[Elecraft] Which of these would make the best power supply for the K3(S)?

[jim]

Astron is another power supply that runs on the "edge".  People that use
them at repeater sites on mountains derate them 50% plus so they do not have
to run to the mountain and replace power supplies.

A RS-35M in a controlled environment will do the job for a K3.

I added a "hard" crowbar circuit to my Astron.  The overvoltage scheme they
use is not as robost as a hard crowbar.

Jim
W6AIM



-----Original Message-----
From: Elecraft [mailto:elecraft-bounces at mailman.qth.net] On Behalf Of Mike
K2MK
Sent: Thursday, October 29, 2015 6:06 AM
To: elecraft at mailman.qth.net
Subject: Re: [Elecraft] Which of these would make the best power supply for
the K3(S)?

Hi Peter,

I bought the Astron RS-35M for my $4000 K3 in 2008. I've never turned it off
and I've never even given it a second thought. No fan, no RF noise, just
reliable DC.

73,
Mike K2MK



Peter Pauly wrote
> I'm looking at the Meanwell power supplies because they are cheap and 
> seem to be well regarded. I've come up with these two choices, feel 
> free to give more suggestions of other models. I've seen talk on this 
> reflector of supplying more than 13.8V to the K3S so that's why I'm 
> looking at the 15V model.
> 
> 12V Model:   Meanwell NES-350-12
> Voltage range 10-13.5V
> 29A
> 
> 
> 15V Model:   Meanwell NES-350-15
> Voltage range 13.5-18V
> 23.2A
> 
> 
> The 15 volt model would seem to be the obvious choice, except that it 
> doesn't supply the recommended 25 amps. The K3S manual says 22 amps 
> typical though.
> 
> Is there another model Meanwell I should be looking at that has better 
> protection or filtering?
> 
> I've already got an Astron switching power supply, the Meanwell would 
> be a second alternative.





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