[Elecraft] K3 overvoltage protection

[Poul Erik Karlshøj (PKA)]

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-bounces at mailman.qth.net [mailto:elecraft-bounces at mailman.qth.net] På vegne af G4HUE
Sendt: 15. december 2012 13:26
Til: elecraft at 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




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