新型液晶投影仪失电保护电路研究与应用  

Research and Application of Power Off Protection Circuit for New Type LCD Projector

作　　者：戴锐青[1] 曹世伟 

机构地区：[1]苏州经贸职业技术学院,江苏苏州215008

出　　处：《企业技术开发》2017年第12期23-25,共3页Technological Development of Enterprise

摘　　要：投影机在使用过程中意外断电的情况时有发生,如常见的有强制关闭电源,外界停电等。此时,机内的热量得不到及时散发容易导致投影机损坏,本电路正是针对此问题而设计。当强制关闭电源时,本电路将给投影仪延时供电,同时,向投影仪发出一个强制关机信号,经过一段时间的保护供电,投影仪关机正常关机,然后,自动切断整机供电。另外,当外界停电,可结合UPS电源对投影仪进行保护。文章内容来自于苏州经贸职业技术学院2017年省级大创项目,同时本电路的创意和设计申报的新型实用专利正在受理中。The projector in the process of accidental power outages occur frequently, such as the common mandatory power, outside power outages.At this time, the heat in the machine cannot be timely distribution; easily lead to closing damage to the projector, the circuit is designed for this problem.When forced to shut off the power, the circuit will delay power supply to the projector, also issued a mandatory shutdown signal to the projector,through time,the projector shutdown normal shutdown,then automatically cut off external power failure, the projector can be combined with UPS power supply of Trade and Commerce 2017 provincial Undergrad design declaration of new practical patent was being uate Practice innovation accepted. the protection of the power supply for a period of the machine power supply.In addition,when the protection.This article came from Suzhou Institute project, at the same time, this circuit creative and

关 键 词：投影仪 失电 保护 

分 类 号：TN946.1[电子电信—信号与信息处理]