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Registered Member #3414
Joined: Sun Nov 14 2010, 05:05PM
Location: UK
Posts: 4245
Alchemist wrote ...
bwang wrote ...
I doubt there's any magic to winding tiny HV transformers; just use lots and lots of thin wire.
Even considering the RF aspect of plasma display driving? I've always thought of flybacks as a "special kind of Tesla Coil" since their voltage rise is greater than the ratio of turns. I know how finicky some Tesla coils can be to get the tuning and everything correct, so I'd think winding a flyback might require some sort of extra planning as well. Am I wrong? Is it really as simple as just winding a small HV transformer?
The trick with flybacks (apart from the usual capacitance/inductance problems) is getting the core gap correct.
There are formulae online (on manufacturers' websites, etc) but you need to be better at maths than I am to be confident that you get it right.
If you are using 'E' cores, or similar, the gap has to be ground, so trial and error isn't a straightforward process.
'C' cores can be gapped using plastic sheet, etc. so if to plan to find the correct core gap be trial and error, I'd suggest using 'C' cores.
Registered Member #2463
Joined: Wed Nov 11 2009, 03:49AM
Location:
Posts: 1546
It seems that the electrification of the universe was accomplished without the winding of a single coil, and that most nuclear woes today started with mischief unfurled with spark-tinkering.
Why not shine your intellect onto ways of condensing electrical activity using just force and insulators?
Registered Member #2919
Joined: Fri Jun 11 2010, 06:30PM
Location: Cambridge, MA
Posts: 652
Alchemist wrote ...
bwang wrote ...
I doubt there's any magic to winding tiny HV transformers; just use lots and lots of thin wire.
Even considering the RF aspect of plasma display driving? I've always thought of flybacks as a "special kind of Tesla Coil" since their voltage rise is greater than the ratio of turns. I know how finicky some Tesla coils can be to get the tuning and everything correct, so I'd think winding a flyback might require some sort of extra planning as well. Am I wrong? Is it really as simple as just winding a small HV transformer?
If you want to make cute little plasma displays in globes filled with assorted gases, voltage is not all that important; it turns out that it's really easy to get arc discharge, glowing colored streamers, and the like in noble gas fills
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hand-winding a flyback
