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Forums
4hv.org :: Forums :: High Voltage
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simple high power non zvs duel flyback driver

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jake3085
Mon May 14 2012, 03:09PM
jake3085 Registered Member #4800 Joined: Wed May 09 2012, 04:23AM
Location:
Posts: 39
cbfull wrote ...

Destroyer of mosfets wrote ...

2n2222 is that a typo ?
OMG that's not right! No way that little plastic transistor could handle the power. It has been a while sincle I messed with that circuit. I can't remember which transistor I used, it was very similar to the 2N3055 but handled much more power. This is going to bug me now until I can figure out which one it was.

Could it have been a tip3055? Lol
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jake3085
Mon May 14 2012, 03:12PM
jake3085 Registered Member #4800 Joined: Wed May 09 2012, 04:23AM
Location:
Posts: 39
cbfull wrote ...

This has been one of my favorite circuits as well. I used 2N2222 transistors, they really handled the power.

It's been a while since I've been able to tinker with my HV electronics, but I'm hoping to get back into it again before too long.

Wow they are small transistors what was the input and did it heat up much?
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cbfull
Tue May 15 2012, 06:30PM
cbfull Registered Member #187 Joined: Thu Feb 16 2006, 02:54PM
Location: Central Ohio
Posts: 140
 		It wasn't the 2N2222, it was one of the higher powered MJ's.

My mistake. Sorry for the confusion.
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kimbomba
Wed May 16 2012, 02:18AM
kimbomba Registered Member #3854 Joined: Fri Apr 29 2011, 03:45AM
Location: Mexico
Posts: 95
 		I just assembled the circuit using mje13003's from a CFL board. Used 7+7 turns and 3 for feedback wound
on the inductor of the same CFL. Works well, at 12 volts produces about 550 volts. BTW, the diodes and
toroid also came from the CFL :D, so you can buid a nice PS for small cap charging for almost nothing.
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jake3085
Thu May 17 2012, 12:03AM
jake3085 Registered Member #4800 Joined: Wed May 09 2012, 04:23AM
Location:
Posts: 39
cbfull wrote ...

It wasn't the 2N2222, it was one of the higher powered MJ's.

My mistake. Sorry for the confusion.

thats okay though the 2n2222 would be good for a little ccfl driver or something like that
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jake3085
Thu May 17 2012, 12:11AM
jake3085 Registered Member #4800 Joined: Wed May 09 2012, 04:23AM
Location:
Posts: 39
kimbomba wrote ...

I just assembled the circuit using mje13003's from a CFL board. Used 7+7 turns and 3 for feedback wound
on the inductor of the same CFL. Works well, at 12 volts produces about 550 volts. BTW, the diodes and
toroid also came from the CFL :D, so you can buid a nice PS for small cap charging for almost nothing.

wow nice. cfl driver for parts isnt a bad idea u should make a tutorial on utube for beginers i remember opening up a cfl light and only remember there being 1 transistor but that was ages ago :)
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Platinum
Thu May 17 2012, 10:55AM
Platinum Registered Member #3926 Joined: Fri Jun 03 2011, 08:32PM
Location: UK.
Posts: 525
 		Not a bad circuit I managed to get it going with a CFL board as kimbomba did, I have a bin full of them ahah

It was pretty hard but that's because of my soldering iron.
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jake3085
Wed May 30 2012, 03:00AM
jake3085 Registered Member #4800 Joined: Wed May 09 2012, 04:23AM
Location:
Posts: 39
Platinum wrote ...

Not a bad circuit I managed to get it going with a CFL board as kimbomba did, I have a bin full of them ahah

It was pretty hard but that's because of my soldering iron.

nice how big were the arcs and what was the input voltage? sorry for the late reply:)
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kimbomba
Thu May 31 2012, 02:46AM
kimbomba Registered Member #3854 Joined: Fri Apr 29 2011, 03:45AM
Location: Mexico
Posts: 95
 		In my case there were no arcs at all since the output voltage was less than 1000 volts.
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brandon3055
Thu May 31 2012, 03:47AM
brandon3055 Registered Member #4548 Joined: Mon Apr 23 2012, 03:52AM
Location: tasmania
Posts: 271
 		In response to your latest video if the cap you removed was the one across the primery that sets the resinent frequency so removing it will significantly increase the frequency (and increase the pitch) and the bridge rectifier can only handle its maximum rated current with a resonobly large heat sink looks cool tho it looks as powerful as my zvs driver exept min uses 1 flyback I wonder how powerful it would be with 2
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