Author Topic: Homemade HV transformer  (Read 1147 times)

Offline AlexanderHun

  • High Voltage Enthusiast
  • *
  • Posts: 35
  • Karma: +0/-0
    • View Profile
Homemade HV transformer
« on: September 14, 2019, 05:05:00 PM »
Hello!

I would like to ask you, who has made several high voltage transformers here? I was experimenting with television flyback transformers, it could produce a piece of 30kV. They can be connected in series but I want to make my own, my goal is at least 60kV. Do you think this is possible? Included are two forms of what ferrite core I found, so I should design a secondary one.




I drive with this switch ..

https://cdn.instructables.com/FSW/2MIC/GNBEVVKF/FSW2MICGNBEVVKF.LARGE.jpg?auto=webp&&frame=1

I have a 3d printer, I could print what I need, but unfortunately I haven't designed one yet. I will need to drive an X-ray tube, then I want to apply a voltage multiplier.



Offline ritaismyconscience

  • High Voltage Technician
  • ***
  • Posts: 136
  • Karma: +3/-0
    • View Profile
Re: Homemade HV transformer
« Reply #1 on: September 14, 2019, 06:35:32 PM »

Offline AlexanderHun

  • High Voltage Enthusiast
  • *
  • Posts: 35
  • Karma: +0/-0
    • View Profile
Re: Homemade HV transformer
« Reply #2 on: September 14, 2019, 06:43:15 PM »
Thanks! I don't see any specific electrical voltage, nor is it written by any person who built one. Do they measure voltage? I see a 14-20kV post, but it is very little for me

Offline ElectroXa

  • High Voltage Enthusiast
  • *
  • Posts: 23
  • Karma: +1/-0
    • View Profile
Re: Homemade HV transformer
« Reply #3 on: September 14, 2019, 07:01:28 PM »
Hi  :)

what core is in the picture ?
I have the same project, but with a lower voltage (20kV)

I suggest for the bobbin a milled HDPE cylinder because 3d printed coils have air bubble, so partial discharges can occur

cheers

Offline AlexanderHun

  • High Voltage Enthusiast
  • *
  • Posts: 35
  • Karma: +0/-0
    • View Profile
Re: Homemade HV transformer
« Reply #4 on: September 15, 2019, 10:39:29 AM »
Thanks for the help! I have a dental X-ray and I want to operate an X-ray tube. The question is how much tension to multiply, what do I manage to produce for myself.

Philips oralix dental x-ray head:


I usually do X-ray fluoroscopy videos, this is my own:

https://www.youtube.com/watch?v=3kqrlqLzQrE


The tube I want to operate requires 60kV:   (I'd like to operate this tube)



This is a "siemens röntgenkugel" x-ray tube




« Last Edit: September 15, 2019, 10:41:34 AM by AlexanderHun »

Offline davekni

  • High Voltage Engineer
  • ****
  • Posts: 385
  • Karma: +22/-0
  • Physicist, engineer (electronic), and hobbiest
    • View Profile
Re: Homemade HV transformer
« Reply #5 on: September 16, 2019, 02:36:17 AM »
Presuming you need 60V DC, it's probably easier to use a somewhat-lower-voltage transformer and a voltage multiplier.  For my Marx generator, I wound a +-11kV transformer followed by a voltage multiplier to get +-22kV DC
David Knierim

Offline AlexanderHun

  • High Voltage Enthusiast
  • *
  • Posts: 35
  • Karma: +0/-0
    • View Profile
Re: Homemade HV transformer
« Reply #6 on: March 31, 2020, 12:05:40 PM »
Hi! Today I experimented a bit, I have a lot of quarantine due to the coronavirus, I got this with two flyback transformers. Measurement coming soon, the voltage divider has been made ...

https://www.youtube.com/watch?v=XpStl-phy7w

Offline John123

  • High Voltage Technician
  • ***
  • Posts: 152
  • Karma: +2/-0
  • All the gear, no idea. UK
    • View Profile
Re: Homemade HV transformer
« Reply #7 on: April 01, 2020, 07:39:48 PM »
Is that with primaries in parallel and secondaries in series?

Offline johnf

  • High Voltage Experimenter
  • **
  • Posts: 90
  • Karma: +1/-0
    • View Profile
Re: Homemade HV transformer
« Reply #8 on: April 01, 2020, 08:37:29 PM »
I made a 250kV x-ray psu a few years back
i used a max of 7kV from the transformer. Formers very similar to what has been already linked except i had the primary under the secondary. The secondary a press fit over the primary former. 12 turn primary driven by an audio amplifier running +-48 volt rails @ 20 khz
The 7 kv supply fed the center of of a full wave cockcroft walton multiplier one multiplier going each way so that I had the actual transformer feeding inin the centerof the multiplier with the multiplier capas doubled in value for the first two stages in each direction
more info here http://www.coultersmithing.com/forums/viewtopic.php?f=9&t=98

High Voltage Forum

Re: Homemade HV transformer
« Reply #8 on: April 01, 2020, 08:37:29 PM »

 


* Recent Topics and Posts

post Re: 4kJ wire explosions from 2500uF/2kV Maxwell Energy Discharge Capacitor
[Capacitor Banks]
haversin
Today at 03:55:56 PM
post 4kJ wire explosions from 2500uF/2kV Maxwell Energy Discharge Capacitor
[Capacitor Banks]
Mads Barnkob
Today at 10:25:50 AM
post Re: SSTC Micro
[Solid State Tesla Coils (SSTC)]
davekni
Today at 04:59:02 AM
post Re: MMC for a 32kvac load
[Capacitor Banks]
davekni
Today at 04:32:26 AM
post Re: SSTC Micro
[Solid State Tesla Coils (SSTC)]
Rowdy
Today at 04:12:23 AM
post Re: MMC for a 32kvac load
[Capacitor Banks]
Rowdy
Today at 03:41:17 AM
post Re: MMC for a 32kvac load
[Capacitor Banks]
Rowdy
Today at 03:40:25 AM
post Re: SSTC Micro
[Solid State Tesla Coils (SSTC)]
jockoFergy
Today at 02:42:23 AM
post Re: Portable Q(uarantine)CW Tesla Coil
[Dual Resonant Solid State Tesla coils (DRSSTC)]
Uspring
May 27, 2020, 06:21:39 PM
post Re: Improving IGBT gate drive
[Dual Resonant Solid State Tesla coils (DRSSTC)]
fnordest
May 27, 2020, 12:11:06 PM
post Re: Building a bigger DRSSTC
[Dual Resonant Solid State Tesla coils (DRSSTC)]
Max
May 27, 2020, 11:51:19 AM
post Re: MMC for a 32kvac load
[Capacitor Banks]
davekni
May 26, 2020, 07:55:03 PM
post Re: Building a bigger DRSSTC
[Dual Resonant Solid State Tesla coils (DRSSTC)]
davekni
May 26, 2020, 07:40:48 PM
post Re: Working Principle Of Neon Transformer Circuit
[Transformer (Ferrite Core)]
iraquois
May 26, 2020, 05:12:42 PM
post Re: Building a bigger DRSSTC
[Dual Resonant Solid State Tesla coils (DRSSTC)]
Max
May 26, 2020, 03:57:04 PM
post Re: XRay Tank- any ideas about what is inside
[Transformer (Ferrite Core)]
Mads Barnkob
May 26, 2020, 01:52:26 PM
post Re: Blew my first MOSFET, but it seems like it shouldn't have blown the way it did
[Solid State Tesla Coils (SSTC)]
T3sl4co1l
May 26, 2020, 11:52:33 AM
post Re: XRay Tank- any ideas about what is inside
[Transformer (Ferrite Core)]
HighVoltageRulezz
May 26, 2020, 09:40:52 AM
post Re: Blew my first MOSFET, but it seems like it shouldn't have blown the way it did
[Solid State Tesla Coils (SSTC)]
Magneticitist
May 26, 2020, 08:56:01 AM
post Re: MMC for a 32kvac load
[Capacitor Banks]
Mads Barnkob
May 26, 2020, 08:45:40 AM
post Re: Building a bigger DRSSTC
[Dual Resonant Solid State Tesla coils (DRSSTC)]
Mads Barnkob
May 26, 2020, 08:27:58 AM
post Re: Working Principle Of Neon Transformer Circuit
[Transformer (Ferrite Core)]
davekni
May 26, 2020, 06:31:59 AM
post Re: Building a bigger DRSSTC
[Dual Resonant Solid State Tesla coils (DRSSTC)]
davekni
May 26, 2020, 05:24:41 AM
post Re: Building a bigger DRSSTC
[Dual Resonant Solid State Tesla coils (DRSSTC)]
ritaismyconscience
May 26, 2020, 02:01:33 AM
post Re: Working Principle Of Neon Transformer Circuit
[Transformer (Ferrite Core)]
iraquois
May 26, 2020, 01:12:46 AM
post Re: 315-446MHz 27dbm (0.5w at 446MHz) RF amp
[Radio Frequency]
SteveN87
May 26, 2020, 12:37:32 AM
post Re: Working Principle Of Neon Transformer Circuit
[Transformer (Ferrite Core)]
klugesmith
May 25, 2020, 10:35:49 PM
post Re: 315-446MHz 27dbm (0.5w at 446MHz) RF amp
[Radio Frequency]
johnf
May 25, 2020, 09:30:41 PM
post Re: Working Principle Of Neon Transformer Circuit
[Transformer (Ferrite Core)]
davekni
May 25, 2020, 08:17:18 PM
post Re: Working Principle Of Neon Transformer Circuit
[Transformer (Ferrite Core)]
iraquois
May 25, 2020, 07:43:30 PM
post Re: XRay Tank- any ideas about what is inside
[Transformer (Ferrite Core)]
Mads Barnkob
May 25, 2020, 03:32:54 PM
post XRay Tank- any ideas about what is inside
[Transformer (Ferrite Core)]
HighVoltageRulezz
May 25, 2020, 12:52:38 PM
post Re: 315-446MHz 27dbm (0.5w at 446MHz) RF amp
[Radio Frequency]
Da_Stier
May 25, 2020, 10:34:56 AM
post 315-446MHz 27dbm (0.5w at 446MHz) RF amp
[Radio Frequency]
kilohercas
May 25, 2020, 06:38:15 AM
post Re: Isn't there a better way to make a custom toroid?
[General Chat]
Twospoons
May 25, 2020, 03:24:49 AM
post Re: SSTC Micro
[Solid State Tesla Coils (SSTC)]
Magneticitist
May 25, 2020, 03:24:20 AM
post Re: MMC for a 32kvac load
[Capacitor Banks]
Rowdy
May 25, 2020, 03:23:33 AM
post Re: MMC for a 32kvac load
[Capacitor Banks]
Weston
May 25, 2020, 03:06:20 AM
post Re: Isn't there a better way to make a custom toroid?
[General Chat]
johnf
May 25, 2020, 01:33:47 AM
post MMC for a 32kvac load
[Capacitor Banks]
Rowdy
May 25, 2020, 01:02:34 AM
post Re: Isn't there a better way to make a custom toroid?
[General Chat]
Rowdy
May 24, 2020, 11:47:26 PM
post Re: GDT cable specs
[Transformer (Ferrite Core)]
costas_p
May 24, 2020, 11:09:44 PM
post Re: Welcome new members, come say hello and tell a little about yourself :)
[General Chat]
Rowdy
May 24, 2020, 10:39:45 PM
post Re: GDT cable specs
[Transformer (Ferrite Core)]
station240
May 24, 2020, 09:55:49 PM
post Re: Working Principle Of Neon Transformer Circuit
[Transformer (Ferrite Core)]
davekni
May 24, 2020, 09:55:48 PM
post Re: Welcome new members, come say hello and tell a little about yourself :)
[General Chat]
Mads Barnkob
May 24, 2020, 08:16:40 PM
post Re: GDT cable specs
[Transformer (Ferrite Core)]
thecyberman
May 24, 2020, 05:38:27 PM
post Re: Welcome new members, come say hello and tell a little about yourself :)
[General Chat]
Rowdy
May 24, 2020, 02:33:55 PM
post Re: Freewheeling diodes are burning (Now other problems)
[Solid State Tesla Coils (SSTC)]
hip424
May 24, 2020, 02:31:39 PM
post Re: Working Principle Of Neon Transformer Circuit
[Transformer (Ferrite Core)]
iraquois
May 24, 2020, 02:08:53 PM

Sitemap 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 
SimplePortal 2.3.6 © 2008-2014, SimplePortal