[Amps] Re: GU-84b: Drive power required for full power output ?

[Frank Goenninger]

Hi again:

I initially intended to ask if about 1A of input current will be enough
to really get reasonable power output?

This comes from a simple calc from Pout of the TRX, which is about 100W
producing about 1.4 A of current into 50 Ohms.

Also, for this tube, what type of input circuit would you recommend when
trying to cover all bands up to 30MHz ?

Thx again for all info.

73, Frank DG1SBG


On Sat, 2004-03-20 at 13:18, Frank Goenninger wrote:
> Hi all:
> 
> I have a GU-84b waiting to be deployed in a yet-to-be-built amp. 
> 
> The only datasheet I found states about 2A of cathode current. I plan to
> have it in a grid-driven configuration. Other planned values:
> 
> Ua  = 3 kV
> Ig2 = 400 V
> 
> Questions arising:
> 
> For Class AB1, what is the value for Ig1 ? And what if I plan to run in
> Class A mode ?
> 
> Any hints greatly appreciated. Thx !!!
> 
> 73, Frank