[Elecraft] Power Supplies

[Joe Subich, W4TV]

I have a pair of RS-35A - one for each K3 (yes, it's overkill) one of
which is 20 years old - with nary a problem.  In addition, I have an
RS-12A that I use for miscellaneous "12V loads" and low power testing.

Astron "RS" series analog supplies were somewhat unreliable 35 years
ago when the standard pass transistor was the 2N3055 and *sockets*
due to heating and the limited current capability but that was a long
time ago and has been resolved by the move to the 2N3771 and better
installation/manufacturing techniques.

Like any device, the supply should be cleaned/maintained on a regular
basis ... pay special attention to the screws on the capacitor and
the output studs as they tend to loosen over time.

73,

    ... Joe, W4TV


On 5/6/2012 12:09 PM, Keith Heimbold wrote:
> I had a samlex 20 amp power supply and replaced it when I had some issues with it and my back up rig, FT920 which gave the small switching supply fits.
>
> I have since bought two RS35 Astrons one which has the meters and voltage pot and they have been great.
>
> I also have a small powerwerx 35 amp switching supply for traveling.  It is super small and seems to work great.
>
> Keith
> AG6AZ
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