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[AMPS] Re: Buffer/Driver Stage for 4-1000 Amp

To: <amps@contesting.com>
Subject: [AMPS] Re: Buffer/Driver Stage for 4-1000 Amp
From: Jan.E.Holm@telia.se (Jan.E.Holm@telia.se)
Date: Fri, 27 Apr 2001 13:44:14 +0200
   
          Forgot to say that in the example below I´m refering to GG
          cathode driven.

          SM2EKM

    ------------------------------------------------------------ 

      No need for buffer stage. With 5-6 kV on 4-1000A it will put
      2.5 to 3 kW without no problem. If more power is wanted just
      add another 4-1000A and there will be another 3 dB of power.
      It´s just messy and tricky to run a driver, I´ve tried it and 
      didn´ like it.

      / SM2EKM

     PS: Best would probably be a dual 4-1000A driven by a 100 W
     exciter, in this case no ALC over shot from exciter will cause
     amp flattoping and splatter etc etc, there will be plenty of elbow
     room inside the possible envelope.

--------------------------

-----Ursprungligt meddelande-----
Från:   ToddRoberts2001@aol.com [SMTP:ToddRoberts2001@aol.com]
Skickat:         den 27 april 2001 01:24
Till:   amps@contesting.com
Ämne:   [AMPS] Buffer/Driver Stage for 4-1000 Amp


I am planning to use one of those 90-100 watt solid-state rigs to drive 
a 
4-1000 amp project. From what I can gather it appears that to be able 
to take 
full advantage of an all grounded-grid/ cathode driven 4-1000 tube ,the 
driver should be able to supply about 150-200 watts of drive. It would 
seem 
the best answer would be to build a buffer/driver stage using perhaps a 
single or dual 811A tubes that could be driven with maybe 25-50 watts 
and 
deliver 100-200 watts of drive to the 4-1000. I was wondering if anyone 
has 
ever  tried this or any suggestions? How about a pair of 811A's running 
class 
A driving the 4-1000 cathode? Thanks for any ideas. 73 Todd Roberts 
WD4NGG .



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