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 1,000W lamp having good starting-up property by regulating within a specific range the weight of an electrode consisting of an alkaline earth metal tungstate, Y2O3, and BeO ore La2O3. CONSTITUTION:The luminous tube 1 of 1,000W rated power is wound with the starting auxiliary conductor 11 on its periphery and also filled with a buffering metal, Na, and Xe of 100-300 Torr. And, the electrodes 3 provided on both ends are sheated with an electron-radiating substance film containing a tunsgtate of an alkaline earth metal including at least Ba, Y2O3, and at least one of BeO and La2O3. Also, the weight of each electrode 3 with its core wire is regulated to 1.78-2.70g, and the diameter of th core wire and the number of turns of tungsten coil are regulated so that the temperature at rated current of the 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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