Digital coding wireless remote control dimming circuit

Relevant key device information applied in this article: TH9801 TWH630 This circuit uses wireless remote control component TWH630/TWH631 and coded four-level dimming integrated circuit TH9801/TH9802. It is composed of a wireless code transmitter and a receiving and decoding controller. Press the transmitter button to control the brightness of the incandescent lamp to change in the order of weak, medium, strong, and off. (a) is the transmitting circuit; (b) is the receiving circuit.