Thanks for posting DP.Heres a thread I started on another forum, its very similar to yours only I built mine from a vehicle ignition coil as the whole thing runs from 12v vehicle power and a vehicle engine driven alternator, the high voltage part is a marconi oscillator.
https://www.edaboard.com/thread172613.html
Here's an article on how it works:
**broken link removed**
I used stack of 25 x 15 x 10 N87 ferrite cores, 10 in total I think, you can see the trans on the thread.
I metion in the thread it didnt work on an ac weld set, that was my snafu, it wasnt powered up.
To protect the weld set or alty whatever is powering the system you can put a 1u motor start cap across it, this effectively shorts out the hf and directs it to the arc.
If my memory serves, that is how the arc looks when you pull the electrode farther than its "comfort zone".
The OP posted his question on the 2nd of January 2017. It is now the 10th of January, and 26 posts later. How come you didn't post this wonderful information, which only amounts to a copy of a service manual, in the first place and save everybody the trouble.Here's how Miller made their HF TIG units years ago.
(Page 5 and forward for schematics. Parts lists at the end.)
https://www.millerwelds.com/files/owners-manuals/O610A_MIL.pdf
The T2 air core HF coupling transformer is made on a 1:1 ratio of 12 - 15 turns each. HV solid core ignition cable for the HV outer layer primary and whatever gauge of cable for the HC inner layer secondary wound on a ~ 1.5" - 2" PVC or other suitable plastic former should suffice for a DIY design.
No point in spending weeks and who knows how much money doing wild ass guessing and poke and hope experimental construction work when abuse internet search gives you every major detail of what you want if you just ask it the right question.
The OP posted his question on the 2nd of January 2017. It is now the 10th of January, and 26 posts later. How come you didn't post this wonderful information, which only amounts to a copy of a service manual, in the first place and save everybody the trouble.
So you have a good solution, well lets see a complete schematic with all values shown and see how it tests out.
As for your constant abuse on ETO, when you do not get your own way, I do not know what your problem is. You should realise that you are just another member on ETO however much you may think that you have a superior knowledge to everyone else.
As I said before- behave TCM. I know you are a better man than your behavior would indicate.
Once again this this turning into the TCM show, with long dissertations about yourself, your standards, and your point of view. You have annoyed many people on this site, especially OPs and on other sites. It is you who is being rude, not other people as you seem to imagine, and that is what triggered this current discussion.I guess I didn't like the OPs reply and justification for his actions or approach way back so I felt it was worth sitting back and watching this circus play itself out for a while to see if it went anywhere on its own since certain people have thrown fits over my 'pushing my knowledge and experience on them' in other threads in order to try and save them needless wasting of time, money and effort chasing largely irrelevant to the design details.
They are in the link and its parts list if anyone bothered to look at them in detail other than the details of the HF air core coupling transformer of which I gave a quick basic written description of how its made.
I do as I please when I please for whatever reason I please within the constraints of the forum rules even though given you, and if it's not you it's someone else, tend to throw a fit about what I do and how I do it regardless of whether I share information or I don't as shown here as of lately.
I only have to live up to my own standards and expectations (and I do!) as much as it may disappoint others. I'm fickle that way.
Personally I don't know exactly what changed in the internet world but in the last few months it seems that the overall respect and courtesy people show to others has dropped off substantially to where no matter where you go someone is acting like a troll and making life miserable for anyone who doesn't believe or function as they do whether it's justified or not and most of the time is not justified.
Theres no respect, no adherence to scientific or rational facts or general social etiquette from too many now regardless of topic or question.
I do however suspect that US elections outcome and all the selfish petty BS it brought to light in otherwise decent people and general internet practices is likely the source being most every person who has a naturally strong personality and presence in either or both general character or technical capacity is continually the primary targets for getting torn into for whatever they do or say by someone who thinks they have to prove that person is wrong at all costs.
Even if it means repeatedly making themselves look like utter idiots and ******** over things they obviously know nothing about let alone are experienced or experts on, unlike the people they attack have proven themselves to be, to no end.( not necessarily you so much. You're pretty low on my list in that aspects but don't push it. )
Sorry for bringing politics into this thread to explain my views but it seems to be the #1 thread invasion spillover topic everywhere for every reason lately to justify someone chewing on or attacking someone else for any reason, if you had not noticed ,on any other forums or social sites already.
There are some really bitter and butt hurt people on the internet in every forum now that can be very wearing on me and most everyone else and I won't hide it or from them.
Here's how Miller made their HF TIG units years ago.
(Page 5 and forward for schematics. Parts lists at the end.)
https://www.millerwelds.com/files/owners-manuals/O610A_MIL.pdf
The T2 air core HF coupling transformer is made on a 1:1 ratio of 12 - 15 turns each. HV solid core ignition cable for the HV outer layer primary and whatever gauge of cable for the HC inner layer secondary wound on a ~ 1.5" - 2" PVC or other suitable plastic former should suffice for a DIY design.
I would be happy to and have even tried to avoid it by not posting anything, but I am not the one doing the continual attacks here. I post or don't post what I feel is relevant and he throws a fit about my attitude and ego or personality or whatever else.
In other threads I posted information and got chewed on for it and now in this thread I don't post information and I get chewed on again for apparently holding it back.
Whether I post or don't I am apparently 'supposed to be a better person than I am' based on some arbitrary standard and definitions I do not adhere to.
I'll talk politics with anyone anytime,
It would be up to the other posters and mods if they are OK with it but I'm cool with it.
Im thrilled with the election in the US (pretty happy about Brexit too) its been like a Disney cartoon with birds landing on my finger singing to me since.
One question though, do you think it would work against me if I filled out my application to MIT in crayon?
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