Your schematic hinges entirely on the type of CRT tube you select. Tubes generally fall into two categories: Magnetic Deflection (Television Tubes)
The power supply is the foundation of the schematic. It must deliver multiple distinct voltages: Crt Clock Schematic
Parts arrived in small cardboard boxes—vacuum tubes with their glass necks glowing faintly under her lamp, a battered CRT from an old oscilloscope someone had salvaged, a dial machined from brass. The transformer hummed awake with a soft, satisfied buzz. When she first fed power through the circuit and the tubes glowed like tiny moons, she realized she had not just built a clock; she had lit a small sky. Your schematic hinges entirely on the type of