Simple and practical remote control detector circuit diagram

To test the quality of the remote control, radio listening is commonly used, but the radio can only receive high-order harmonics of the remote control signal. The signal is weak and the detection effect is not ideal. The remote control detector designed and produced in this article is specially used to detect infrared remote controls and other infrared products. As long as it is judged whether an infrared remote control signal is emitted, it is powered by 220V AC, and the sound and light indicators indicate the quality of the detected remote control at a glance, as follows The figure shows a simple and practical remote control detector circuit diagram.