Tube DIY Asylum: Re: C3g as driver for 300b by Thorsten Do It Yourself (DIY) paradise for tube and SET project builders.

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Posted by Thorsten (M ) on June 19, 2006 at 16:02:36

In Reply to: Re: C3g as driver for 300b posted by IslandPink on June 19, 2006 at 14:14:21:

Hi,

> I'm surprised T has said nothing about using it as a pentode yet .

Look at the curves and try to get reasonable swing (200V PP) into 10K from it (or any sensible load, actually).... Virtually impossible. Compare the C3m.

High Mu Pentodes just cannot swing enough voltage on the anode for driver stages. They are excellent choices however to produce a lot of gain into low impedance loads, making them ideal for low level high gain stages (Phono- or Microphonepreamp comes to mind).

Ciao T

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