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What is CRT tube focusing performance _ hardware Maintenance

Source: Internet
Author: User
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CRT Tube Focusing performance: CRT projector to the input of the source signal decomposition to the R (Red), G (green), B (blue) Three CRT tube on the screen, under high pressure, light-emitting, after the signal amplification and convergence, the large screen display color image. CRT tube Focusing is divided into three kinds of electrostatic focusing, magnetic focusing and electromagnetic composite focusing, the application of electromagnetic composite focus is more common, the advantage of CRT tube focusing performance is good focusing performance, high focusing precision, and can focus and corner focus, so that the projection picture is clear.

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