Flyback tesla coil
kv, Tue Jul 10 2007, 05:46AMhi all, since i have got my flyback working, i was wanting to make a tesla coil with it. i have seen some vids on youtube of them, with impressive results. i have wound a secondary that is on pvc pipe and it's diameter is 50mm and it is 160mm tall. i have about 10 10kv 100pf ceramic caps. does this sound like a workable tesla coil?
Re: Flyback tesla coil
Munkey, Tue Jul 10 2007, 06:39AM
I made a small flyback Tesla coil, see here:
With no calculations and it produced a little corona, thats all.
Munkey, Tue Jul 10 2007, 06:39AM
I made a small flyback Tesla coil, see here:
With no calculations and it produced a little corona, thats all.Re: Flyback tesla coil
kv, Tue Jul 10 2007, 07:59AM
ah, i see, you used a syringe for the secondary. maybe if you made a bigger secondary you would get better results? anyone thing my secondary, capacitors and flyback ideas work?
kv, Tue Jul 10 2007, 07:59AM
ah, i see, you used a syringe for the secondary. maybe if you made a bigger secondary you would get better results? anyone thing my secondary, capacitors and flyback ideas work?
Re: Flyback tesla coil
Munkey, Tue Jul 10 2007, 12:24PM
Well, I wound a smaller secondary but with much thinner wire so it has about 800 turns as apposed to about 200 and the performance was much worse.
Im no expert, but I think your idea will work.
Munkey, Tue Jul 10 2007, 12:24PM
Well, I wound a smaller secondary but with much thinner wire so it has about 800 turns as apposed to about 200 and the performance was much worse.
Im no expert, but I think your idea will work.
Re: Flyback tesla coil
Danielle, Tue Jul 10 2007, 04:47PM
I built a small SG Tesla coil powered by a zvs fly back and got 6" arcs for caps take the HV caps from 10 computer monitors and make a mmc for around 10KV and .02uf or some bottle caps for the secondary use 1" by 5" and primary cu wire here is mine it takes some tunning though and you do want a saifty gap with a powerful fan.
Danielle, Tue Jul 10 2007, 04:47PM
I built a small SG Tesla coil powered by a zvs fly back and got 6" arcs for caps take the HV caps from 10 computer monitors and make a mmc for around 10KV and .02uf or some bottle caps for the secondary use 1" by 5" and primary cu wire here is mine it takes some tunning though and you do want a saifty gap with a powerful fan.
Re: Flyback tesla coil
kv, Tue Jul 10 2007, 10:32PM
hmmmm, if all you guys are just getting carona, how does this guy do this? http://youtube.com/watch?v=66WuyHIp7z4
kv, Tue Jul 10 2007, 10:32PM
hmmmm, if all you guys are just getting carona, how does this guy do this? http://youtube.com/watch?v=66WuyHIp7z4
Re: Flyback tesla coil
Danielle, Tue Jul 10 2007, 11:21PM
mine gets better results than that one I do not just get carona
Danielle, Tue Jul 10 2007, 11:21PM
mine gets better results than that one I do not just get carona
Re: Flyback tesla coil
kv, Tue Jul 10 2007, 11:27PM
ok so you do get streamers. so my 10kv 100pf caps, flyback and secondary that i posted above would work?
kv, Tue Jul 10 2007, 11:27PM
ok so you do get streamers. so my 10kv 100pf caps, flyback and secondary that i posted above would work?
Re: Flyback tesla coil
Danielle, Tue Jul 10 2007, 11:28PM
yes but you should run some simulations to tune it you get much better results I only got corona until I tuned mine
Danielle, Tue Jul 10 2007, 11:28PM
yes but you should run some simulations to tune it you get much better results I only got corona until I tuned mine
Re: Flyback tesla coil
Bauerb2, Sat Sept 01 2007, 02:26AM
Hi all. i am new to this site and this is my first post.
Anyway...
I have built 2 sgtc's so far and they both use a flyback hv source. Im surprised on how well my second one performs. it uses a 6" sec (1-1/8"dia) and an 8 turn tapped flat spiral primary. I use a small ~2" dia "doorknob" for the toroid. With no target ground, it will produce some very nice 5" streamers. When there is a target i get about 7-8" arcs that get kind of hot. It uses an adjustable rotary SG with 4x 590pF 30kV caps. the flyback driver is a half bridge circuit found here http://www.scopeboy.com/tesla/flyback.html (555 driven one 2nd from bottom. Input power during a run is about 280watts. The only advantage i have is that i have a huge flyback xformer, but with the halfbridge i got almost the same results with a 'normal', smaller flyback.
http://www.youtube.com/watch?v=xUpGH7kSeFs < check it. i have since replaced this secondary with one of equal size, but thinner wire (and no breaks
) and have gotten longer streamers than in the video.
i think it all depends on how your driving your flyback. I've been through 3 different drivers and this Hbridge seems to work the best. i want to see someone use a ZVS driver like you see on youtube with those fat arcs to drive a coil. that would be nice.
good luck.
Bauerb2, Sat Sept 01 2007, 02:26AM
Hi all. i am new to this site and this is my first post.
Anyway...
I have built 2 sgtc's so far and they both use a flyback hv source. Im surprised on how well my second one performs. it uses a 6" sec (1-1/8"dia) and an 8 turn tapped flat spiral primary. I use a small ~2" dia "doorknob" for the toroid. With no target ground, it will produce some very nice 5" streamers. When there is a target i get about 7-8" arcs that get kind of hot. It uses an adjustable rotary SG with 4x 590pF 30kV caps. the flyback driver is a half bridge circuit found here http://www.scopeboy.com/tesla/flyback.html (555 driven one 2nd from bottom. Input power during a run is about 280watts. The only advantage i have is that i have a huge flyback xformer, but with the halfbridge i got almost the same results with a 'normal', smaller flyback.
http://www.youtube.com/watch?v=xUpGH7kSeFs < check it. i have since replaced this secondary with one of equal size, but thinner wire (and no breaks
) and have gotten longer streamers than in the video. i think it all depends on how your driving your flyback. I've been through 3 different drivers and this Hbridge seems to work the best. i want to see someone use a ZVS driver like you see on youtube with those fat arcs to drive a coil. that would be nice.
good luck.
Re: Flyback tesla coil
Coronafix, Sat Sept 01 2007, 02:46AM
That is awesome!!!
Very descent output for a flyback driven TC.
I think you should have started a new thread though, it's worthy of its own.
What are the two wound coils for on the secondary side of the flyback?
Is that for current limiting?
Nice little rotary too.
Well done and welcome.
Coronafix, Sat Sept 01 2007, 02:46AM
That is awesome!!!
Very descent output for a flyback driven TC.
I think you should have started a new thread though, it's worthy of its own.
What are the two wound coils for on the secondary side of the flyback?
Is that for current limiting?
Nice little rotary too.
Well done and welcome.
Re: Flyback tesla coil
sparky, Sat Sept 01 2007, 02:53AM
Wow...that was impressive! I really enjoyed the video. By the way, nice craftsmanship! Great work!
sparky, Sat Sept 01 2007, 02:53AM
Wow...that was impressive! I really enjoyed the video. By the way, nice craftsmanship! Great work!
Re: Flyback tesla coil
Bauerb2, Sat Sept 01 2007, 03:21AM
Thanks for the comments!
first off those two coils on the flyback secondary are supposed to be Rf chokes. Early in this construction, i hadn't a clue what they were for (longggg time ago), but i now know that they actually work. After a quick test with my $30 o-scope to check their importance, i found they stop a lot of high freq from going back into the driver circuit, which reduced some heating in the fets.
I think i'll start a new thread if thats ok. i've never posted anything on a forum in my life. hehe.
Bauerb2, Sat Sept 01 2007, 03:21AM
Thanks for the comments!
first off those two coils on the flyback secondary are supposed to be Rf chokes. Early in this construction, i hadn't a clue what they were for (longggg time ago), but i now know that they actually work. After a quick test with my $30 o-scope to check their importance, i found they stop a lot of high freq from going back into the driver circuit, which reduced some heating in the fets.
I think i'll start a new thread if thats ok. i've never posted anything on a forum in my life. hehe.
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