Single button dual channel infrared remote control circuit

The circuit consists of a single-button infrared transmitter, an infrared receiving and channel decoding circuit, and a control circuit. Among them, the single-button infrared transmitter is composed of a four-two input NAND gate 74HC00. As shown below: the infrared receiving and channel decoding circuit is composed of PH302 and CX20106. PH302 is an infrared receiving tube; CX20106 is a signal processing circuit. Two double The steady-state electronic switch forms a two-channel switch control circuit. The analog switch S2, gate F3 and its surrounding resistor-capacitor components form a switch circuit controlled by short pulses. The switch circuit controlled by long pulses consists of S4, F6 and their surrounding components. switching circuit.