My compliments to everyone who replied to Scott's request. Constructive
answers. This is great!
Scott I haven't built one either, I'm still collecting parts for 4
single-band amps. One day I'll need the answer to this question too,
although I have read a lot about it. Reading up on this kind of thing can
give you some confidence, especially when you start to read the same answer
over and over again from source after source.
I think about the most knowledge per page that I have found so far, since
I'm not an engineer really, is the old Eimac book "Care and Feeding of Power
Grid Tubes" - I bought one from someone on this list I think. It's a quick
read and just cuts to the chase.
If you ever wondered why the output power is less than the input power, the
answer has to do with your question. The tank circuit can be efficient or
inefficient and everything in between. Most of the time the design goal is
to pick those components you're asking about so that you maximize the
efficiency of the amp. For my part, I imagine I'll just follow the recipes
of smarter amp builders before me, and use a lot of what's lying around the
shack.
Mark, N5OT
----- Original Message -----
From: "KBØNLY" <kb0nly@mchsi.com>
To: <amps@contesting.com>
Sent: Thursday, February 19, 2009 10:13 PM
Subject: [Amps] Question for All Amp Builders...
Got a question for everyone...
When designing an amp how do you determine the value of the tune and load
capacitor? I have been looking at a lot of designs online for HF and 6M,
i'm currently working on building a 6M myself from a YU1AW design.
Just seems to me there has to be some solid logic behind the values that
these guys put down when they design the schematic for it.
73,
Scott KBØNLY
www.kb0nly.net
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