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X-ray transformer

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Tesladownunder

Sat Mar 15 2008, 11:27PM

Registered Member #10 Joined: Thu Feb 02 2006, 09:45AM
Location: Bunbury, Australia
Posts: 1424

This is an x-ray transformer that I have had lying around for years.
It comes from an x-ray head with tube enclosed and is rated at 168V in 125kV out.
I ground it out of the lead lined container.
Unfortunately the HV winding was open circuit but still gave a 1 inch spark at 100V. I sort of hoped it might do better when I got it under oil but of course it didn't.
It was drawing about 5kW to get that 1 inch spark!

TDU

Kizmo

Sat Mar 15 2008, 11:35PM

Registered Member #599 Joined: Thu Mar 22 2007, 07:40PM
Location: Northern Finland, Rovaniemi
Posts: 624

Sad to hear that

Another of those so-much-for-nothing moments. Sometimes you put great effort to salvage or rebuild something like that H.V. transformer hoping it works.. and then nothing.

Tesladownunder

Sat Mar 15 2008, 11:54PM

Registered Member #10 Joined: Thu Feb 02 2006, 09:45AM
Location: Bunbury, Australia
Posts: 1424

I try not to look at it like that. I now know how to get one out and have an idea of the internal construction and wiring. For example the integrated filament supply.
I could also remove the HV winding which would leave me with a large single ended transformer on which to wind other things.

You always learn something for your efforts.

TDU

Dr. Dark Current

Sun Mar 16 2008, 08:02AM

Registered Member #152 Joined: Sun Feb 12 2006, 03:36PM
Location: Czech Rep.
Posts: 3384

Kizmo wrote ...

Another of those so-much-for-nothing moments. Sometimes you put great effort to salvage or rebuild something like that H.V. transformer hoping it works.. and then nothing.

Yesterday I found 3 MOTs next to the road. Then I woke up.

Anyway, I was always wondering how much continuous power can these Xray transformers take?

uzzors2k

Sun Mar 16 2008, 09:23AM

Registered Member #95 Joined: Thu Feb 09 2006, 04:57PM
Location: Norway
Posts: 1308

Plasmaddict wrote ...

Yesterday I found 3 MOTs next to the road. Then I woke up.

Heh, that happened to you too? I dreamt that I had two dozen MOCs in a box somewhere in my room, and that I just had to find them. Ever have the feeling your hobby has become your life?

Arcstarter

Mon Mar 17 2008, 03:27AM

Registered Member #1225 Joined: Sat Jan 12 2008, 01:24AM
Location: Beaumont, Texas, USA
Posts: 2253

Well i have around 6 mot's and i got them all from the side of the street. It is so awesome getting junk off of the street!

Dr. Dark Current

Mon Mar 17 2008, 06:28AM

Registered Member #152 Joined: Sun Feb 12 2006, 03:36PM
Location: Czech Rep.
Posts: 3384

Arcstarter wrote ...

Well i have around 6 mot's and i got them all from the side of the street. It is so awesome getting junk off of the street!

I guess you live in the US?

Here in central Europe I haven't seen a SINGLE thrown out microwave, even in scrap yards etc.

Tesladownunder

Mon Mar 17 2008, 12:26PM

Registered Member #10 Joined: Thu Feb 02 2006, 09:45AM
Location: Bunbury, Australia
Posts: 1424

I stripped 12 MO's recently to get more shed room. All side of the road jobs.
Problem is I gave myself a persistent case of tennis elbow after I sprained it throwing left over MO cases off the trailer at the tip.
I know that you will feel very sorry for me in Central Europe

The current x-ray transformer was a throwout at the local radiology repair place although I also bought some scrap stuff too. The 60kV 300mA transformer was a freebie from the physics Dept. but was not easy to get off the trailer with its 300kg.

TDU

Zum Beispiel

Mon Mar 17 2008, 12:47PM

Registered Member #514 Joined: Sun Feb 11 2007, 12:27AM
Location: Somewhere in Pirkanmaa, Finland
Posts: 295

Plasmaddict wrote ...

I guess you live in the US?

Here in central Europe I haven't seen a SINGLE thrown out microwave, even in scrap yards etc.

I get mine from recycling centers. I just ask for the "nasty" ones (you know, the rusted out, filthy and/or smelly type) and they give them away. I've gotten something like 30 microwaves this way.

If you just rip the innards out and don't look into the cooking cavity (

) it's relatively painless.

Kizmo

Mon Mar 17 2008, 03:24PM

Registered Member #599 Joined: Thu Mar 22 2007, 07:40PM
Location: Northern Finland, Rovaniemi
Posts: 624

Tesladownunder wrote ...

I stripped 12 MO's recently to get more shed room. All side of the road jobs.
Problem is I gave myself a persistent case of tennis elbow after I sprained it throwing left over MO cases off the trailer at the tip.
I know that you will feel very sorry for me in Central Europe

Is all that weight from transformer/oil/casing? 300kg sounds *really* heavy for such 'small' transformer. Maybe there is some lead shieldings?

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