I am experiencing the same problem with my K3. Using the factory supplied power lead. I measure a 1 volt drop between the power supply terminals and the K3 voltage reading at 100watts input (15.68 amps). I suspect most of the drop is from the power lead and if so, seems a little excessive. I'll measure directly across the PL to confirm this.
Later Bill Harris w7kxb > Date: Wed, 5 Mar 2008 13:05:00 -0500 > From: [EMAIL PROTECTED] > To: [EMAIL PROTECTED] > Subject: Re: [Elecraft] voltage > CC: elecraft@mailman.qth.net > > Marshall, > > There is no adjustment - The voltage measuring circuits are usually > quite accurate (fixed with 1% resistors). > > 1 volt is a lot of difference. Normally there will be a 0.3 volt > difference between the actual power supply voltage and the voltage > internal to the K2 because of the voltage drop across the reverse > polarity protection diode D10 and there may be a bit of voltage drop > across F1 (the resettable fuse). > If you really have a 1 volt drop, you should look for a bad solder > connection in the DC supply line. > > Also, where are you measuring the voltage? If you are measuring it > directly at the power supply, examine the connecting cable carefully and > be certain its connection to the power supply is tight - loose > connections will cause a significant voltage drop which varies with the > current drawn. > > 73, > Don W3FPR _______________________________________________ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
