[Amps] grid current issue

[Carl]

In-rush is included in those amps.

Carl
KM1H


----- Original Message ----- 
From: "Roy" <royanjoy at ncn.net>
To: <amps at contesting.com>
Sent: Tuesday, September 01, 2009 9:39 AM
Subject: Re: [Amps] grid current issue


> About:
>
>
> "Your grid shunt resistor is open
>
>
> In a message dated 8/31/2009 2:55:12 P.M. Pacific Daylight Time,
> kb8nnu at yahoo.com writes:
>
> Hello  all...
>
> I have been working on restoring an LK-500 NT to operating  condition and
> it has a funny grid current issue.  When I switch the meter  switch over 
> on
> the front to measure the  grid current, the meter goes  negative...????
> This
> happens when the amp is in RX.
>
> I'm  puzzled....any help would be  appreciated."
>
>
> Or, you have an internal short in a tube -- 3-500Zs are infamous for that,
> especially when no fil in-rush protection is used.
>
> 73,  Roy   K6XK
>
>
>
>
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