Crt Clock Schematic !exclusive! 📌 📥

The schematic reveals a Character Generator subsystem. In discrete designs, this often takes the form of a Read-Only Memory (ROM) chip or a complex arrangement of logic gates (an "AND-OR" matrix).

When moving the beam from the end of the minute hand to the start of the second hand, the Z-axis must be turned off before the DAC changes value. A 1µs delay is required; otherwise, "flyback lines" (ghost diagonal streaks) will appear across the screen. Crt Clock Schematic

A CRT is a vacuum capacitor. The anode cap requires +500V to +2kV (for small tubes) to accelerate electrons toward the screen. The schematic reveals a Character Generator subsystem