Which indicator power supply furnishes the CRT operating voltages?

Which indicator power supply furnishes the CRT operating voltages?

• A. Low voltage
• B. High voltage
• C. Medium voltage
• D. Ground voltage

Answer: (B)

The voltages that actually drive the CRT’s electron beam come from the high voltage power supply. The CRT requires a high anode voltage to accelerate electrons toward the screen, which creates the image. A low-voltage supply feeds the heater (filament) and other logic or control circuits, but it does not provide the necessary acceleration potential for the beam. Ground is just a reference and isn’t a supply of operating voltages. So, the indicator power supply that furnishes the CRT operating voltages is the high voltage supply.

The voltages that actually drive the CRT’s electron beam come from the high voltage power supply. The CRT requires a high anode voltage to accelerate electrons toward the screen, which creates the image. A low-voltage supply feeds the heater (filament) and other logic or control circuits, but it does not provide the necessary acceleration potential for the beam. Ground is just a reference and isn’t a supply of operating voltages. So, the indicator power supply that furnishes the CRT operating voltages is the high voltage supply.