Yeah. I just take a very simplistic view of it all. Those guys at UL test that stuff under extremely harsh conditions. If it does not break down and fail on those tests, it is very likely that any of those windings can be used in any way anyone wants them to be, as long as common sense is used as far as excessive current, voltage, power, and heat.
One of my rules of thumb: If it runs hot enough that I can't hold my hand on it indefinitely, it's running too hot. Chuck ---- Original Message ---- From: [email protected] To: [email protected] Subject: [neonixie-l] Re: Linear power supplies for nixies Date: Wed, 30 Sep 2015 21:14:11 -0700 (PDT) >I did some research on UL/CSA approved transformers, and there is a >requirement that all windings withstand a minimum breakdown voltage, >even >if they are intended to be connected together, such as >dual-primaries. >Depending upon the VA rating and the voltage, the breakdown must be >between >1050 and 4000 V RMS according to how I read the spec (UL5058-2 / CSA >C22.2 >#66). The test is conducted between 1 winding, and all other windings >and >the core combined and at elevated temperature. There are copies of >the spec >online. > >I knew there had to be some amount of isolation, but I did not >realize it >was *that* high. While I would never expose or touch anything that is > >supposedly "isolated", it does reassure me there is decent >insulation. > > >-- >You received this message because you are subscribed to the Google >Groups "neonixie-l" group. >To unsubscribe from this group and stop receiving emails from it, >send an email to [email protected]. >To post to this group, send an email to [email protected]. >To view this discussion on the web, visit >https://groups.google.com/d/msgid/neonixie-l/49ff59a7-f8f7-4ccc-bd7c- >5969e6fd2514%40googlegroups.com. >For more options, visit https://groups.google.com/d/optout. $4.95/mo. National Dialup, Anti-Spam, Anti-Virus, 5mb personal web space. 5x faster dialup for only $9.95/mo. No contracts, No fees, No Kidding! See http://www.All2Easy.net for more details! -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send an email to [email protected]. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/380-2201510414521890%40all2easy.net. For more options, visit https://groups.google.com/d/optout.
