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Forums
4hv.org :: Forums :: High Voltage
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2 computer monitors

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Omicron
Mon Mar 20 2006, 09:34PM Print
Omicron Registered Member #131 Joined: Fri Feb 10 2006, 09:25PM
Location:
Posts: 185
It’s a good day! I just got and disassembled Very old computer monitors. I am thinking about things I could do with the flyback. All I could think of was Jacob’s ladder, life’s funny that way…
So any body have any ideas?

smile

Edit: Is there any use for the CRT?
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Marko
Mon Mar 20 2006, 10:04PM
Marko Registered Member #89 Joined: Thu Feb 09 2006, 02:40PM
Location: Zadar, Croatia
Posts: 3145
So you can power lifters, small to average SGTCs, pulse ignition coils, charge caps big and small,
jacobs ladders, etc.....
Hope you can find yourself some drivers smile

CRT can be used if undamaged but you must rebuild all its control circuits, deflection, drivers, keep the flyback and everything maybe that you can draw few lines around the screen.
Living monitor could make far better use!

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Sulaiman
Mon Mar 20 2006, 10:08PM
Sulaiman Registered Member #162 Joined: Mon Feb 13 2006, 10:25AM
Location: United Kingdom
Posts: 3140
There's a good ammount of copper wire in the de-gaussing coil
it's probably wrapped in tape and atached to the fat part of the tube.
There's enough for a TC secondary!
There's some thicker copper wire in the deflection yoke
enough for a TC primary.
The tube itself makes quite a good high voltage capacitor.
All you need is a spark gap to make a Tesla Coil.
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vasil
Mon Mar 20 2006, 10:11PM
vasil Registered Member #229 Joined: Tue Feb 21 2006, 07:33PM
Location: Romania
Posts: 506
The CRTs can be used as vacuum pumps.....if you have guts to make holes in them...

http://www.kronjaeger.com/hv/hv/exp/crt/
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Omicron
Mon Mar 20 2006, 10:11PM
Omicron Registered Member #131 Joined: Fri Feb 10 2006, 09:25PM
Location:
Posts: 185
I think form the CRT I will get the electron guns and coils.
The flybacks I am going to use to power the guns.
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vasil
Mon Mar 20 2006, 10:14PM
vasil Registered Member #229 Joined: Tue Feb 21 2006, 07:33PM
Location: Romania
Posts: 506
Electron guns are useless for a vacuum lower than 10^(-6) torr...it is hard to achieve at home.
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Marko
Mon Mar 20 2006, 10:14PM
Marko Registered Member #89 Joined: Thu Feb 09 2006, 02:40PM
Location: Zadar, Croatia
Posts: 3145
WIre from monitor/TV CRTs I found least usable for winding anything, it is most usually massively varnished and ripping it apart leaves wire without insulation.
WIre from relays etc. is far better for that.

CRT can have few bottle-cap capacitance and it would be similary lossy.

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Omicron
Mon Mar 20 2006, 10:18PM
Omicron Registered Member #131 Joined: Fri Feb 10 2006, 09:25PM
Location:
Posts: 185
Ahh, in that case I am going to build a single transistor flyback and join the arc contest!

I do have a 15 micron vacuum pump though but there is X-ray danger.
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vasil
Mon Mar 20 2006, 10:21PM
vasil Registered Member #229 Joined: Tue Feb 21 2006, 07:33PM
Location: Romania
Posts: 506
The discharge in the tubes has to be obscure to produce X-rays, so its hard vacuum. With gas trapped in the tubes you will never see X-rays. The atom- electrons collisions will not allow the electrons to gain enough energy to produce X-rays. You will not get dangerous X-rays from a luminiscent discharge.
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Omicron
Mon Mar 20 2006, 10:31PM
Omicron Registered Member #131 Joined: Fri Feb 10 2006, 09:25PM
Location:
Posts: 185
I think 15 micron is “Hard”
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