[Amps] Grid vs cathode driven

[Will Matney]

Peter,

I agree with you, I just wouldn't go to the trouble of the particular circuit when 
one can do it an easier way if one wanted to use a sweep tube. However, as
cheap as the surplus Russian tubes are now, and even the new Chinese tubes,
it would be about as cheap, or cheaper to use them. A couple of 4CX800's makes
a dandy amplifier.

Best,

Will

*********** REPLY SEPARATOR  ***********

On 8/4/06 at 6:19 PM Peter Chadwick wrote:

>Will said:
>>Why would one want to go through all the trouble with sweep tubes on that
>when
>10 of them can be ran grid driven? The Galaxy amateur amp was a good
>example
>of this. I have built them using as high as 10 in G-G in parallel. No
>neutralization
>was necessary, and they ran just fine. I've used as high as 4 grid driven,
>they did
>ok too. I'd try this first before do that arrangement.<
>Quite. I was merely trying to make the point that tubes that ran high
>current at low voltage gave a better chance of getting a useable wideband
>xfmr.
>
>I don't like sweep tubes anyway.
>
>73
>Peter G3RZP
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