[Elecraft] Silent power supply for a K3s

[Ken Winterling]

I use an IOTA DLS-55 SMPS power supply (https://www.iotaengineering.com/
dls55.htm).  It provides 55 amps, doesn’t produce RFI, is audibly quiet,
and rugged.  Mine is mounted under the radio table and is on 24/7/365.. I
never hear it. Iota also makes them in other output currents and voltages.

Ken
WA2LBI


On Sun, Jun 9, 2019 at 3:27 PM Bob McGraw K4TAX <rmcgraw at blomand.net> wrote:

> I find Mark's point very important.   Obtain and use a supply which is
> more than adequate for the service or load.  Thus a 25 amp supply
> feeding a radio drawing 20+ amps will need lots of cooling.   This is
> not the way to do it.   Get a 50 amp supply for a radio drawing 20+ amps
> and the fan(s) will likely never come on.     Go the cheap way and get
> the cheap results.    Do it right and be happy.   Don't be a cheap ham
> and then complain about the product you purchased.
>
> There is more to choosing a power supply than volts and amps. How about
> duty cycle?  And CCS rated supplies vs. ICAS rated supplies.   Humm.......
>
> 73
>
> Bob, K4TAX
>
>
> On 6/9/2019 2:12 PM, Mark Murray via Elecraft wrote:
> > Peter,
> >
> > Check out the high amperage 13,8 volt power supplies offered by Samlex
> > America at the following link, and in particular their 100-amp -plus
> > (continuous) supplies where the fans do not activate for low draws.  You
> had
> > mentioned something about price not being so important.  These ain't
> cheap.
> > 73 de Mark .w2or.
> >
>
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