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提高显象管产品质量是各显象管生产厂共同关心的问题。我厂经过多年探索,找到了一种即能快速判定产品质量水平,又能启示或找出影响产品质量的工艺环节。要确切评定显象管的质量水平,最可靠、也是最笨的办法是进行常规寿命试验。就是将显象管模拟在正常使用条件下进行工作,如对35厘米(14英寸)35SX1B黑白显象管,加速极电压U_(A1)加100V,屏幕电压U_(A4)加12kV,电子束电流调到30μA,进行光栅扫描。先在0、50、125、250、375、500小时各个测试点测量有关电气参数,以后每隔
Improve the quality of CRT products are the common concern of all CRT production plant. After years of exploration of our factory, we found a product that can quickly determine the level of product quality, but also to enlighten or find out the impact of product quality process. To accurately assess the quality of the picture tube, the most reliable and also the most stupid way is to conduct routine life test. The CRT is operated under normal conditions of use, such as a 35 cm (14 inch) 35SX1B monochrome cathode ray tube, an accelerating voltage of U A1 plus 100V, a screen voltage of U A4 plus 12 kV, Transferred to 30μA, raster scan. The first 0,50,125,250,375,500 hours each test point to measure the electrical parameters, after every