QST Dec. 1958 pg. 32-35+184 have a rather good theoretical description
of this topic with some practical examples
I have this article in photocopy. I could scan it, but I am not sure if the
quality of the copies is good enough. If someone is interrested, please
say so and I will try. And if someone could host the copies everyone
could get access.
OZ5TG, Verner
----- Original Message -----
From: "Jon Ogden" <na9d@speakeasy.net>
To: "Bill Coleman N2BC" <n2bc@stny.rr.com>; <amps@contesting.com>
Sent: Friday, May 25, 2001 6:11 AM
Subject: Re: [AMPS] Input impedance
>
> on 5/24/01 10:28 PM, Bill Coleman N2BC at n2bc@stny.rr.com wrote:
>
> > How does one determine / calculate the input impedance in a cathode driven
> > GG circuit? A pointer to a book / article would be great.
>
> I think there is generally a driving impedance specified by the tube data.
> At least this is where I have gotten mine from. Bill Orr's book has a table
> of various tubes with the drive impedance specified.
>
> In my "limited" experience, I have generally seen this information provided
> in app notes from the manufacturers. I am sure it can somehow be
> calculated, but since I've never had to do it, I am not sure how it should
> be done without sitting down and spending some time on it. Perhaps someone
> else can answer it better.
>
> What tube are you looking for data on? I'll see if it is in any of my
> books/literature.
>
> 73,
>
> Jon
> NA9D
>
> -------------------------------------
> Jon Ogden
> NA9D (ex: KE9NA)
>
> Member: ARRL, AMSAT, DXCC, NRA
>
> http://www.qsl.net/ke9na
>
> "A life lived in fear is a life half lived."
>
>
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