Don't forget about the power factor. The simple power supplies in most tube-type amplifiers have pretty low power factors. I've never measured it, but my AL-82 once blew the 15 A 240 V fuses, which suggests PF was less than about 0.7.
As the KPA-500 uses an unregulated 60 V linear supply (just like the HV supplies in the tube-type amplifiers), it probably also has a power factor in the 0.7 range, and probably draws 11-12 A at 120 V. A dedicated 20 A circuit would improve regulation. 73, Scott K9MA Scott Ellington Madison, Wisconsin USA ______________________________________________________________ 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
