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AN2747 数据表(PDF) 5 Page - STMicroelectronics |
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AN2747 数据表(HTML) 5 Page - STMicroelectronics |
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5 / 44 page ![]() AN2747 Lamp description 5/44 1 Lamp description New products and devices are being launched in lighting applications and new solutions for these applications are required. High intensity discharge (HID) lamps have become attractive lighting sources for their luminous efficacy and their long life. Figure 2 illustrates the families of electric lighting for which HID lamps are intended. Figure 2. Lamp families In this document we will refer to high pressure sodium and mercury lamps as HID lamps. Figure 3 shows the luminous efficiency for each lamp type. Figure 3. Luminous efficiency of various lamps H HIID D C CF FL L//T TL L LAMPS INCANDESCENT HALOGEN CONVENTIONAL GAS-DISCHARGE MERCURY LOW PRESSURE HIGH PRESSURE HB LEDs SODIUM |
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