This might seem like a stupid question, but is it possible to make a simple dot on an old CRT tube using just the Filament Heater, Cathode, And Final Anode. EX. (No focusing or accelerating anodes.) It is a very small sony 02 JM mono flat picture tube. I have a very small flyback transformer (maybe 5kv ?). All I want to do is just make a simple dot on the screen, dont really care about the deflection coils right now. Thanks in advance, Ray.