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Commonly used the wireless remote control system of launch and receive two parts

Jan 23, 2017

Launch section is divided into two types, namely, remote control and emission module, remote control and remote control module is for use, the remote control can be used independently as a machine, external lead wiring pile head; And remote control module to use when a component in the circuit, according to the pin definition for application, the advantage of using the remote control module can be seamless connection and application circuit, small volume, low price and everything, but the consumer must really know the circuit principle, otherwise or with the remote control is convenient.

Receiving part in general is divided into two types, namely the superheterodyne and super-regenerative reception mode, also called super-regenerative super-regenerative demodulation circuit detection circuit, it is actually work in the regeneration of the intermittent oscillation condition detection circuit. Superheterodyne demodulation circuit is the same as the early, it is to set up a local oscillation circuit to generate oscillation signal, and receives the carrier frequency signal after mixing, intermediate frequency (usually 465 KHZ) signal, the intermediate frequency amplifier and detection, demodulation of the data signal. Due to the carrier frequency is fixed, so its circuit is simpler than the radio. Superheterodyne receiver, high sensitivity, stable and relatively good anti-jamming capability; Super-regenerative type of receiver is small in size, the price is cheap.