[Elecraft] K3 Current Drain When Off

[Ron D'Eau Claire]

Yes, that was my mistake (mentally moving the decimal point!) 

However, several others including me have measured a real parasitic drain of
almost 40 mA (38 mA in my case) that is produced by the KPA3. I disconnected
the power to the KPA3 at the circuit breaker and the drain dropped to
virtually zero. 

The measurement was made by placing an ammeter in the positive lead from the
power supply. Nothing at all connected to the K3 except for the power cable.


It's not an issue to me because I switch off the dc supply when leaving the
shack, but there are a significant number of Hams who run from batteries and
solar panels even at home. 40 mA can be very significant to them if the rig
is left connected to the battery. 

73 Ron AC7AC

-----Original Message-----
From: elecraft-bounces at mailman.qth.net
[mailto:elecraft-bounces at mailman.qth.net] On Behalf Of Jim Brown
Sent: Friday, October 18, 2013 4:52 PM
To: elecraft at mailman.qth.net
Subject: Re: [Elecraft] K3 Current Drain When Off

On 10/18/2013 2:57 PM, Ron D'Eau Claire wrote:
> That only explains the apparent drain of several amperes Jim noticed.

If you're talking about me, the false readings I was getting from the Watts
Up meter were in the range of 40 mA, and a Fluke measured 4 mA in the
positive lead. There may, however, be something happening on  the negative
lead that is causing the false readings. I don't have a fixture yet to put a
Fluke there. I should do that.

73, Jim K9YC


______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft at mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html