Thanks for your kind attention to my problem,.... Now !! I have homebrewed
exciter with 1 watt output using 6CL6 to drive my current linear amp using
pair of 6146B, but in future I want to replace this current liner amp to a
single 4-400A amplifier, and I have prepared power supply for this porpose
with 2500 volt and 0.6A output. I have think, this is not suffience to drive
4-400A with grounded grid configuration. So what the best thing should I do
with my 4-400A and my current exciter with only 1 watt output ?, should it
be increased ??....
------------------------------
>From: Rich Measures <measures@vc.net>
>To: "Firson, YD1BIH" <firson@hotmail.com>, <amps@contesting.com>
>Subject: Re: [AMPS] 4-400A On AB1
To: <amps@contesting.com>
>Date: Tue, 13 Jul 1999 22:01:12 -0700
>
>
>
>
> >
> >Hi All,
> >
> >I am try to build linear amp using single 4-400A, I don't know, how much
> >drive required for 4-400A in class AB1..Any body could describe me, how
>much
> >is it ??.
> >
>? With 4kV on the anode and 800v on the screen, it takes about neg. 140v
>on the grid to make 75mA of ZSAC. . With a 200-ohm grid termination R
>and a 1 to 2 bifilar input transformer, 140 p-v works out to about 50w of
>drive. For best stability, ground the screen direct to the chassis and
>DC-float the cathode. There's a circuit on my Web site.
>
>- cheers, Firson
>
>
>Rich...
>
>R. L. Measures, 805-386-3734, AG6K, www.vcnet.com/measures
>
>
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