Power circuit of vacuum phosphor screen, has gain and doubling circuitry that doubles and transfers output direct current voltage to positive pole and grid, and linear amplification circuit that outputs sine wave, to trigger filament

摘要

The power circuit has direct current (DC) power source (70) to output DC voltage. One end of gain and doubling circuitry (80) is connected with DC-power source while other end is connected with positive pole (60) and grid (50) of vacuum phosphor screen. The gain and doubling circuitry is configured to double and transfer output DC-voltage to positive pole and grid. Two ends of linear amplification circuit (90) are connected with DC-power source and filament (40) of vacuum phosphor screen. The linear amplification circuit is provided to output sine wave, for triggering filament.