-----Original Message-----
From: Phil <PhilHSS@Breathemail.net>
To: Partain, Chuck <Chuck_Partain@Maxtor.com>; Amps (E-mail)
<amps@contesting.com>
To: <amps@contesting.com>
Date: 09 June 2001 12:23
Subject: RE: [AMPS] 4cx250* amp building plans
>
>Chuck,
>
>Your email started my grey matter churning - takes quite some doing!
>
>An amplifier fitting your requirements of two 4CX250B's on HF was detailed
>in the RSGB journal 'Radio Communication' in September 1974, called "A
>self-contained high-power linear amplifier for the hf bands".
More churning of grey matter here. I have an article somewhere which uses 3
x 4CX250s for a 400W output hf amp. Can't remember the author, it was in a
UK magazine. The philosophy was not to try any squeeze every last W/dB, but
to use extra devices since they are so cheap. For real cost/size/weight
saving, the designer went for voltage doubling 240V line both ways to give
+/- 700V to run from, then double isolate the metalwork. I can dig it out
and scan or photocopy it if there's interest.
Steve
--
FAQ on WWW: http://www.contesting.com/FAQ/amps
Submissions: amps@contesting.com
Administrative requests: amps-REQUEST@contesting.com
Problems: owner-amps@contesting.com
|