X-Ray machine transformer demo

[mimic58]

how much did the transformer cost you?

[jmartis2]

this looks more like 30kV or less, 60kV would fire over distance greater than 4" (10cm) and you would hear a f*ckin loud corona crackle! :D

[kalebman5000]

yeah ur right i gotta 9kv supply and it does the same and this is kinda the guide i go by:

voltage = were it starts

current = were it stretches too

its really more of a mix of the two, but its just a guide :)

[jmartis2]

I have worked out this arc length formula:

L=V*sqrt(I)*4

where L arc is length in cm

V is open circuit voltage in KV

I is short circuit current in amps

only it does not seem to work on very high voltages (30KV+) or very low currents

[kalebman5000]

yeah electricity is kinda weird, like every 10kv higher, everything changes. idk, you just gotta estimate i guess

thats a smart formula though, it took me a minute to understand it (not very good at math)

[MrGoogfan]

@jmartis2

actually, 10kV gives a roughly 1cm spark. So 60kV is only 6cm

[jmartis2]

@MrGoogfan 60kV has 60*1.41= cca 85kV peak voltage, which according to this rule would fire at 8.5cm. But with such high voltages pre-ionisation takes place, and the spark can jump further.

However the voltage says nothing on how far you can draw out the spark, eg. a MOT has only 2kV but you can draw 12cm arcs out of it.

[MrGoogfan]

@jmartis2

I said spark, not arc. Sparks are instantaneous, arcs are drawn out.

Pre-ionization does not really have any effect, because ionized o2 immediately turns to neutral, yet unstable 03.

[jmartis2]

@MrGoogfan Then how could the SIBNIIE Marx generator have made a 70-meter spark with just 5MV? I don't want to argue, but 100kV will surely jump much further than 10cm with pointy electrodes (wires etc.)

[MrGoogfan]

Well, my 100kv will only jump 11 cm with 1" ball electrodes.

[jmartis2]

@MrGoogfan That sounds right. How far does it jump with wire/needle electrodes?

[MrGoogfan]

@jmartis2

about 14-15cm

[genmaximus110]

I have a 150Kv x-ray machine that I had to test with the tube out. At 150kv the spark was explosive; if you try the full 100Kv be prepared. I was told that this is hard on the transformer so I won't be trying it again, since I need the x-ray machine to work.

[codemsan]

DO IT, DO IT!!! go to 100kv! i would love to see that much voltage cocidering your running at half the voltage with monster arcs!!!

[rgsgww]

rewind it lol and put some cooling

[jovicakluk]

why the fuck would he rewind it you idiot

[rgsgww]

I think your the idiot.....if your so smart I think you would know why.

[jovicakluk]

do you even know how long it would take to rewind this you idiot

[rgsgww]

yes...but its worth it

[ValanceElectron]

How much current?

[Flippy2007]

everbody palys with high voltage try to work with it build some like a laser with high voltage

[johndear18]

i have one i got in the junk yard and pumped it up to 89kv (there was a small spark gap on it so it may of lowerd the voltage a little) but i held it with a 3' peace of pvc and it is a but ferther than that if you do it as slowly as u did but if you jult it it goes far

[mvogt]

The 100kV setup would probably be even less dangerous, because with the same input current, the output current would be about a half. Guess the current is still non lethal when the input current is less than 10A.

[mikeandtiff]

Cool toy! nice arcs

[UpcomingJedi]

LICK IT!!

[xildavar]

dude you're crazy if you go that high O_O