04-27-2026, 10:03 PM
Thanks Mike, I mis-read the pot value, my bad. One thing that is still confusing me on the Model 38: the schematic shows the 6 pin connector for the input voltages from the battery. It shows 6 inputs. The ground and 2v is clear. But there are two B+, one at 135v and one at 67-1/2v. And two C one at -3v and one at -7v.
I get the different needs for plates vs screen grids, and different negative bias levels. But doesn’t this imply a need for 5 different input voltages? I’m not certain every pin is utilized on the connector I can double check that. But if there is a need for 5 input voltages what power supply provides that?
I get the different needs for plates vs screen grids, and different negative bias levels. But doesn’t this imply a need for 5 different input voltages? I’m not certain every pin is utilized on the connector I can double check that. But if there is a need for 5 input voltages what power supply provides that?
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