The Development of and Electron Gun for 64 cm Color Picture Tube

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  • The development of an Electron Gun for 64cm Color Picture Tube
  • Development of and Electron Gun for 64 cm Color Picture Tube

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To improve the focus performance of middle-sized CPT(Color Picture Tube), a new type of electron gun for 64cm CPT is developed. The new gun is based on the current gun for the large screen CPT. The shield cup of the electron gun for large screen CPT is of a horizontal slit structure which is difficult to be replanted into the middle-sized CPT. So we redesign the shield sub-assembly by adding field controller and correcting electrode. The redesigned gun can be used for the 64cm CPT with no coma-free deflection yoke. The new design improved the focus performance and decreased the cost.

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