This article uses the integrated operational amplifer TDA2822M,infrared tube as a transceiver device,designed and fabricated infrared carrier transmitter and receive circuits to achieve a limited distance of the infrared optical communication.The device can be achieved in the range of 3.0m distance,the receiver can receive audio signals without distortion,while the real-time monitoring by the monitor circuit to the transmitter and the receiver signal conditions,easy to adjust to the optimal operation of the...