02-22-2017, 10:05 AM
Don't be concerned about the exact voltages on the first half of V100. They are very much affected by the individual characteristics of the 12AT7 installed.
If you have 5V on the cathode and 112V on the plate that is in the range of normal operation. You can try another 12AT7 and see if the voltages get closer to those on the schematic.
If you have 5V on the cathode and 112V on the plate that is in the range of normal operation. You can try another 12AT7 and see if the voltages get closer to those on the schematic.
![[-]](https://philcoradio.com/phorum/images/bootbb/collapse.png "[-]")
