Tube parameter ?

[woody]

I have been looking at a GS-35b russian triode and have the data sheets but they are in a little different form than what I need. I need the plate resistance, mu and tranconductance how can I convert mutual conductance to tranconductance?

Thanks in advance ,

Woody

 

[James D.]

Hi Woody,

mutual conductance and transconductance are basically the same and are both expressed in mA/V so for the GS-35b it ranges from 25-40mA/V.

I don't know mu or Rp for this tube but using the plate curves at 0V grid bias, inspection gives Rp as 4k so mu would be between 6-10.

Hope this helps

ciao

James

 

[cogsncogs]

Hello

Just to throw out a few formulas:

Rp = u/Gm
Gm = u/Rp
u = Rp x Gm

Wayne 🙂