@a380rockerfan - Correct. However, as with most x-ray high voltage generators, this is simply the PEAK rating of the transformer, as it could certainly never withstand a 90 kVA throughput at a 100% duty cycle. Keep in mind that virtually all medical x-rays limit the exposure time to fractions of a second. Actually, I was processing closer to 20 kVA in this demo. Still pretty impressive, though, doncha think? ;^)
@gmtcman Yeah, you are right. They x-ray machines do limit the exposure for a very small amount of time and the x-ray transformers can't be run at peak voltage continuously. But that is still SO flippin' awesome! I wish I had one, but I live in small NZ so it's almost impossible to get them...
I assume you're referring to the x-ray transformer? At one time, I was getting these free thanks to a contact with an x-ray machine repair serviceman, whose company just wanted to get rid of the old equipment after updating medical facilities to more modern equipment. Unfortunately, that source has long since "dried up". ;^(
ya i was referring to the x-ray transformer, dosent look like ill be getting one anytime soon lol, jus gonna have to stick to hooking up lots of MOTS =/
Ha, cassidy, that's 20 kVA, not 200! Wouldn't want to brown out my entire nbr'hood, you know ;^) I have a better one than this, now! Guees I should upload some video of it in action.
No, typical medical x-ray tranformers are not rated at their full voltage/current rating continuously. Most x-rays that doctors's offices take nowadays involve a fraction of a second's worth of exposure. Mine is "rated" at 150 kV @ 0.6 amps, which would be 90 kVA. However, it certainly would not handle that kind of output for a 100% duty cycle. On the other hand, I have ran it for several minutes at a time non-stop at ~20 kVA but have never noticed any external warmth above ambient temperature.
I wish :>) That would require like 250 amps at 240 volts input. That would be a bit much for my standard residential 200 amp service, drawn off a 50 kVA pad mount distribution transformer, which my home happens to be sharing with 4 or 5 neighbors for its electrical needs! Nice thought, though ;^)
I'm wondering, are these XRAY transformers rated at xxkVA continuous? For 60kVA, the core leg cross-section would have to be at least 6" by 6" (15 by 15cm)
(4) paralleled 1256D Powerstats (each rated at 240/280 volts @ 28 amps) for input voltage control to the transformer. Also external ballast tends to keep the current draw under 150 amps. Was running about 200 volts and 110
to 120 amps into the 240 volt input tapp of this 150 kV x-ray transformer when the video was shot.
I once had a "hookup" with a local x-ray technician that was getting me these transformers. The "rabbit ear" insulators were a modification that I added as they come with factory recessed female high voltage port access "cups" to which you plug in the matching male plug ends of the high voltage cables. If you manage to get one of these transformers, be very careful as the output of one of these is postively LETHAL! Also, this transformer weighs around 500 lbs.
The cost would depend on your "resourcefulness". I actually found this particular one on ebay, got it for $50, made a 5 hour roundtrip drive to pick it up in my truck. You'd either need several strong buddies or an engine hoist to unload it. Of course a suitable ballast and control for a transformer of this magnitude would weigh as much, if not more than, the transformer itself.
OMFG! you mad man! thats a freking huge jacobs ladder!and i thought i was mad! this summer im going to the junkyard and im going to find myself the biggest transformer ever! Hey, ever tried to put an exposed copper wire in a small jacobs ladder? i tried and it started melting forming small copper balls, you should make a video whith something like that ;D
yea, x-ray transformers rock, providing that you can properly ballast them. Sorry about the poor vdeo quality, I'm knida new to uploading vids to youtube ;^)
x-ray transformer?
sprogdiklis 1 year ago
Is that great big transformer on the right that looks like it came off of a telephone pole hooked to that son of a bitch?
clintonearlwalker 1 year ago
Are you not worried about setting fire to your ceiling!?
soundseeker63 1 year ago
wait, wait, the off switch is on the transformer 10 inches away from the plasma arc?! Seems like a design flaw....
Taylaron1 1 year ago
150kV * 600mA = 90kVA
a380rockerfan 1 year ago
@a380rockerfan - Correct. However, as with most x-ray high voltage generators, this is simply the PEAK rating of the transformer, as it could certainly never withstand a 90 kVA throughput at a 100% duty cycle. Keep in mind that virtually all medical x-rays limit the exposure time to fractions of a second. Actually, I was processing closer to 20 kVA in this demo. Still pretty impressive, though, doncha think? ;^)
gmtcman 1 year ago
@gmtcman Yeah, you are right. They x-ray machines do limit the exposure for a very small amount of time and the x-ray transformers can't be run at peak voltage continuously. But that is still SO flippin' awesome! I wish I had one, but I live in small NZ so it's almost impossible to get them...
a380rockerfan 1 year ago
you think that's enough? :D crikey!
lexichronicle2 1 year ago
hey how did u get one of these things they must almost impossible to find?? ps, nice vid
r3a937569 2 years ago
I assume you're referring to the x-ray transformer? At one time, I was getting these free thanks to a contact with an x-ray machine repair serviceman, whose company just wanted to get rid of the old equipment after updating medical facilities to more modern equipment. Unfortunately, that source has long since "dried up". ;^(
gmtcman 2 years ago
ya i was referring to the x-ray transformer, dosent look like ill be getting one anytime soon lol, jus gonna have to stick to hooking up lots of MOTS =/
r3a937569 2 years ago
@r3a937569 Good news! I have recently re-established my contact for obtaining medical x-ray transformers for next to nothing. :^))
gmtcman 1 year ago
@gmtcman Good news! I have recently re-established my contact for obtaining medical x-ray transformers for next to nothing. :^))
gmtcman 1 year ago
omg the arc is like lapping on the roof
Wissenschaftsgeck 2 years ago
o..haha..i didnt know! i suscirbed and i will watch your videos if you put more up, even if i have no idea what is going on.
FISHIEEpenguinn 2 years ago
Hey dad!! its cassidy :D maybe one day i will be making those things..probably not. lol i have no idea what all this 200kvA stuff if?? haha
FISHIEEpenguinn 2 years ago
Ha, cassidy, that's 20 kVA, not 200! Wouldn't want to brown out my entire nbr'hood, you know ;^) I have a better one than this, now! Guees I should upload some video of it in action.
gmtcman 2 years ago
awesome Jacobs Ladder!!...5/5 Man!
form109 2 years ago
... would make an awesome nightlight.
SpartanJose777 2 years ago
WTF HOW DID YOU GET INTO MY BEDROOM!!!
Xxero0 3 years ago
No, typical medical x-ray tranformers are not rated at their full voltage/current rating continuously. Most x-rays that doctors's offices take nowadays involve a fraction of a second's worth of exposure. Mine is "rated" at 150 kV @ 0.6 amps, which would be 90 kVA. However, it certainly would not handle that kind of output for a 100% duty cycle. On the other hand, I have ran it for several minutes at a time non-stop at ~20 kVA but have never noticed any external warmth above ambient temperature.
gmtcman 3 years ago
wow.. i REALLY want this thing!
triggerhappy77707 3 years ago
More Power! 60kVA, at least :D
jmartis2 3 years ago
I wish :>) That would require like 250 amps at 240 volts input. That would be a bit much for my standard residential 200 amp service, drawn off a 50 kVA pad mount distribution transformer, which my home happens to be sharing with 4 or 5 neighbors for its electrical needs! Nice thought, though ;^)
gmtcman 3 years ago
I'm wondering, are these XRAY transformers rated at xxkVA continuous? For 60kVA, the core leg cross-section would have to be at least 6" by 6" (15 by 15cm)
jmartis2 3 years ago
That is one helluva transformer! How the hell did you get 20kva? that is either 166 amp or 83. OMG!
triggerhappy77707 3 years ago
(4) paralleled 1256D Powerstats (each rated at 240/280 volts @ 28 amps) for input voltage control to the transformer. Also external ballast tends to keep the current draw under 150 amps. Was running about 200 volts and 110
to 120 amps into the 240 volt input tapp of this 150 kV x-ray transformer when the video was shot.
gmtcman 3 years ago
incredible man... So you can pull 20kva? wow i bet i can only pull 10kva.
triggerhappy77707 3 years ago
Hey where can you find these transformers at? This is what i want to do, i've been using MOTS but there not nearly as powerfull as this! thanks
fnaguitarplayer9 3 years ago
I once had a "hookup" with a local x-ray technician that was getting me these transformers. The "rabbit ear" insulators were a modification that I added as they come with factory recessed female high voltage port access "cups" to which you plug in the matching male plug ends of the high voltage cables. If you manage to get one of these transformers, be very careful as the output of one of these is postively LETHAL! Also, this transformer weighs around 500 lbs.
gmtcman 3 years ago
good lord! 500ibs, that would be a "non-movable setup" if i ever get one!!! How much would u say one would cost?
fnaguitarplayer9 3 years ago
The cost would depend on your "resourcefulness". I actually found this particular one on ebay, got it for $50, made a 5 hour roundtrip drive to pick it up in my truck. You'd either need several strong buddies or an engine hoist to unload it. Of course a suitable ballast and control for a transformer of this magnitude would weigh as much, if not more than, the transformer itself.
gmtcman 3 years ago
OMFG! you mad man! thats a freking huge jacobs ladder!and i thought i was mad! this summer im going to the junkyard and im going to find myself the biggest transformer ever! Hey, ever tried to put an exposed copper wire in a small jacobs ladder? i tried and it started melting forming small copper balls, you should make a video whith something like that ;D
DDeafth 3 years ago
yea, x-ray transformers rock, providing that you can properly ballast them. Sorry about the poor vdeo quality, I'm knida new to uploading vids to youtube ;^)
gmtcman 3 years ago
Damn! Sure beats my 12/30 NST ladder! ! !
Fetus133 3 years ago