| To: | "Keith Dutson" <kdutson@sbcglobal.net>,"'Jim Brown'" <jim@audiosystemsgroup.com>, <amps@contesting.com> |
|---|---|
| Subject: | Re: [Amps] Switching Power Supplies |
| From: | "Tom W8JI" <w8ji@w8ji.com> |
| Date: | Fri, 14 Jul 2006 17:29:28 -0400 |
| List-post: | <mailto:amps@contesting.com> |
> >I can't imagine why an amateur would want to use a > >switching supply for a > filament. What reason is there to do that? > > I can think of only one: lower travel weight for > DXpedition use. The filament transformer is typically about 5-10% of overall amplifier weight. On a 60 pound amp that's 3-6 pounds. If the switching supply cuts that in half, we save 1-1/2 to 3 pounds. I think the real advantage is being cheap. 73 Tom _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/amps |
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