DTMF infrared remote control circuit

  
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The DTMF infrared remote control circuit. The DTMF encoded signal can be decoded by the special decoder and the PLL audio decoder LM567. But the DTMF encoded signal which is decoded by only one decoder, has only one frequency, one group of control signal is composed by two decoder`s output frequency. The infrared remote control signal which is produced by th..
DTMF infrared remote control circuit - schematic




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