本科毕业设计说明书电视视力保护灯电路设计学院:机电工程学院专业:农业电气化与自动化姓名: XX 学号: XXXXXXX 指导教师:李奋荣职称:副教授设计完成日期:二Ο一三年六月设计概况本文主要研究了一个简易的电视机视力保护灯的设计,主要有交流信号拾取电路、信号放大电路、整流倍压电路、光控电路、可控硅开关电路和 12v 电源等组成。在电视机打开时,背景照明灯自动点亮;关闭电视后,灯又能自动熄灭;而在白天看电视时,灯能自动封锁不会点亮,到了夜晚时又能自动打开。本系统简单实用,成本低廉,具有较高的实用价值。关键词: 信号拾取电路信号放大电路可控硅开关光控电路电源 Abstract This paper studies the design ofa simple TV eye protection lamp, AC signal pickup circuit ,thesignal amplification circuit , rectifier voltage doubler circuit , light control circuit thyristorswitch circuit and 12v power . The TV is turned on, the background lights turn on automatically ; after the TV is turned off , the lights can automatically extinguished ; watching TV during the day, the lights can automatically block does not light up, while automatically open to the night . The system is simple and practical, low cost, and has a high practical value . Keywords: S ignal pickup circuit S ignal amplification circuit T riac L ight control circuit P ower 目录 1引言......................................................................................................................................... 1 2设计构思................................................................................................................................. 1 3电视机视力保护灯的设计..................................................................................................... 3 单元电路的设计............................................................................................................. 3 电源电路..................................................................................................................... 5 信号拾取电路............................................................................................................. 5 信号放大电路............................................................................................................. 6 信号整流电路............................................................................................................. 7 可控硅开关电路........
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