vandergraph generator

T

trickyrick

Guest
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
 
"trickyrick" <rickj@sympatico.ca> wrote in message
news:34da9c31-6c62-412a-9692-0095711c21a3@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
Click to expand...

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
 
"trickyrick" <rickj@sympatico.ca> wrote in message
news:34da9c31-6c62-412a-9692-0095711c21a3@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
Click to expand...
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.
 
In article <4b71d753$0$22533$607ed4bc@cv.net>, tombiasi@optonline.net
says...
"trickyrick" <rickj@sympatico.ca> wrote in message
news:34da9c31-6c62-412a-9692-0095711c21a3@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
Click to expand...
Reminds me that I haven't seen that show in years. Have to get up there
again.
 
On Tue, 9 Feb 2010 12:36:01 -0800 (PST), trickyrick
<rickj@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
Click to expand...
Hell yes! That's how it is done on the big machines.
--
 
On Feb 11, 9:05 am, default <defa...@defaulter.net> wrote:
On Tue, 9 Feb 2010 12:36:01 -0800 (PST), trickyrick

ri...@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.
--
Click to expand...
Thanks guys Then I take it that an Ion generator will make a
difference do you think this one will do
or should I look for something bigger http://store.qkits.com/moreinfo.cfm/QK57
 
"trickyrick" <rickj@sympatico.ca> wrote in message
news:998aee44-5f4c-4e62-8467-fcc772b0a6fe@m4g2000vbn.googlegroups.com...
On Feb 11, 9:05 am, default <defa...@defaulter.net> wrote:
On Tue, 9 Feb 2010 12:36:01 -0800 (PST), trickyrick

ri...@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.
--
Click to expand...
Thanks guys Then I take it that an Ion generator will make a
difference do you think this one will do
or should I look for something bigger
http://store.qkits.com/moreinfo.cfm/QK57

I don't think an ion generator will make enough difference for the money.
 
Tom Biasi wrote:
"trickyrick" <rickj@sympatico.ca> wrote in message
news:998aee44-5f4c-4e62-8467-fcc772b0a6fe@m4g2000vbn.googlegroups.com...
On Feb 11, 9:05 am, default <defa...@defaulter.net> wrote:
On Tue, 9 Feb 2010 12:36:01 -0800 (PST), trickyrick

ri...@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.
--

Thanks guys Then I take it that an Ion generator will make a
difference do you think this one will do
or should I look for something bigger
http://store.qkits.com/moreinfo.cfm/QK57

I don't think an ion generator will make enough difference for the money.


Why not use an old crt monitor or tv as primary voltage source?
Click to expand...
 
On Fri, 12 Feb 2010 06:47:44 -0800 (PST), trickyrick
<rickj@sympatico.ca> wrote:

On Feb 11, 9:05 am, default <defa...@defaulter.net> wrote:
On Tue, 9 Feb 2010 12:36:01 -0800 (PST), trickyrick

ri...@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.
--

Thanks guys Then I take it that an Ion generator will make a
difference do you think this one will do
or should I look for something bigger http://store.qkits.com/moreinfo.cfm/QK57
Click to expand...
Sure that would work. The current output of the multiplier can be
increased by increasing the capacity of the caps - the diodes are
usually just loafing along at a few micro amps.

That ion generator is mains operated and only isolated from the power
mains by the caps - so be safe.

The voltage will increase but is still limited by the size and shape
of the collector. What increases more dramatically is the ability to
charge up again after a discharge (or the current output) and it will
compensate for some of the losses to corona and humidity.

The current output of the ion generator can be predicted based on the
cap size - probably from the capacitive reactance of the (series) caps
- but there are some sites with information on that if you search.

check out:
http://www.coe.ufrj.br/~acmq/myvdg.html
The excitation system for the machine can be built in many ways. There
is the original, and best, using an electronic excitator to spray
charge in the belt, and many other possibilities, that can be
identified with the charging systems of the classic friction and
influence machines. This picture shows some of the possibilities.
--
 
On Fri, 12 Feb 2010 06:47:44 -0800 (PST), trickyrick
<rickj@sympatico.ca> wrote:

On Feb 11, 9:05 am, default <defa...@defaulter.net> wrote:
On Tue, 9 Feb 2010 12:36:01 -0800 (PST), trickyrick

ri...@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.
--

Thanks guys Then I take it that an Ion generator will make a
difference do you think this one will do
or should I look for something bigger http://store.qkits.com/moreinfo.cfm/QK57
Click to expand...
PS bear in mind - the ion generator should have the same polarity as
the terminal it will be charging . . .
--
 
On Tue, 09 Feb 2010 12:36:01 -0800, trickyrick 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
Click to expand...
A web search with the correct spelling may help " Van De Graaf".

--
www.wescottdesign.com
 
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