High-pressure sodium lamp
专利汇可以提供High-pressure sodium lamp专利检索，专利查询，专利分析的服务。并且PURPOSE:To obtain a long-life 150W lamp having good starting-up property by setting up within a specific range the weight of electrode with an electron-radiating substance film consisting of an alkaline earth metal tungstate, Y2O3, and BeO or La2O3. CONSTITUTION:The luminous tube 1 of 150W rated power is wound with the starting-up auxiliary conductor 11 on its perihery and also filled with a buffering metal, Na, and Xe of 100-500 Torr. And, electrodes 3 provided on both ends are sheathed with an electron-radiating substance containing tungstate of an alkaline earth metal containing Ba at least, Y2O3, and at least one of BeO and La2O3, and the weight of each electrode 3 with its core wire is regulated to 0.56-0.82g. Also, the diameter of the core wire and the number of turns of tungsten coil are regulated so that the temperature at the rated current of each electrode 3 becomes 1200- 1500 deg.C.，下面是High-pressure sodium lamp专利的具体信息内容。
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