Plastic Remote Control 47 keys for LG 43UP7500PTZ / LG 43UP7500PTZ / LG 50UP7500PTZ TV
Infrared remote control is the most widely used means of communication and remote control. Because infrared remote control devices have the characteristics of small size, low power consumption, strong function and low cost, infrared remote control is also used in other small electrical devices such as tape recorders, audio equipment, air conditioners and toys, after color TVs and video recorders. In industrial equipment, under the environment of high voltage, radiation, toxic gas and dust, infrared remote control is not only completely reliable but also can effectively isolate electrical interference.
Infrared remote control system: the general infrared remote control system is composed of two parts, i.e. transmitting and receiving. The special integrated circuit chip for coding / decoding is applied to control the operation, as shown in Fig. 1. The transmitting part includes keyboard matrix, coding modulation and LED infrared transmitter; The receiving part includes optical and electrical conversion amplifiers, demodulation and decoding circuits