I started experiments with vacuum tube-based logic and decided to implement RS trigger on Double triode 6N3P
Here you can see, how it works in real:
So, It works. I used circuit from the IBM 604 manual and tried to simulate it as a first step:
LT Spice allows me to check all nodes voltages and parts currents. There is no transistors in the real device - I used it just to driver the simulation model.
This is my first 3D-assembled device. It could be better, but...
There is +200V anode supply and -100V grid bias.
Logical levels for this schema - +150V for log.1 and +50V for log.0