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4hv.org :: Forums :: Projects
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Fully Enclosed Jacob's Ladder

1 2 3 
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skmetal7
Wed Mar 01 2006, 04:17AM Print
skmetal7 Registered Member #101 Joined: Thu Feb 09 2006, 08:12PM
Location: Wisconsin
Posts: 41
So I am almost finished with my project, with my reworked ZVS driver, I get about 1" acrs, which is fine for this Jackob's Ladder, and i want my flyback to last. Ok, enough with the chit-chat, i know you want to see some pics. (This thing is really hard to take pics of)

The front:

1141183916 101 FT0 Cool 054


Control Panel (for safety, there's a key):

1141184794 101 FT0 Cool 070


1141186471 101 FT0 Cool 072


The ZVS Driver:
1141184862 101 FT0 Cool 066


The flyback:

1141184984 101 FT0 Cool 058


Sides:

1141185109 101 FT0 Cool 046


1141185202 101 FT0 Cool 052


1141185315 101 FT0 Cool 054


Terminal Blocks:

1141185413 101 FT0 Cool 064

1141185413 101 FT0 Cool 065


Top:

1141185507 101 FT0 Cool 059


Finally...IT LIVES!!:
http://media.putfile.com/Jacobs-ladder_on

One question, should i be worried about the build up of ozone in the plexiglass tube? it has a lid on it, with some holes.
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...
Wed Mar 01 2006, 04:29AM
... Registered Member #56 Joined: Thu Feb 09 2006, 05:02AM
Location: Southern Califorina, USA
Posts: 2445
looks nice, but I think you need a bigger power cord cheesey

I wouldn't worry about the ozone; unless you start to see the plastic turning brown... Most professional jl displays I have seen are in an enclosed plastic box...
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Mike
Wed Mar 01 2006, 05:17AM
Mike Registered Member #58 Joined: Thu Feb 09 2006, 05:40AM
Location: Tri-Cities, Washington, US
Posts: 317
lol nice double post! :P
But yeh its quite nice and neat, are you using a ZVS Driver or a fullbridge or what?
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skmetal7
Wed Mar 01 2006, 06:14AM
skmetal7 Registered Member #101 Joined: Thu Feb 09 2006, 08:12PM
Location: Wisconsin
Posts: 41
... wrote ...

... I think you need a bigger power cord cheesey ...


very funny... tongue , it was the only one i could find, and at the time, i thought i was going to use an NST, but thanks to this forum i dont have to deal with one of thoes big suckers cheesey

Mike: its the ZVS driver
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kalenedrael
Wed Mar 01 2006, 06:20AM
kalenedrael Registered Member #5 Joined: Thu Feb 02 2006, 04:18AM
Location:
Posts: 14
I would worry about the plastic lid at the top of the ladder. More clearance would be desirable as that plastic would tend to receive a lot of hot air from the ladder itself. Secondly, Jacobs ladders generate heat anyway and ventilation would be best; you also get to hear the sound from it that way.
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Hazmatt_(The Underdog)
Wed Mar 01 2006, 06:58AM
Hazmatt_(The Underdog) Registered Member #135 Joined: Sat Feb 11 2006, 12:06AM
Location: Anywhere is fine
Posts: 1735
I've been meaning to do similar. I've had a 12" OD lexan tube for ages now and still haven't really put it to use. Finishing projects is really a blight for me.

Present plan: Make an 8' tall oak almost-grandfather clock-ish JL at 500W+ and glass front with mirror behind. TV remote to operate, point and press button and it arcs. It will have some nice ceramic standoffs to secure the electrodes too, its just hard finding 3/16" x 8' stainless rod for me.
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...
Wed Mar 01 2006, 03:10PM
... Registered Member #56 Joined: Thu Feb 09 2006, 05:02AM
Location: Southern Califorina, USA
Posts: 2445
not to get too for off topic, but as far as finding 8' long electrodes; could you use ss pipe?
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Hazmatt_(The Underdog)
Wed Mar 01 2006, 07:02PM
Hazmatt_(The Underdog) Registered Member #135 Joined: Sat Feb 11 2006, 12:06AM
Location: Anywhere is fine
Posts: 1735
sure if its straight
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skmetal7
Wed Mar 01 2006, 09:46PM
skmetal7 Registered Member #101 Joined: Thu Feb 09 2006, 08:12PM
Location: Wisconsin
Posts: 41
how would you stabalise the electrodes? 8' at 3/16" O.D. they would wobble like crazy, just from the h.v. alone, any kind of stabalisers coming off them would disrupt the arc.

well anyway, i ran it today for ~30 sec and the diodes got extremely hot, they are on a heat sink and a fan blows right on them

hazmatt: http://www.metalexpress.net/cgi-bin/index.pl?mod=catalog&ac=acDisProdList&material=Stainless%20Steel&form=Round&cat=304&min=0&max=0&sid=1b766461eece8e6029727d411635db34#
$10.34 for 96"(8')
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Hazmatt_(The Underdog)
Wed Mar 01 2006, 11:05PM
Hazmatt_(The Underdog) Registered Member #135 Joined: Sat Feb 11 2006, 12:06AM
Location: Anywhere is fine
Posts: 1735
neat!
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