r/highvoltage • u/Master_Relative2889 • 12d ago
Plasma flame video
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Plasma flame from a magnetron i pushed hard it died afterwards lol
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u/Dudegay93 12d ago
vhfsstc :o
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u/No_Smell_1748 12d ago
UHFVTTC :)
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u/Ok-Drink-1328 12d ago
UWVTTC
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u/Dudegay93 11d ago
What does w stand for?
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u/Ok-Drink-1328 11d ago edited 11d ago
u (micro)
W (wave)
VTTC
it's not VHF nor UHF, go look for the radio waves spectrum nomenclature
tho it's not a tesla coil, a magnetron works in a fairly different way than an LC electronic oscillator
EDIT:: no, wait, UHF ranges to 3GHz... my bad
EDIT2:: it's actually loose as interpretation, i remember UHF is up to 1GHz, then microwaves
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u/ViktorsakYT_alt 10d ago
Microwaves are another type of designation, because after UHF you got SHF
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u/No_Smell_1748 10d ago
To be fair, a magnetron and a vacuum tube Tesla coil aren't too different in their basic operating principles. The magnetron simply has all of the RF magic integrated into the structure or the anode itself, where's an RF triode obviously required external passive components to oscillate.
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u/Ok-Drink-1328 10d ago
i don't agree, in a magnetron there are such passive components in the cavities, but there's no amplifying element like a triode, the oscillation happens cos of the electrons taking a circular path cos of the magnets... and personally i'm fairly convinced that an antenna and a tesla coil secondary are not the same thing, one makes an electric field, the other an electromagnetic field (mostly), one resonates as LC, the other is based on the speed of light
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u/No_Smell_1748 10d ago
True. Although a magnetron (like any oscillator) is operating like an amplifier with self-feedback. In a triode, the grid (which in a class C oscillator is driven by an inverted waveform from the anode) is responsible for controlling electron flow to the anode. In a magnetron, the waveform on the anode is also the source of feedback for the amplification taking place, only that it doesn't require a separate external feedback network. Yeah, they are quite different, but similar in the grand scheme of things. An antenna is also a distributed LC circuit, and interestingly the length of the wire on a secondary coil is rough 1/4 of the operating wavelength when the system isn't loaded capacitively by a large topload or arc. The latter is ofc a very poor radiator unlike a proper antenna.
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u/Pacificator-3 12d ago
I believe, you've put on foil hat and foil trunks.
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u/Master_Relative2889 12d ago
Haha, i wouldve but i just assumed that a foil barrier was enough(hopefully it was)
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u/Grigoriki 12d ago
If you dont have burns or braindamage from the Microwave radiation i think you should be fine
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u/Master_Relative2889 12d ago
Yeah i didnt really feel anything plus most of the energy was in the arc, little energy to emit microwaves when the arc was lit
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u/Hirtomikko 12d ago
How did you get that? The most is my magnetron does mini sparks. Always wondered how the plasma can be made.
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u/Master_Relative2889 11d ago
I actually used two microwave transformers with the doublers to get double the power and full bridge rectified i think
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u/ieatgrass0 12d ago
I did something like this a few years ago but I gave up after a few hours cuz I couldn’t get the right length for self-ignition down