關(guān)鍵詞:音頻轉(zhuǎn)發(fā),紅外線,放大,濾波,光敏電阻,話筒、可控硅、整流電路、與非門 Audio IR Repeater ABSTRACT The first part of electronic practice design of a infrared munication transceiver system. The system produced by the signal module, sending infrared light and infrared optical receiver modules of three parts, implementation for generating, sending, receiving, and implementation of signal filtering to eliminate interference to the signal and power system uses the universal circuit board and Optical Transceiver diode and related noise reduction circuit made to enlarge. The final system can use the audio signal in TV or radio, mp3 audio input signals, such as l