Crt Clock Schematic __top__

module for high accuracy, or sync via Wi-Fi (NTP) if using an ESP32. Signal Generation (X-Y Deflection)

When the microcontroller finishes drawing one digit and needs to move to the next, it pulls a dedicated blanking pin high. This digital signal drives a fast, high-voltage switching transistor linked directly to the CRT's control grid (G1). The transistor drops the grid voltage deep into negative territory, instantly cutting off the electron beam. Once the X and Y deflection voltages stabilize at the location of the next digit, the blanking circuit turns the beam back on. Critical Troubleshooting & Layout Guidelines Crt Clock Schematic

To display time, the schematic must control three distinct variables: module for high accuracy, or sync via Wi-Fi