Phil, No need to unplug the KPA500 when not in use. There is a master power switch on the rear panel that will disconnect everything.
Ken WA2LBI On Wed, Jun 30, 2021 at 11:41 AM Louandzip via Elecraft < elecraft@mailman.qth.net> wrote: > I use a clamp on ammeter and a short power cord jumper with the wires > separated where I can clamp over the black wire. That quantitatively tells > me the power being consumed/dissipated. Keep in mind temperature is > intensive whereas heat is extensive. > > Lou W7HV > > On Wednesday, June 30, 2021, 9:32:28 AM MDT, Phil Hystad via Elecraft < > elecraft@mailman.qth.net> wrote: > > Living in the Pacific Northwest and having just gone through a big bath > of heat I have become a temperature detective. Anything not being used > should not be radiating in the infrared spectrum above surroundings. Thus, > all of my radios are off. > > Or, so I thought. I forgot that the KPA500 was still on though off and I > put my hand on the side of the cabinet and discovered some dastardly warmth > — a “no-no” in this non-air-conditioned house. So, I unplugged the KPA500 > for the time being. > > But, I was surprised. I would have guessed that I would not be able to > sense any warmth from the cabinet as the surrounding environment should > have kept it cooler. It was not hot. Just warm to the touch. Definitely > not as warm as my iMac computer that I am using at the moment. > > I should get my infrared temperature sensor and measure the actual > radiated temperature and maybe I will do that some day. > > But, is this normal? I assume that there is a small current powering a > micro processor and its related circuitry but should it be actually that > warm — is there a cpu burning "idle loop" used and thus causing high > current flow thru the processor. > > If it were not for the fact that breakfast is almost ready (steel cut > oatmeal) I would plug the KPA500 back in and wait a while and then measure > the temperature of the cabinet. I will do that later. > > 73, phil, K7PEH ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
