Which component's role is to supply adequate power for the CRT operation?

The role of the power supply card in a CRT (cathode ray tube) display system is critical as it is responsible for providing the necessary electrical power to enable the operation of the CRT. The CRT requires specific voltage levels and current to function correctly, as it relies on high-voltage systems to accelerate electrons towards the phosphorescent screen, allowing images to be displayed.

The power supply card ensures that stable and sufficient power levels are maintained, thus enabling the CRT to exhibit proper brightness and clarity for efficient viewing. Without a properly functioning power supply card, the CRT would not operate effectively, leading to issues such as flickering, dim display, or complete inoperability.

Other components, such as the video card, signal processor, and control panel, have important functions in processing signals, generating video output, and user interaction; however, they do not supply the electrical power required for the CRT's operation.