Re: Switching vs Linear Power Supplies

[Jack]

Frank

I finally went for the MFJ-4225V.  It had good reviews AND coincidently a new unit was up for bid on E-bay.  I won it (at just about half price) and I love it.  It is a little noisier than my Astron and I prefer rear panel connections but as a matter of fact, the noise is less than the noise floor on 40M and with headphones there is none at all.  The very small size is a blessing and the front panel variable voltage adjustment is VERY usefull.  One of the best decisions I have made.  I have decided to keep my Astron 70M for back up.

Jack, AE6GC

----- Original Message ----
From: Frank MacDonell <[hidden email]>
To: Jack Regan <[hidden email]>
Sent: Thursday, November 1, 2007 2:08:35 PM
Subject: Re: [Elecraft] Switching vs Linear Power Supplies

Jack - After the research..........What are you replacing the Astron with?
FJM KD8FIP

On 10/3/07, Jack Regan <[hidden email]> wrote:

> I am moving my shack to a new location and was considering repacing my Astron 70M  (70 amps with meters)with something smaller.
>
> I saw some small switching supplies that seemed to do what I wanted but they all have fans.  The last thing I want is more noise in my shack.
>
> Anyway, is there any advantage to a switching power supply (with a fan) vs a linear supply (with no fan) other than the size and weight?
>
> Jack, AE6GC
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--
Frank MacDonell
2408 Hickory Glen
Bloomfield Hills, MI  48304
248-320-8974
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