Andy there is a Zener diode (BZW50-15) protection. I have not been bold enough to actually testing it :-) Download the schematics http://www.elecraft.com/manual/K3_Schematics_Jun_2010.pdf and look for (use Search function) for D28 . 73/OZ4UN -----Oprindelig meddelelse----- Fra: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] På vegne af G4HUE Sendt: 15. december 2012 13:26 Til: elecraft@mailman.qth.net Emne: [Elecraft] K3 overvoltage protection
Hi guys, I am a new owner of a K3 serial number 6990 (must say I am mighty impressed by it) and considering its cost I wondered if it had overvoltage protection. I dread the thought of destroying my K3 due to PSU failure! I have searched the past postings and cannot find anything relevant to the K3. If not I will make up ma "crowbar" circuit. Andy G4HUE -- View this message in context: http://elecraft.365791.n2.nabble.com/K3-overvoltage-protection-tp7567207.html Sent from the Elecraft mailing list archive at Nabble.com. ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
