Here's a simplified, combined schematic:
Working with CRTs presents unique hazards that must be addressed at the schematic and prototyping stages. High Voltage Hazards Crt Clock Schematic
This is the brain. You do not store the entire clock face in memory; you store a of coordinates. Here's a simplified, combined schematic: Working with CRTs
To draw a clock face, the schematic must handle . CRT Clock Build using an RCA Oscilloscope To draw a clock face, the schematic must handle
, build the deflection and Z-axis first and test using an oscilloscope in XY mode. Then add the HV supply. And always – one hand in pocket when probing live circuits.
[ Power Supply ] ---> High Voltage (1kV+) to CRT Anode | [ Microcontroller ] ---> [ Dual DACs ] ---> [ Deflection Amplifiers ] ---> CRT Yokes/Plates | [ Real-Time Clock ]
Mixes of digital high-frequency signals and analog high voltages create immense noise. Connect all ground paths to one single physical point near the power supply.