论文部分内容阅读
液晶式投影机采用了许多高新技术,所以在信号处理的电路设计上比较可靠,故障率较低。液晶式投影机的常见故障主要集中在灯泡及其点亮灯泡的驱动电路上。灯泡衰老及损坏是所有液晶式投影机都会遇到的问题。 液晶式投影机一般都使用高亮度和高效率的金属卤化物灯泡。它是对高压水银灯加以改良的灯泡。它的发光管内除水银和氩气外,还封入了金属化合物,这些化合物在水银蒸气放电的电弧中混杂着各种金属蒸气。液晶式投影机由于使用了这种灯泡,图像清晰度和色彩效果都十分理想。由于投影机长时间使用,灯泡的温度很高,如果散热条件不好,会
LCD projector uses a lot of high technology, so the signal processing circuit design more reliable, low failure rate. LCD projector common faults are mainly concentrated in the light bulb and lamp drive circuit. Lamp aging and damage are all LCD projector will encounter problems. LCD projectors generally use high brightness and high efficiency metal halide bulbs. It is a light bulb that improves on high-pressure mercury lamps. In addition to mercury and argon gas, it also encapsulated metal compounds, these compounds in the mercury vapor discharge arc mixed with a variety of metal vapor. LCD Projectors With this type of light bulb, image clarity and color effects are ideal. Due to prolonged use of the projector, the lamp temperature is high, if the cooling conditions are not good, will be