One kind of wireless remote control circuit


Posted on Feb 6, 2014

The remote control transmitter is composed of the DTMF generator and the FM transmitter circuit. Here we use one piece of UM91214B phone specific IC to produce the DTMF signal, the 3V power supply voltage is supplied by the 3V zener tube D1.The transmitter circuit is composed of the transistor T1 and the external circuits, the tuning circuit L1 and VC1 is..


One kind of wireless remote control circuit
Click here to download the full size of the above Circuit.




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