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Registered Member #135
Joined: Sat Feb 11 2006, 12:06AM
Location: Anywhere is fine
Posts: 1735
I might give that ZVS concept a chance now that I've got my early B-day gift...CORES! YAY!
MMM...and they're big-uns too :) Now I have a total of 5 sets. Maybe with the right gap, I can win the contest :P, oh wait, forgot....no prize....oh well, I guess then the prize will have to be a fat flame which is good enough for me!
Registered Member #152
Joined: Sun Feb 12 2006, 03:36PM
Location: Czech Rep.
Posts: 3384
What happened to this thread???
Here's my handwound flyback outputting nearly 30kV with 1000 turns on secondary. It looks horrible, I know, the tape is just holding the core together...
Registered Member #89
Joined: Thu Feb 09 2006, 02:40PM
Location: Zadar, Croatia
Posts: 3145
Yep thread fell asleep, for handwound its maybe best to use PVC insulated vire instead of varnished, interturn voltages can be much higher and entire secondary far more resistant. Only problem is finding large enough quantity of such wire...
As kolas owned us in this particular contest nobody wants to compete.. Joking, just I have only one huge flyback driven with feddback$transistor (here 2SB863, they were silly cheap but good)
Arc can be stretched about 2,5cm, but current is very huge so it melts steel wool and ignites it, it bursts few seconds after in sparkles...
Interesting but spark is not so long and its tricky to get a good picture, needs to be improved...
I would like to stick to feedback technique, just maybe add one more transistor in darlington to limit feedback current and resistor overheating, or maybe two transistors in antiparalell...
Registered Member #102
Joined: Thu Feb 09 2006, 08:15PM
Location: Raleigh, NC
Posts: 169
i did in fact use a resonat (inthe ball park) cap in series
frequecy is extreamly important! that's the main set back in the Zvs circuit. i was running this flyback around 150-200khz! so im actually using flyback AND resonat mode to generate such voltages
Registered Member #102
Joined: Thu Feb 09 2006, 08:15PM
Location: Raleigh, NC
Posts: 169
hehe bring it on man, put a much wattage in as you need
ill be winding myself a submersable ac flyback i dont care if you guys are competeing. i wanna see you results of whatever you accomplish think of this as a post you flybacks thread
Registered Member #101
Joined: Thu Feb 09 2006, 08:12PM
Location: Wisconsin
Posts: 41
i dont know if this qualifies as a flyback, but it puts out some killer arcs at 43v input. its from an air cleaner. i have no idea what input voltage it really is.
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Flyback Arc Contest
