball. I want > > to increase the charge so I was wondering if i got myself one of those > > ion generators they can generate neg or pos you can get kits for > > around $15 Would that increase the static charge on the metal ball > > Thanks > > > I doubt it. Its best to refine your generator. Collector site at the ball > should be sharp and clean. Clean rollers and belt. Keep the outside of the > ball clean. Use in dry air. Increase the speed a little if you can. > If you can get a chance take your son to the Boston Science Museum to see > the real one. It is quite a treat to see their demo. I never get tired of > it. > > Tom Reminds me that I haven't seen that show in years. Have to get up there again.
From: default on 11 Feb 2010 09:05
On Tue, 9 Feb 2010 12:36:01 -0800 (PST), trickyrick <rickj(a)sympatico.ca> wrote: >My son and I have made one of those vander graph generator's There >is a belt that carries a positive charge up to a metal ball. I want >to increase the charge so I was wondering if i got myself one of those >ion generators they can generate neg or pos you can get kits for >around $15 Would that increase the static charge on the metal ball >Thanks Hell yes! That's how it is done on the big machines. -- |