Making a high-voltage power supply  - Page 1
Forum section: electronics / projects

author: AutogolazzoJr
author_rank: Regular Contributor
timestamp: November 02, 2017, 09:30:21 pm
content: I wanted to try out this project:https://www.instructables.com/id/Homemade-Xray-Machine/Most of it I get, but I have some trouble with the power supply. It uses a zvs flyback driver into a flyback transformer with a custom primary, and the output into a cascade. I want to use a pre-made zvs like this:https://www.ebay.com/itm/ZVS-Tesla-coil-flyback-driver-SGTC-Marx-generator-Jacobs-ladder-12-30V-DC-I6X3/272702670660?epid=1484321617&hash=item3f7e588744:g:rl4AAOSwH09ZNOMpbut I was stuck on the flyback transformer. I want to use something like this:https://www.ebay.com/itm/154-207E-Flyback-Transformer-154207E-HR-7908/121633374489?hash=item1c51ea0119:g:p6wAAMXQySpRWv~sbut then I realized that it probably outputs dc, and the cascade needs ac. Is there a way to convert it to ac, or a better flyback transformer for the same price? Any other things to note?

author: prasimix
author_rank: Unknown
timestamp: November 02, 2017, 10:46:58 pm
content: You can try this15 kV(up to 300 W) HV transformer. The site is on German (from Graz, Austria) but I had no problem to get one (paid by PayPal).

author: AutogolazzoJr
author_rank: Regular Contributor
timestamp: November 02, 2017, 11:28:47 pm
content: Thanks! So it's basically a stripped down flyback transformer with only a core and secondary winding?

author: prasimix
author_rank: Unknown
timestamp: November 03, 2017, 07:37:29 am
content: Yes, you have to add primary winding.

author: AutogolazzoJr
author_rank: Regular Contributor
timestamp: November 04, 2017, 01:22:32 am
content: Another question, this might be hard to answer. The transformer has 2400 turns on the secondary. If I were to input 12v dc to a commercial zvs driver, connect the output to a 5+5 primary coil on the transformer, will the secondary voltage be around 5760 volts, or am I doing the calculations wrong?

author: prasimix
author_rank: Unknown
timestamp: November 04, 2017, 09:15:44 am
content: Currently hard to asking and measuring too. I tried it just briefly together with theirZVS driver. It's stated that output could be 15 kV. Maybe you should contact them directly, Thomas could answer you in English.

author: James_EAC
author_rank: Newbie
timestamp: November 29, 2017, 11:35:22 am
content: Parallel the transformer similar this video --->https://youtu.be/YZycPXPTzK8

author: AutogolazzoJr
author_rank: Regular Contributor
timestamp: December 03, 2017, 12:55:39 am
content: That's a dc flyback. Can't generate close to what I need. Sorry. Maybe i could rip off the secondary part and only leave the core, and wind my own primary and secondary, but it's too late as I have already bought the other 15kv power supplies.

author: sdouble
author_rank: Frequent Contributor
timestamp: December 03, 2017, 06:15:17 am
content: for your info, X-rays are ionizing particles which ARE dangerous.If you have no experience with shielding ionizing particles , i suggest to get out of that project..

author: AutogolazzoJr
author_rank: Regular Contributor
timestamp: December 03, 2017, 05:54:30 pm
content: Do not worry, I have plenty of lead and most importantly, distance. I am more afraid of the high voltage power supply. Should I buy mineral oil to submerge the power supply in or just stick to unopened vegetable oil?