07/28/2026
Part 3
12ax7 1-plate 2-Grid 3- cathode 6-plate 7-Grid 8-cathode
Octal power tubes 3-Plate 4- Screen Grid 5-Grid 8-Cathode
High voltages on Plates
Low voltage or no voltage on grids. Small voltage on Cathodes.
This is widely general knowledge and many exceptions exist.