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4hv.org :: Forums :: High Voltage
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BEST FLYBACK DRIVER

Move Thread LAN_403
U4R1A
Tue Dec 21 2010, 01:38AM
U4R1A Registered Member #3505 Joined: Sun Dec 12 2010, 06:03AM
Location: Albuquerque NM
Posts: 108
@Quick he asked for the most powerful one not the best nor the safest. I answer most questions with the facts(unless its obvious the kid is 13/retarded) and skip the safety tips. I let Darwin sort out the unsafe.

@Fabi I uploaded another vid with the ZVS powering a Jacob's ladder http://www.youtube.com/watch?v=j2lsAE88AoI
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Fabi
Tue Dec 21 2010, 08:07AM
Fabi Registered Member #3510 Joined: Mon Dec 13 2010, 08:31AM
Location: western germany
Posts: 19
yeah thanks for your support

Dont worry about my supply.... 60V@30A / 30V@60A (1.8 kW) max. and a modded MOT wink
@quick only in the title i write best... actually i mean the most powerful one
That's the 'problem'
Those are both powerful drivers...

The Mazzili is a self-oscillating circuit --> finds 'automatically' the resonance (The best?) you can control the Voltage/current by the coil. It's quasi-resonant
The one who ubuntupokemonic posted is a 'manually' oscillating circuit --> you can control the Voltage/current by modify the resonance frequency by hand. IT'S REAL RESONANT
the prinzip is always the same--> All circuits drive the FBTat a defined frequency and _|-|_|-|_|-|_|-|_|-|_|-|_|-| like this wink (ZVS)

http://www.volny.cz/jmartis/qrv4_en_final.png
http://4hv.org/e107_plugins/forum/forum_viewtopic.php?49027.0 See Dr. Kilovolt's post(s)

Both circuits are by JM

I'm tryin to get something around 50-100 kV to drive my x-ray tube and it should provide few mA

The last one is driven @ 21kHz btw
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ubuntupokemoninc
Tue Dec 21 2010, 01:54PM
ubuntupokemoninc Banned on 1/22/2011 for repeated rule violations after multiple warnings.
Registered Member #3299 Joined: Sat Oct 09 2010, 08:11PM
Location: Bantown, USA
Posts: 220
Go with jans circuit hes a smart guy wink

but you need a good flyback or as soon as you try to draw an arc off of the flyback with that circuit, the flyback will make 1 wimpy little snap, game over you killed the flyback!

I also accomplished to drive my zvs driver at 70kv! Link2

I accomplished this with the inductor equaling about 230uh!

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Fabi
Tue Dec 21 2010, 05:34PM
Fabi Registered Member #3510 Joined: Mon Dec 13 2010, 08:31AM
Location: western germany
Posts: 19
Thats what i call an answer wink

I orered 10 different FBTs for 10€

I'm just working on a PCB layout...
I'm gonna try some other values and get the last volt out of that freakin flyback wink
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