Crt Clock Schematic

Drafting a CRT (Cathode Ray Tube) clock schematic involves integrating high-voltage power supplies with precise signal generation to drive the electron beam across the screen

Timekeeping Source: (e.g., DS3231 RTC) Ensures accurate time even when power is lost. Crt Clock Schematic

• CRT Display: The CRT display is the heart of the clock, displaying the time in hours, minutes, and seconds.
• Deflection Circuit: The deflection circuit is responsible for controlling the electron beam's position on the CRT display, creating the horizontal and vertical scan lines.
• Sync Circuit: The sync circuit generates the horizontal and vertical sync signals that synchronize the electron beam's movement with the CRT display's phosphor coating.

• Q1, Q2: IRFZ44N or BU508A (MOSFETs) in push-pull.
• L1, L2: Primary windings (center-tapped) on an EFD25 core.
• Secondary: High turns ratio (1:40) with voltage multiplier (Cockcroft-Walton).

Differential Drive

A proper schematic uses differential drive. Instead of one plate at 0V and the other at 100V, you drive them symmetrically: -50V and +50V. This doubles the deflection sensitivity and linearity. Drafting a CRT (Cathode Ray Tube) clock schematic