[Elecraft] Wattage Draw - K3S/100 vs KPA500/KAT500 - for UPS

[Phil Kane]

On 8/30/2017 10:56 AM, Mike Maloney wrote:

> At 650W output into 50 ohm load, highest VA recorded was at 14.1 MHz
> at 1166.  Watts 974 with a pf of 0.83 or 83%.   AC input amps 10.3.
> Awesome!

I don't have a KPA500 (but I do have a KPA100).  If it is running as a
true linear amplifier (Class A) maximum theoretical efficiency is 50%.
I'll let the designer(s) thereof kick that around.  What do I know - I'm
just a (lowly) EE (with 60 years' experience).  :)

73 de K2ASP - Phil Kane
Elecraft K2/100   s/n 5402

>From a Clearing in the Silicon Forest
Beaverton (Washington County) Oregon