On 02/17/2017 07:23 PM, Erik Christiansen wrote: > On 17.02.17 10:17, Kirk Wallace wrote: >> I know what it is, but while cruising through my pictures I got the >> notion that these look like a "What Is It" kind of thing. I thought I'd >> post them just for fun. > > Kirk, the patterns arising from the metal transfer are intriguing. > The next question, though, is "What is it for?", and why the > symmetrical sparkgaps?
I'm a little surprised that this "What's It" didn't get more replies. The pictures are of my Hobart TIG welder's spark gap assembly. The spark gap is used in a circuit that adds a high frequency signal to the torch to aid in starting an arc without having to touch the workpiece with the electrode tip. Getting any workpiece material on the tip will ruin the tip. I found a circuit of a DIY add-on arc starter here: http://www3.telus.net/public/a5a26316/WelderPDFs_Pics/dbARC_START.pdf which includes spark gaps. I believe the space between the gaps sets the output voltage. I don't really know much about welder technology or welding. Acquiring this knowledge has been on my ToDo list for many years. I have been successful at doing some steel and aluminum welding with this unit, but just enough to get a couple of jobs done. http://www.wallacecompany.com/machine_shop/Hobart_Cyber-TIG/ -- Kirk Wallace http://www.wallacecompany.com/machine_shop/ http://www.wallacecompany.com/E45/ ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, SlashDot.org! http://sdm.link/slashdot _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
