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Re: [Amps] GI7B Max Plate and Grid Current??

To: KB0NLY <kb0nly@mchsi.com>
Subject: Re: [Amps] GI7B Max Plate and Grid Current??
From: KD7QAE <KD7QAE@ARRL.NET>
Date: Mon, 02 Mar 2009 10:56:25 -0800
List-post: <amps@contesting.com">mailto:amps@contesting.com>
 From the curves, it looks like Igmax is about 0.5A under normal 
operation and biasing so a .75A meter face would work well.  Max grid 
power dissipation is 26W on this tube.  The curves are on 
http://amp.w4zt.com/gs35b/index.html.


Tomm

KB0NLY wrote:
> Working on scaling my meters today using that Meter program from Tonne 
> Software.  For those that don't know i'm using the GM3SEK Triode Board and it 
> has outputs for Grid and Anode metering onboard, so i'm working on getting 
> those meters ready today.
>
> I can only find that the GI7B has a max Plate/Anode current of .600mA, so 
> figure a 1a scale will be plenty on the Plate Current meter.
>
> What about the Grid Current meter?  I can't find any info showing what the 
> max current is for the Grid on these tubes.  I want to make the scales nice 
> and neat with colored bands showing the normal operating range, a quick 
> glance to see if i got a problem, etc..
>
> Someone on here must know!  None of the english or russian spec sheets that i 
> can find mention grid current.
>
> Thanks and 73,
>
> Scott KBØNLY
>
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