How should a proper schematic configuration of a cathode-driven Amp
be done with a Tetrode ?
I've seen a couple of variations:
1) Both grid, Screen grounded
(guess its a common way of solving it....
Also described in the book:
Power Vacuum Tubes Handbook, 2nd ed)
2) Grid to ground , Screen to DC-screen -voltage
(a few russian schematics)
3) Grid to Cathode, Screen grounded
(from AG6K's excellent site)
Which one is the 'proper' way to do it?
Does it depend on what kind of tube being used?
SM0EJR /Joe
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