[Elecraft] K2 does output power drop with heat?

dw bw_dw at fastmail.fm
Tue Mar 17 21:29:39 EDT 2009


Hi,
I'm looking at the KPA100 schematic.
I see Q3 (NPN MJE182) feeding U7B op-amp, and a reference to .6 to .9
vdc.
It looks like Q3 is being used to sense temperature.
I'm guessing its mounted on the heat-sink.
U7B looks like a current regulation config based on the IR drop on Q3.
Does this mean the amp automatically drops output power if the heat-sink
starts to warm up?

Thanks
Duane
N1BBR
-- 
 Bw_dw at fastmail.net



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