Posted by Thrint [ 64.12.116.65 ] on July 25, 2005 at 19:44:20:

From a few cascode-able valves like 6BQ7 and 6DJ8, the schematic shows a pair of triodes stacked on top of each other and the upper grids attached to a voltage divider reference.

The composite valve behaves like a pentode. So what happens if you sub the top triode for a pentode? Use the same voltage divider for the control grid, dropping R and bypass to its cathode for g2 and what does it do now?

How to model this composite? I know how to gneerate the composite's plate curves for any pair of triodes, but the triode/pentode combo looks a bit more complex...
thanks,
Douglas

Replies:

• Penscodes? - Damir 05:39:23 07/26/05 (2)
  • Re: Penscodes? - Damir 07:38:02 07/26/05 (1)
    • Re: Penscodes? - Thrint 18:26:50 07/31/05 (0)