Hi folks,
What is the reason the Fisher 30-A uses (very) different valued grid
resistors for the power tubes?
- R9 = 2K2 for V2
- R4 = 33K for V3
https://www.flickr.com/photos/derekv...n/photostream/
A later (or earlier?) 30-A version has no grid resistors, also no balance
circuit for the phase inverter.