Could be that C2 or C3 are open. Both are 0.1 and are on the Display Board
and are across the meter. Could cause a dampening problem as you describe.
73
Bob, K4TAX
----- Original Message -----
From: "Henry Pfizenmayer" <pfizenmayer@worldnet.att.net>
To: "Discussion of Ten-Tec Equipment" <tentec@contesting.com>
Sent: Thursday, August 11, 2005 5:22 PM
Subject: Re: [TenTec] Centurion Plate Current Meter
> Mike - I fired up the Centurion -- The new plate meter is well damped --
> With a final plate current of 600 ma it goes up to 667 ma and drops back
> to 600 ma - no undershoot with key up.
>
> The grid / multimeter is not nearly as well damped -- With Ig set at 240
> ma steady state , key down it goes to just about full scale 400 ma , down
> to 160 ma , back to 280 ma , back down to about 180 ma then two or three
> small swings to 240 ma . This is how the old plate meter was . As a
> matter of fact I did not remember the new multimeter being that bad but
> maybe I just did not look at it that closely -- FWIW -- Hank K7HP
>
>
>
> ----- Original Message -----
> From: "Michael Tope" <W4EF@dellroy.com>
> To: <tentec@contesting.com>
> Sent: Thursday, August 11, 2005 7:16 AM
> Subject: [TenTec] Centurion Plate Current Meter
>
>
>>I am checking out a Ten-Tec Centurion 422 (2 x 3-500z)
>> amplifier for a friend. This morning I fired it up on 20 meters
>> (into a dummy load) for this first time. Everything looked
>> good (output power, tuning, etc) except for the plate current
>> meter. For some reason the plate current meter on this unit
>> overshoots horribly (close to full-scale) and then oscillates
>> back and forth a few times (~+/- 200mA) before settling to
>> the key-down reading. Is this normal for this meter? The
>> grid current/multimeter doesn't do this, nor does just about
>> any other meter I ever seen.
>>
>> Thanks,
>>
>> Mike, W4EF...................................
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>
>
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