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150kv transformer

magnus2112
magnus2112 over 9 years ago

Hi there experts!

So, i am currently working with on building a x-ray machine using a old russian x-ray tube.

The tube requires 150 kv, and i tend to build some kind of power supply for it, but my question is: what type?

What i mean is that i could problebly build a tesla coil, marx generator, or some kind of combo of sort to power the tube, but i wonder:

What would be the easyes and most cost efficient sort of power supply to power it?

 

Magnus Simensen

Btw: i am no new beginner when it comes to high voltage, and the safety regulations  to keep myself safe image

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  • clem57
    clem57 over 9 years ago in reply to Robert Peter Oakes +3
    I removed like after seeing the youtube video. Too wild for my temperament. Warning this should NOT be done at home! Clem
  • jw0752
    jw0752 over 9 years ago +2
    Hi Magnus, You need to be more concerned with shielding and Collimation than the high voltage to begin with. I do not doubt that you are an experienced and competent technician but if you have to ask about…
  • jw0752
    jw0752 over 9 years ago in reply to Robert Peter Oakes +1
    Hi Peter, You are right on point here. While I can't speak to medical x-ray machines the dental variety are all under 90 kVp and modern beam intensity is typically under 10 mA. Even so, if you multiply…
  • mudz
    0 mudz over 9 years ago

    Hi magnus2112
    Actually I've never tried that, so I'm going to bookmark this for future. image
    But I believe I saw similar thing made by this great man.. Check it out: https://www.youtube.com/watch?v=CkGVMWK10qU
    and this : https://www.youtube.com/watch?v=KzSoabcQYMg

    He did something similar I don't know in which video but you can check. And I bet you can't watch it without laughing once during his whole video(all of his videos are same fun)..

    I hope it helps!

     

    mudz

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  • Robert Peter Oakes
    0 Robert Peter Oakes over 9 years ago in reply to mudz

    Holy &*^%&*^%, that guy has over 1/2 million subscribers and it is not even teaching you anything exept how to electrocute your self... Im in the worng game image

     

    Obviously he knows what he is doing but is fooling arround for ratings and the like

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  • mudz
    0 mudz over 9 years ago in reply to Robert Peter Oakes

    Believe me he knows much.. He is one of the best electrical engineer.. it's his way to tell what to avoid.. try to watch his other videos, you will know here : https://www.youtube.com/watch?v=XDf2nhfxVzg

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  • jw0752
    0 jw0752 over 9 years ago

    Hi Magnus,

    You need to be more concerned with shielding and Collimation than the high voltage to begin with. I do not doubt that you are an experienced and competent technician but if you have to ask about how to do the power supply then maybe you need to rethink this project. While we want to help we usually do not assist in projects that can be dangerous or lethal. This eliminates liability and regrets. Just out of curiosity what do you intend to use 150 kVp x-rays for?

    John

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  • magnus2112
    0 magnus2112 over 9 years ago in reply to jw0752

    Thanks for the concern, and i will assure you that i wondt be in eny danger.

    When it comes to my shealding, i got the perfect thing.The project is run inside a huge safe (the safe has the size of a small bathroom), with me outside.

    The room has a 20 cm thick steel dore, with will be closed under the project.

    I also have a geiger counter, with i will use to asure my safety.

    When it comes to what i will use it fore, it isn't realy a answer, Its more if a "can i do it" project.

    Maybe take some awesome pictures, but in the end it dosent realy have eny use in my life.

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  • jw0752
    0 jw0752 over 9 years ago in reply to magnus2112

    Hi Magnus,

    Thanks for the information. Sounds like you have the shielding covered. A Geiger counter will detect x-rays as I have used one in the past for this purpose but it is not a very accurate indicator of energy or intensity. The best it will indicate in the presence of x-rays.

    John

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  • clem57
    0 clem57 over 9 years ago in reply to Robert Peter Oakes

    I removed like after seeing the youtube video. Too wild for my temperament. Warning this should NOT be done at home!

                                     brain+fired.jpg

    Clem

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  • Robert Peter Oakes
    0 Robert Peter Oakes over 9 years ago in reply to magnus2112

    I dont agree that "I wont be in Danger" is the right or correct answer, a device of that power will ALWAYS put you in danger but it does seem you will be taking reasonable precausions like running it in a seperate and somewhat sheilded room

     

    Hospitals and the like use LEAD lined rooms and clothing, will a steel bunker provide the same protection ???

    A Geiger Counter is typically used for Nuclear Radiation, Not XRays (Atleast the ones commonly spoken of), will a Geiger Counter detect the XRays !!, different frequency range etc

     

    You seem to be welll informed but I ent to agree with John, this is a disaster waiting to happen 150KV is very difficult to insulate in a none industrial setting and with enough power to drive your XRay machine, I would imagine will kill you instantly given half a chance

     

    I do not think Tesla Coils or Vandegraph Generators will produce enough power to sustain the beam ?

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  • jw0752
    0 jw0752 over 9 years ago in reply to Robert Peter Oakes

    Hi Peter,

    You are right on point here. While I can't speak to medical x-ray machines the dental variety are all under 90 kVp and modern beam intensity is typically under 10 mA. Even so, if you multiply 100 KV by 10 mA you still get 1000 watts. That is a bright photon source and this is just a dental x-ray. If the tube is properly housed and shielded only a fraction of this energy actually makes it out the collimator to be used for the x-ray of the teeth. The control of the current in the beam is very important as it controls the intensity of the emission. It is doubtful that any Vandegraff that is easily made can produce 10 mA. I am not sure about the Tesla but here again most of those are not designed to run under a 10 mA load. The Geiger responds to the x-rays if enough photons can penetrate the window and ionize enough gas to produce a cascade. As I mentioned the Geiger will detect the presence of x-rays above 20 kVp but will tell nothing about the kVp nor the intensity of the emission.

    John

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  • Jan Cumps
    0 Jan Cumps over 9 years ago in reply to clem57

    Cm'on clem57. He's good fun.

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