Talk:Spark gap

message: I don't consider it vandalism  to use the most familiar term; in a general sense, cyan is a shade of blue to most people, just as magenta or fuchsia might be considered pink (indeed, as the cyan article notes, cyan often goes undistinguished from light blue). To state in the article that cyan is not blue  implies that the reader's perceptions are wrong. I've rephrased to what I hope is an acceptable compromise, "cyan or blue." -- Wapcaplet 15:54, 30 Oct 2004 (UTC)
thread_title:  Cyan isn't blue? 

message: Gas Tubes are ceramic arresters utilizing a spark gap, but often called a spark gap.  Why?
:Its a spark gap with ioinsed gas surrounding the elctrodes to make it fire more predicatably/at a lower voltage. The ceramic is just the casing.--Light current 17:14, 23 June 2006 (UTC)
thread_title:  Gas Discharge Tube 

message: THe new image is really great. But is it possible to make it a bit bigger so we can really see whats happening>--Light current 17:50, 23 June 2006 (UTC)
thread_title:  New moving image 

message: In welding we have always been told not to look at the arc at the point of contact because it is producing a broad spectrum of wavelengths, including damaging UV radiation, which can permanently damage the retina.
Does this same safety rule apply to the arc produced by the Jacob's ladder? Is it unsafe to view the arcing for long periods of time? 
(I am already aware of the ionization hazards which produce oxygen and nitrogen ions that reform into reactive compounds.)
DMahalko (talk) 02:16, 6 July 2008 (UTC)
thread_title:  Any light emission hazards with Jacob's Ladder? 

message: I hoped to find here the circuit symbol for a spark gap.  Is there a standard one?
RAClarke (talk) 11:59, 25 September 2008 (UTC)
thread_title:  Circuit symbol 

message: Isn't it incandescence?
--::- Victor van Poppelen (talk • contribs) 02:30, 28 October 2008 (UTC)
thread_title:  Fluorescing? 

message: It says here that arcs are 30kv/cm yet many sources say 10kv/cm
Source: somewhere on this website http://wiki.4hv.org/index.php/Main_Page  —Preceding unsigned comment added by 122.49.165.253 (talk) 06:11, 16 February 2009 (UTC)
thread_title:  Length of HV arc 

message: Why was Jacobs Ladder performed? 
Whats the specific purpose of the study?  — Preceding unsigned comment added by 68.200.123.12 (talk) 00:26, 7 November 2012 (UTC)
thread_title:  Jacobs Ladder  

message: Given the historical devices mentioned is it fair to dismiss inclusion of UJTs as "unusual"? Agree UJTs are today, but so to are the historical devices here. "special apps" suggest inclusion of unusual devices. Could verification of production figures be of any use in settling this? 109.145.71.94 (talk) 03:38, 23 December 2012 (UTC)
replies: text: Device type numbers and power ratings would be interesting. The only unijunctions I've ever used have been small-signal types. Andy Dingley (talk) 10:25, 23 December 2012 (UTC)

text: I searched for UJT's being used as protection devices before I removed the content and did not find any references. In the 60s and 70s, UJTs were used to trigger SCRs, so they may have been used in combination for crowbar protection, but the primary protection would be supplied by the SCR and not a bare UJT. Glrx (talk) 22:23, 27 December 2012 (UTC)
thread_title:  unusual devices? 

message: Suggest since this article covers a wide variety of devices and applications that it be summarized with links to new wiki pages for important applications, e.g. TSG (Power-switching devices).D A Patriarche (talk) 11:48, 7 February 2014 (UTC)
thread_title:  Break up article? 

message: Suggest these (TSG) deserve a separate article due to their very specific usage and interest re nuclear devices.D A Patriarche (talk) 11:48, 7 February 2014 (UTC)
thread_title: Power-switching devices

message: This article should be American English. The article was started by American , but he did not use any American spelling.  set the variety by spelling "arrester" in this 14 February 2005 edit. Glrx (talk) 02:08, 23 January 2015 (UTC)
replies: text: Lightning arrestor was first introduced by Chetvorno in March 2010. The article continued happily with that spelling for some years, until an IP edit in March last year to change it. Andy Dingley (talk) 10:50, 23 January 2015 (UTC)
thread_title:  English variety 

message: Wikipedia does in fact include safety information. See the hazcodes in every chemical article. More relevantly it does care if you die screaming if there is a reliable source for it. See Tert-Butyllithium#Safety.©Geni (talk) 23:38, 26 November 2020 (UTC)
replies: text: Jimbo won't even send flowers to your grieving spouse. It's not the place of Wikipedia to advise the impulsive of the dangers of applying the hard-won knowledge they've just read. I'm pretty sure the article on heart transplant doesn't even warn you to wash your hands first.  --Wtshymanski (talk) 00:09, 27 November 2020 (UTC)
replies: text: Saying that people have been killed by building Jacob's Ladder's is not a how to manual any more than Adrenochrome#Chemistry is a how-to. The reality is that among groups that do less practical stuff with electricity Jacob's Ladder is known for being the pretty effect that involves voltages that can get you killed . The fact is has killed someone (and I have a reliable source to that effect) is both significant enough and notable enough to be mentioned in the article. Same way that the Chlorine trifluoride article mentions it can burn sand because among chemists that's what its best known for even if its very much secondary to its main applications.©Geni (talk) 00:29, 27 November 2020 (UTC)
replies: text: If one's only knowledge of electrical matters was to be gleaned from Wikipedia articles, then one is in so much trouble already that the extra warnings are not going to help.  Please, sir, what Wikitaskforce is carefully adding safety warnings in every article from Aviation to Zymurgy?  --Wtshymanski (talk) 01:51, 3 December 2020 (UTC)
replies: text: That would be the authors of Boeing_737_MAX#Accidents_and_incidents and Great Molasses Flood respectively.©Geni (talk) 03:01, 3 December 2020 (UTC)
thread_title: Jacob's Ladder