[Amps] "Tubes 201" - How Vacuum Tubes Really Work

[Keith Dutson]

I am totally lost on this excessive grid current discussion.  If there is a
resistor or fuse tied between the grid and chassis and it blows, the grid
obviously has a potential above or below ground.  Which is it?  Can it be
either depending on the fault?

73, Keith NM5G

-----Original Message-----
From: amps-bounces at contesting.com [mailto:amps-bounces at contesting.com] On
Behalf Of Will Matney
Sent: Monday, July 24, 2006 8:59 PM
To: amps at contesting.com
Subject: Re: [Amps] "Tubes 201" - How Vacuum Tubes Really Work

Tom, are you saying Terman was lying in the 1st edition of his handbook? I
don't need to re-write anything, I have it here in print. I have a question,
how can an element being bombarded by or gaining electrons be positive (over
0 V, +0.1 volt DC or greater)? Is Termans satements about equilibrium hog
wash?

Best,

Will

*********** REPLY SEPARATOR  ***********

On 7/24/06 at 9:23 PM Tom W8JI wrote:

>>>Will wrote:
>> That's slightly re-worded from my edition as he never mentions 
>> positive.
>
>I have a later edition. Later editions almost always have improvements.
>
>> However, what he's meaning about positive, and he aludes to this in 
>> other parts of the chapter, is really the grid being less negative or 
>> more positive as compared to another element, so it will accept 
>> electrons.
>
>You should rewrite his text then if you know what he meant to say.
>
>73 Tom
>
>
>
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