Timeline for Current limiting for jacob's ladder?
Current License: CC BY-SA 4.0
8 events
| when toggle format | what | by | license | comment | |
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| Jul 19, 2018 at 1:19 | comment | added | DrMoishe Pippik | Not to worry too much. Current-limiting is good practice, but older transformers are designed to run for hours igniting oil in the furnace across a spark gap. See pupman.com/listarchives/1997/may/msg00486.html | |
| Jul 19, 2018 at 0:47 | answer | added | user105652 | timeline score: 1 | |
| Jul 18, 2018 at 22:52 | comment | added | jonk | Just as a note: 10 kV accelerated electrons striking metal target implies "soft x-rays." Pretty soft. And yes, there is air in the way to hinder the final velocities. But x-rays still occur. See any of several papers by J. R. Dwyer from about 2003 to 2008. (Dental is somewhat 'hard' and is 70 kV, typically.) | |
| Jul 18, 2018 at 22:05 | comment | added | D.A.S. | The more current, the higher the ladder goes. Some use a variation. Wear sunglasses 🕶 | |
| Jul 18, 2018 at 21:59 | comment | added | D.A.S. | Any fluorescent ballast has enough inductance to define current limit. Since arc has negative resistance it drops in voltage as current rises and the “- ESR” depends on current while the ballast is high “+” reactive X(f) that limits the current and thus the holding current rises with gap as it rises and extinguishes at an electrode gap limited by the current threshold, Ih. Similar to an SCR. | |
| Jul 18, 2018 at 20:49 | history | edited | winny | CC BY-SA 4.0 |
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| Jul 18, 2018 at 20:43 | comment | added | Phil N DeBlanc | Some people call me crazy, but I used a neon sign transformer, a wire coat hanger cut in two, and some insulated stand-offs mounted to a piece of wood. Connected the wires that went to the neon to the coat hanger pieces, plugged it in and held my breath. It took less than two minutes to get the gap right and the thing arcing nicely. I AM NOT a trained professional and am just sharing my experience. | |
| Jul 18, 2018 at 20:28 | history | asked | cat pants | CC BY-SA 4.0 |