Welcome
Username or Email:

Password:


Missing Code




[ ]
[ ]
Online
  • Guests: 25
  • Members: 0
  • Newest Member: omjtest
  • Most ever online: 396
    Guests: 396, Members: 0 on 12 Jan : 12:51
Members Birthdays:
All today's birthdays', congrats!
Bill G (64)
Overclocked (37)
Edi (31)


Next birthdays
09/21 Bill G (64)
09/21 Overclocked (37)
09/21 Edi (31)
Contact
If you need assistance, please send an email to forum at 4hv dot org. To ensure your email is not marked as spam, please include the phrase "4hv help" in the subject line. You can also find assistance via IRC, at irc.shadowworld.net, room #hvcomm.
Support 4hv.org!
Donate:
4hv.org is hosted on a dedicated server. Unfortunately, this server costs and we rely on the help of site members to keep 4hv.org running. Please consider donating. We will place your name on the thanks list and you'll be helping to keep 4hv.org alive and free for everyone. Members whose names appear in red bold have donated recently. Green bold denotes those who have recently donated to keep the server carbon neutral.


Special Thanks To:
  • Aaron Holmes
  • Aaron Wheeler
  • Adam Horden
  • Alan Scrimgeour
  • Andre
  • Andrew Haynes
  • Anonymous000
  • asabase
  • Austin Weil
  • barney
  • Barry
  • Bert Hickman
  • Bill Kukowski
  • Blitzorn
  • Brandon Paradelas
  • Bruce Bowling
  • BubeeMike
  • Byong Park
  • Cesiumsponge
  • Chris F.
  • Chris Hooper
  • Corey Worthington
  • Derek Woodroffe
  • Dalus
  • Dan Strother
  • Daniel Davis
  • Daniel Uhrenholt
  • datasheetarchive
  • Dave Billington
  • Dave Marshall
  • David F.
  • Dennis Rogers
  • drelectrix
  • Dr. John Gudenas
  • Dr. Spark
  • E.TexasTesla
  • eastvoltresearch
  • Eirik Taylor
  • Erik Dyakov
  • Erlend^SE
  • Finn Hammer
  • Firebug24k
  • GalliumMan
  • Gary Peterson
  • George Slade
  • GhostNull
  • Gordon Mcknight
  • Graham Armitage
  • Grant
  • GreySoul
  • Henry H
  • IamSmooth
  • In memory of Leo Powning
  • Jacob Cash
  • James Howells
  • James Pawson
  • Jeff Greenfield
  • Jeff Thomas
  • Jesse Frost
  • Jim Mitchell
  • jlr134
  • Joe Mastroianni
  • John Forcina
  • John Oberg
  • John Willcutt
  • Jon Newcomb
  • klugesmith
  • Leslie Wright
  • Lutz Hoffman
  • Mads Barnkob
  • Martin King
  • Mats Karlsson
  • Matt Gibson
  • Matthew Guidry
  • mbd
  • Michael D'Angelo
  • Mikkel
  • mileswaldron
  • mister_rf
  • Neil Foster
  • Nick de Smith
  • Nick Soroka
  • nicklenorp
  • Nik
  • Norman Stanley
  • Patrick Coleman
  • Paul Brodie
  • Paul Jordan
  • Paul Montgomery
  • Ped
  • Peter Krogen
  • Peter Terren
  • PhilGood
  • Richard Feldman
  • Robert Bush
  • Royce Bailey
  • Scott Fusare
  • Scott Newman
  • smiffy
  • Stella
  • Steven Busic
  • Steve Conner
  • Steve Jones
  • Steve Ward
  • Sulaiman
  • Thomas Coyle
  • Thomas A. Wallace
  • Thomas W
  • Timo
  • Torch
  • Ulf Jonsson
  • vasil
  • Vaxian
  • vladi mazzilli
  • wastehl
  • Weston
  • William Kim
  • William N.
  • William Stehl
  • Wesley Venis
The aforementioned have contributed financially to the continuing triumph of 4hv.org. They are deserving of my most heartfelt thanks.
Forums
4hv.org :: Forums :: Electromagnetic Radiation
« Previous topic | Next topic »   

Portable Xray

 1 2 3 4 
Move Thread LAN_403
Proud Mary
Fri Jan 07 2011, 08:00PM
Proud Mary Registered Member #543 Joined: Tue Feb 20 2007, 04:26PM
Location: UK
Posts: 4992
Japex92 wrote ...

What do think about the XRS050N200?

-50kV @ 200μA is clearly intended for a portable XRF analyser, and wouldn't be suitable for radiography.
Back to top
Japex92
Sat Jan 08 2011, 03:15AM
Japex92 Registered Member #3334 Joined: Tue Oct 19 2010, 02:24AM
Location: Colombia
Posts: 17
If I use and inverter and find a xray tube that work at 0.2mA would work fine, wouldn't it?
Back to top
Adam Munich
Sat Jan 08 2011, 03:29AM
Adam Munich Registered Member #2893 Joined: Tue Jun 01 2010, 09:25PM
Location: Cali-forn. i. a.
Posts: 2242
No, 200uA won't supply enough radiation. You'll have to hold it still for a long time to make an exposure.

Usually dental x-rays supply 5-10mA.
Back to top
Japex92
Sat Jan 08 2011, 05:17AM
Japex92 Registered Member #3334 Joined: Tue Oct 19 2010, 02:24AM
Location: Colombia
Posts: 17
So you reckon the clues here ares a 350 W battery pack, an inverter, a ZVS, a microcontroller,a ferrite core transformer running from 100KHz to 300KHz and CW multipliers. Such transformer must provide 6187,18 V output and 56mA current stepped up by 8-stage multiplier. Mr. Anders suggested that this is the best way, what do you think guys?

There are some manufactures in India that can provide ferrite core transformers I better contact them and see if they can manufacture a customized one.
Back to top
Adam Munich
Sat Jan 08 2011, 05:31AM
Adam Munich Registered Member #2893 Joined: Tue Jun 01 2010, 09:25PM
Location: Cali-forn. i. a.
Posts: 2242
Do you need adjustable KVP? If not then that makes the circuit much simpler.
Back to top
Japex92
Sat Jan 08 2011, 05:34AM
Japex92 Registered Member #3334 Joined: Tue Oct 19 2010, 02:24AM
Location: Colombia
Posts: 17
it does not have to be adjustable, We handled this using power resitors making a voltage divisor.

Back to top
Proud Mary
Sat Jan 08 2011, 10:08AM
Proud Mary Registered Member #543 Joined: Tue Feb 20 2007, 04:26PM
Location: UK
Posts: 4992
There is something wrong-headed, upside-down, and perhaps even bogus about this whole discussion.

The power supply requirements should be dictated by the needs of the application - in this case, a particular X-ray tube approved for dental X-ray diagnostic imaging, and its very particular duty cycle.

Until the needs of the application are specified, all talk about how its particular power requirements might best be met is just bollox.
Back to top
Japex92
Sat Jan 08 2011, 06:53PM
Japex92 Registered Member #3334 Joined: Tue Oct 19 2010, 02:24AM
Location: Colombia
Posts: 17
Ok, attached you will find the xray tube I am using. I have contacted a few ferrite core transformer suppliers and have told them the output and the input I need (6187,18 V output @ 56mA), such transformer is stepped up by 8-stage multiplier, so it should provide 50 kV DC (70kVp at 7mA). Although it says that it operates at 2mA I use 7mA because it offers the best performance and expossure.

I do not know what other specs I should give to the suppliers to manufacture the transformer.
 Bombillo

 Bombillo2
Back to top
Kilham
Sat Jan 08 2011, 07:20PM
Kilham Registered Member #2814 Joined: Wed Apr 21 2010, 12:28PM
Location: Scotland, UK
Posts: 24
Hope you don't mind me butting in but what is the goal of this project?. Is it for a commercial product or a one-off for your own use?. If it's commercial you'd be far better employing an engineer with understanding of HV - what you need is fairly trivial to an experienced designer.
Back to top
Japex92
Sat Jan 08 2011, 07:33PM
Japex92 Registered Member #3334 Joined: Tue Oct 19 2010, 02:24AM
Location: Colombia
Posts: 17
True, but maybe experts in this forum will help not to start from zero. I am not an expert but all the experience here will cooperate to accomplish the goal. There not many experts in HV design in my country that I can talk to.
Back to top
 1 2 3 4 

Moderator(s): Chris Russell, Noelle, Alex, Tesladownunder, Dave Marshall, Dave Billington, Bjørn, Steve Conner, Wolfram, Kizmo, Mads Barnkob

Go to:

Powered by e107 Forum System
 
Legal Information
This site is powered by e107, which is released under the GNU GPL License. All work on this site, except where otherwise noted, is licensed under a Creative Commons Attribution-ShareAlike 2.5 License. By submitting any information to this site, you agree that anything submitted will be so licensed. Please read our Disclaimer and Policies page for information on your rights and responsibilities regarding this site.