[Elecraft] KX3 power supply

Howard Hoyt hhoyt at mebtel.net
Mon Jan 18 16:31:34 EST 2016


John,

I do have a horse in this race (the Kx33), but I will tell you that in 
testing many supplies I have seen that many of them have poor 
regulation.  Some show as much as 25% peak over-voltage which you would 
need a scope to see when a load is removed, which is the situation when 
the KX3 returns to receive after a full-power transmit cycle.  Running 
15.4V average could potentially mean 19.25V peak with such a supply.

This reason plus many others is why we designed the Kx33.  We like our KX3s!

Cheers & 73,

Howie - WA4PSC
www.proaudioeng.com


 >>I would hate to hurt my KX3 with over voltage??
 >>anyone know if there would be any short or long
 >>term problems with running 15.4 volts to the KX3?
 >>It is just slightly above the maximum recommended
 >> supply voltage


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