电气专业英语演讲

主题 1 第 1 点 第 2 点主题 2 第 1 点 第 2 点主题 3 第 1 点 第 2 点主题 4 第 1 点 第 2 点 is a new type of solid-state light sourceTraditionalFlux LEDOrdinary LEDFuture LEDBig power LEDDevelopment+-LEDs core is a P-N junction,just it can give out light. LEDTraditional lampThe advantage of LED1. Long life （100100，000Hrs000Hrs）2. Low driving voltage （1.81.84.5V4.5V）3. Low power consumption （4040100mW100mW）4. High light speed （1010-1-11010-3-3us us ）5. Wavelength stability6. SmallA. Direct insertion LED ( LED ( 直插式直插式LED )LED ). SMD(Surface mount diode. SMD(Surface mount diode）表面贴装二极管表面贴装二极管 、 Flux LED Flux LED（食人鱼）（食人鱼）D D、Power LEDPower LED E E、 Display LED( Display LED(数码管数码管) )F F、 Dot matrix display Dot matrix display（点阵）（点阵）1.Apply in automobile2.Construction decoration Britain pavilionSunnyvaleDo we know how to control LED ?Here is a question : Thats allThank you for watching !