With this infrared remote control, it is possible to control the load from a distance.The control consists of a transmitter with a transmission frequency of 38 kHz and a receiver with an actuator.A rectangular signal generator is assembled on the 555 chip, the frequency of which can be changed by a variable resistor.It is necessary to set the frequency to 38 kHz.This signal is sent to the transistor 8050 in the load of which an IR LED is installed.The receiver of the IR signal is the TSOP 4838 assembly, which operates at a frequency of 38 kHz.At the output of the assembly, in the absence of a signal, there will be a logical unit, and a logical zero must be applied to the chip.The transistor allows you to do this, it inverts the signal and then the signal goes to the CD4022 chip.Resistor R4 and capacitor C2 serve as an RC chain from the rattle of contacts.By pressing the button on the transmitter, you can alternately light up the LEDs.Instead of LEDs, you can put keys on transistors and switch a powerful load