While the GU91B ( made up as a never registered 4CX1600B for the US market)
is long gone the HB circuit can easily be adapted to the 4CX1500B. Or just
use the various earlier 4CX1000A/4CX1500B circuts in the older ARRL and West
Coast handbooks.
Carl
KM1H
----- Original Message -----
From: "Roger (K8RI)" <k8ri@rogerhalstead.com>
To: <amps@contesting.com>
Sent: Wednesday, November 06, 2013 10:24 PM
Subject: Re: [Amps] where to begin
On 11/6/2013 8:17 PM, Bill Turner wrote:
ORIGINAL MESSAGE: (may be snipped)
On Wed, 6 Nov 2013 21:31:26 -0200, you wrote:
so, do you have any point, link, etc where I can learn about *Design
with valves* ???
REPLY:
The ARRL Handbook is a good place to start. Nearly everything you need is
in
there and when you run across something that's not clear, just ask a
question here. Recent editions are usually available on eBay or
amazon.com.
Don't get one more than about three years old.
If you also get it on disk, it turns searching for a particular topic,
reference, quote, or author from minutes or hours into a few seconds.
Although some of the older ones may have tubes/valves covered in more
detail.
The theory is good, but many of the circuit designs may have a flaw or
two.
Newer books will have newer material although some of the out dated stuff
gets dropped. OTOH they have had a 4CX1600B amp in there for quite a few
years. It's a nice amp but the tube was dropped from production years ago.
They seem to change very little from year to year, but new stuff does get
added so, normally the latest is best and they have been on DVD for quite
a few years. You can install the book, or just copy the files and use a
link to the beginning to start it or click on setup application.
There is an extensive section on Vacuum Tube Basics with the rest of the
chapter evolving into amplifier design.
73 and good luck,
Roger (K8RI)
Good luck and have fun!
73, Bill W6WRT
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