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红外发射电路的原理是什么
更新时间: 2020-08-16 00:00:00  

红外接收头内部结构主要由光电二极管加红外接收IC组成。

工作原理:光电二极管接收到红外发射管发射出的光信号后转换为电信号,此电信号输入到接收IC内部经过放大,增益,滤波,解调变,整形还原后,还原遥控器给出的原始编码,通过接收头信号输出脚输入到后面的代码识别电路。

关键词: 红外 发射 电路 原理 什么

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