LabGuy's Electrostatic CRT Project: Driving a 1937 Radar Tube with a Tiny TV
Electrostatic Cathode Ray Tube Project 1 (2014)
LabGuy's World documents a project to display television pictures on electrostatic deflection CRTs using Eric Schlaepfer's high-voltage driver boards and the Tiny TV Mark 2 rasterizer. The build successfully drives several vintage tubes, including a 3JP7 radar display and a 1937 RCA 913, revealing quirks like P7 phosphor's long persistence and a common wiring mistake that destroys transistors. The project showcases the challenges and rewards of repurposing antique oscilloscope tubes for modern video.
The P7 screen images in the photos look grey. They are. This is because both the blue and the yellow light are summing together to produce white light.