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4hv.org :: Forums :: High Voltage
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Bored need some arcs

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Platinum
Wed Aug 29 2012, 09:50PM Print
Platinum Registered Member #3926 Joined: Fri Jun 03 2011, 08:32PM
Location: UK.
Posts: 525
I have't seen a decent arc in a few months, I really need to make another driver, but what I can make that is very simple besides the ZVS/55/3055 circuit, and it has to be easy (also not the halogen transformer), is there anyway I can use TFT monitor circuitry to drive a flyback?

Anyway if any of you understand that, I need arcs and they have to be very easy to make.
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Dr. Dark Current
Wed Aug 29 2012, 10:05PM
Dr. Dark Current Registered Member #152 Joined: Sun Feb 12 2006, 03:36PM
Location: Czech Rep.
Posts: 3384
MOT and a few caps. Easily a 30cm arc from one transformer, with a huge power draw cheesey
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Harry
Wed Aug 29 2012, 10:25PM
Harry Registered Member #4081 Joined: Wed Aug 31 2011, 06:40PM
Location: UK
Posts: 139
How about a camera flash circuit charging a small (1uF) film cap then through a gas discharge tube (Which, rather confusingly, has the acronym GDT) into a pulse transformer? Not high current but you can get 50 - 60 kV out of them. You can also give yourself a bit of a shock seeing as it's such low power cheesey
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Dri0m
Thu Aug 30 2012, 06:03AM
Dri0m Registered Member #4497 Joined: Thu Apr 19 2012, 12:53PM
Location: Behind you
Posts: 62
ZVS 50V in, 5+5turns, put DST(flyback) in oil, and you can get 15cm arcs

or if you get HUGE arcs, then this: Link2
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Shrad
Thu Aug 30 2012, 06:59AM
Shrad Registered Member #3215 Joined: Sun Sept 19 2010, 08:42PM
Location:
Posts: 780
get this and convert it into a dazer with a gas discharge tube and a CCFL transformer

Racquet
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zippotix
Thu Aug 30 2012, 12:11PM
zippotix Registered Member #5208 Joined: Thu Jun 07 2012, 06:12PM
Location:
Posts: 86
As DarkCurrent said, mot and few caps, I have only 2 and it gives really big arcs, when stretched upwards I would say it's about 25cm or even more. This thing is scary.
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GrantX
Thu Aug 30 2012, 01:19PM
GrantX Registered Member #4074 Joined: Mon Aug 29 2011, 06:58AM
Location: Australia
Posts: 335
Here ya go, 2 MOTs and 4 caps, simple yet stupidly dangerous. :)
The wimpy one on the left started smoking after this vid, haha.
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Antonio
Thu Aug 30 2012, 11:29PM
Antonio Registered Member #834 Joined: Tue Jun 12 2007, 10:57PM
Location: Brazil
Posts: 644
Shrad wrote ...

get this and convert it into a dazer with a gas discharge tube and a CCFL transformer

Racquet

Get several and connect them in series. Link2
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Harry
Thu Aug 30 2012, 11:44PM
Harry Registered Member #4081 Joined: Wed Aug 31 2011, 06:40PM
Location: UK
Posts: 139
That looks pretty good, better than I would have expected anyway. Maybe 20kV?
I once made a circuit similar to the 3055 one but with parts from only the monitor. It was awful.

What's wrong with the ZVS driver anyway? All you need is some MOSFETs and you can build the rest with parts from the monitor circuit board.
On a side note, I use a separate supply for the gate drive on my ZVS; it means I don't need zeners and I think it runs a little cooler. Can anyone see any advantages/disadvantages for separately powering the gates? Aside from needing 2 power supplies.
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