无 锡 职 业 技 术 学 院 毕业设计说明书(英文翻译) 2 英文 250W high pressure sodium lamp electronic ballast inductance ballasts and comparative analysis of performance and energy-saving High-pressure sodium lamp is a high intensity gas discharge lamp, and its development began in 1955. Now, high-pressure sodium lamp life of up to 10,000 hours, light efficiency is higher than 100 lm / W. High-pressure sodium lamp
无 锡 职 业 技 术 学 院 毕业设计说明书(英文翻译) 2 英文 250W high pressure sodium lamp electronic ballast inductance ballasts and comparative analysis of performance and energy-saving High-pressure sodium lamp is a high intensity gas discharge lamp, and its development began in 1955. Now, high-pressure sodium lamp life of up to 10,000 hours, light efficiency is higher than 100 lm / W. High-pressure sodium lamp