Infrared forwarding
2016-08-23
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Application background
The output of all infrared remote control devices are used to generate the pulse amplitude modulation of the 38 - to 40kHz by encoding after the serial data is used. If the measurement of the modulated wave is directly, the instruction cycle of single chip microcomputer is the S (s) level, and the pulse width of the pulse is only 20. Therefore, we must carry on the demodulation of the modulated wave first, and then measure the waveform of the demodulation. The infrared remote control receiver chip CX20106 can be completed on the remote control signal of preamplifier and limiting amplifier, band-pass filter, peak detection and waveform shaping, and a simple external circuit can complete the modulated wave demodulationKey Technology
Infrared transponder control appliances, first of all to is to code, the home appliance remote controller to control the alignment of the infrared transponder, the remote control function key leac
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