[Elecraft] Small got-ya to watch for when doing the K3 12VDC Out Current Mod

[vk4tux]

Ok, I was thinking the P3/SVGA drew less current at 15v than 12v, due to the
5/3.3/2.5/2.2 v pwr supply setup requiring less current at 15v input than it
does at 14v input or less.

I checked the K3 output with a 20 ohm/50w variable rheostat and it trips at
0.6amp or 600mA on my fluke 87.







What most people notice is that the P3 will switch off after a period of
operation when the resettable fuse finally heats enough to open. Your K3 may
have a defective resettable fuse in the 12V output line.



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