In one off-line reply I was asked why the temperature rose to 50 deg C. With a room temperature of about 25 deg C the temperature of my KPA500 PA module when not keyed runs about 34 deg C. Measured PA dissipation when keyed with no drive is 40.75 W. It seems reasonable that 40.75 W could raise the PA module temperature from 34 deg C to the fan 1 trip temperature of 50 deg C.
The irony is that my Arduino data logger records KPA500 temperature at 3 different locations. Had it been running I would have recorded some interesting data. However, it was the fact that it lost power that caused the event. Now, of course, I'm tempted to repeat the event with the logger running. 73, Andy, k3wyc ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
