is the value of the resonance caps critical? i have about a dozen MOC that vary from about .65uf to 1.06 uf. can i just use what ever? correct me if im wrong, but it would be 2 parallel in series with 2 parallel in series with 2 parallel? thank you for answering al my questions!
@lokeycmos my caps are all around 1uF, if you live in "60Hz land" you might be OK with smaller caps (and the performance might differ too :-P ). Yes the caps are 2 in parallel x3 in series.
@lokeycmos I don't have the MOT in that state anymore, it has been built into another "arcing machine" I'm sorry... but you simply saw off the welds on the "I" part of the EI core and remove it.
@lokeycmos the two MOTs have primaries in parallel and secondaries in series, on the third one I cut off the "I" part of the core and connected its secondary in series too (primary disconnected), and there are 6 resonant caps.
I would have thought the sand would have been more resistive. I know that once the arc starts it melts the sand, making a lower resistance path, but i would have figured it would be like... Drawing arcs through cement. Much smaller arcs, from high resistance.
I dunno if the sand becomes conductive, but whats main is that it gets really hot, and it increases the "emmision" of the "electrode" so the arc is not as easy to extinguish.
The current passing through the ionised air heats it up to flame-like appearance due to ohmic heating. There is a bit of burning (salts?) from the sand, which make it orange and more fierce.
ignite hydrogen? I've done some experiments with combustion of vapors liberated from solid such as paper, nut shells and some others. What some people (even firefighters) would call smoke is actually a combustable mixture that
ignites when at certain temps and concentrations. Could ionized air or any other latent vapors have such a threshold and get cought up in the arc you produce?
is the value of the resonance caps critical? i have about a dozen MOC that vary from about .65uf to 1.06 uf. can i just use what ever? correct me if im wrong, but it would be 2 parallel in series with 2 parallel in series with 2 parallel? thank you for answering al my questions!
lokeycmos 1 year ago
@lokeycmos my caps are all around 1uF, if you live in "60Hz land" you might be OK with smaller caps (and the performance might differ too :-P ). Yes the caps are 2 in parallel x3 in series.
strangeexsitence 1 year ago
@lokeycmos woops I forgot to log out of my other profile :D
strangeexsitence 1 year ago
any chance you could post a pic or video of the modified mot? Thank you much! :)
lokeycmos 1 year ago
@lokeycmos I don't have the MOT in that state anymore, it has been built into another "arcing machine" I'm sorry... but you simply saw off the welds on the "I" part of the EI core and remove it.
strangeexsitence 1 year ago
so is the modified mot used as a ballast? from my experience, a ballast cut the output by a lot.
lokeycmos 1 year ago
@lokeycmos No, it helps the resonance, makes the arcs draw out further than with just 2mots 4caps.
strangeexsitence 1 year ago
how do you have the primaries and secondaries hooked up on your 3 MOTs? what do you mean by one is "modified"?
lokeycmos 1 year ago
@lokeycmos the two MOTs have primaries in parallel and secondaries in series, on the third one I cut off the "I" part of the core and connected its secondary in series too (primary disconnected), and there are 6 resonant caps.
strangeexsitence 1 year ago
just to let you know YOUR MOTS ARE HUGE
juniortore 2 years ago
That is sketchy as F*** How many amps are going through the arc?
Knowlagable 2 years ago
Around 1.7 amps
jmartis2 2 years ago
have you tryed to make fulgurite (frozen lightning in sand) ?
hugestomper 2 years ago
Yes I have
jmartis2 2 years ago
nice lol huge arcs
deano509 2 years ago
I would have thought the sand would have been more resistive. I know that once the arc starts it melts the sand, making a lower resistance path, but i would have figured it would be like... Drawing arcs through cement. Much smaller arcs, from high resistance.
Anyway, nice setup/job :D
triggerhappy77707 2 years ago
I dunno if the sand becomes conductive, but whats main is that it gets really hot, and it increases the "emmision" of the "electrode" so the arc is not as easy to extinguish.
jmartis2 2 years ago
Nice work. Have a Microwave not in use that might give me some arcs. Also a 15kV photocopier transformer that make a nice jacobs ladder.
goodsy75 3 years ago
Pardon the observation but it looks like
you've got flames and arcs. What is fueling those flames?
dahlenaz07 3 years ago
The current passing through the ionised air heats it up to flame-like appearance due to ohmic heating. There is a bit of burning (salts?) from the sand, which make it orange and more fierce.
jmartis2 3 years ago
Are these temperatures you speak of in ohmic
heating getting close to those needed to
ignite hydrogen? I've done some experiments with combustion of vapors liberated from solid such as paper, nut shells and some others. What some people (even firefighters) would call smoke is actually a combustable mixture that
ignites when at certain temps and concentrations. Could ionized air or any other latent vapors have such a threshold and get cought up in the arc you produce?
dahlenaz07 3 years ago
holy shit dude! your the God of arcs!! lol
Gintaras 3 years ago
measure the temperature :D
Ztuibyman 3 years ago
This looks like lots of fun. What is the power source?
bobdavis321 3 years ago
The thing runs on two phase power (400V) pulling up to 15 amps. There are 3 microwave transformers, one modified, and a 0.6uF 15kV capacitor bank.
jmartis2 3 years ago
You have upgraded to a better electric power source as I see :-)
daecwzcz 3 years ago
Cool vid!!!! Does it melt the sand?
toomyg155 3 years ago
Yes it does, it creates small "sand balls" and molten sand sometimes shoots out :P I will try to make some fulgurites soon
jmartis2 3 years ago
yay! more sand!
holycrapapie 3 years ago