Sources of isolation transformers: http://www.hammondmfg.com/5cline.htm
http://www.newark.com/stancor/gis-250/isolation-transformer/dp/16M3780 Mike Pappas [email protected] On Feb 1, 2011, at 4:16 PM, Nigel Gunn G8IFF/W8IFF wrote: > You don't make one, you go buy it. > It's just a 1:1 mains in/mains out power transformer. > You probably need something rated for a couple of KVA. They're not cheap. > Run the transformer from a GFCI protected power outlet. > > > > On 01-Feb-11 23:06, Jim Larsen - AL7FS wrote: >> While we are on test equipment topics... >> >> I have been combing the internet for a building article on isolation >> transformers and Ground Fault Circuit Interrupters >> (GFCI). I cannot believe that I cannot find any. It is not even in the ARRL >> Handbooks I looked at. >> >> I want to start working on boatanchor rigs, not to mention my TR4-CW, but >> everybody says ALWAYS use an isolation >> transformer and GFCI. Nobody says How to do that. It is assumed that all >> hams know what an isolation transformer is or >> how to build one. Somehow I missed that in my 46 years as a ham. Go figure. >> >> Google and Bing have failed me. Can any of you help? A URL? A PDF? A .doc >> file? >> >> Thank you. >> >> 73, Jim >> >> Jim Larsen, AL7FS >> Anchorage Alaska >> 907-345-3190 >> http://www.AL7FS.us/ >> >> >> On 2/1/2011 8:18 AM, TC Dailey wrote: >> >> * test gear on MY bench is my trusty Variac. >> I run mine through an isolation xfmr, >> a single 117vac outlet. AND plug-in bridge rectifier >> * Number two is an ANALOG type VTVM - >> * Number three is my old Kenwood TS-430S (used as a receiver) >> * Soldering iron AND a soldering GUN - >> * HP-606A (great signal generator) was analog of course, so I >> made a minibox with a .1 cap in series with the gozinta and the >> gozouta - with a pickup loop for a counter - it's easy to zero up that >> way. >> >> _______________________________________________ >> Drakelist mailing list >> [email protected] >> http://mailman.zerobeat.net/mailman/listinfo/drakelist >> > > -- > Nigel A. Gunn, 1865 El Camino Drive, Xenia, OH 45385-1115, USA. tel +1 937 > 825 5032 > Amateur Radio G8IFF W8IFF (was KC8NHF 9H3GN), e-mail [email protected] > www http://www.ngunn.net > Member of ARRL, GQRP #11396, QRPARCI #11644, SOC #548, Flying Pigs QRP Club > International #385, > Dayton ARA #2128, AMSAT-NA LM-1691, AMSAT-UK 0182, MKARS, ALC, > GCARES, XWARN, EAA382. > > > _______________________________________________ > Drakelist mailing list > [email protected] > http://mailman.zerobeat.net/mailman/listinfo/drakelist _______________________________________________ Drakelist mailing list [email protected] http://mailman.zerobeat.net/mailman/listinfo/drakelist
