[Elecraft] K3: ammeter display does not include 12 RCA acc skt?
Matt Zilmer
mzilmer at verizon.net
Mon May 30 13:22:39 EDT 2011
Check the schematic. The aux 12V is really "close" to the 12V input,
being dropped by one diode and a FET junction. There's no shunt in
that leg. No way to measure I to the 12V output.
matt W6NIA
On Mon, 30 May 2011 18:18:44 +0100, you wrote:
>Well, it's in the title really, but I was surprised to find that
>turning the P3 off does not reduce the current reading on the K3
>display (the P3 is powered by the 12v acc skt). That's a pity as it
>would be useful to see the load on that socket without using an
>external ammeter. Yes, I do have other 12V supplies etc etc..... :-)
>
>I guess that's a hardware rather than a firmware issue?
>
>73 Stephen G4SJP
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