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RE: what does double the transconductance do?

Posted by DAK on December 8, 2016 at 17:49:01:
I still don't relate to that term well. I know the definition is Gm = change Iout / change Vin. But when you say that value doubles when paralleling the sections of the 6sn7. In real world terms i don't know what that means.
Or, if Gm doubles while mu stays the same and Rp is halved. I understand what will happen in terms of the math but, in terms of a circuit how does one use that info? thanks for explaining.