477-566MHZ micropower wireless remote control transmitting, receiving circuit
A micro-power wireless and transmitting circuit technology, applied in the field of wireless remote control, can solve the problems of motor spark interference and poor load characteristics, and achieve the effect of overcoming the influence of frequency and strong anti-interference.
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[0015] Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:
[0016] Depend on figure 1 , figure 2 It can be seen that the micro-power wireless remote control transmission circuit of the present invention includes: an operating unit 1 for sending on and off signals; a logic control unit 2 for logically processing the control signals sent by the operating unit, without causing false control , out of control; a coding unit 3, with 12-bit tri-state address pins, used to support up to 531441 (or 3 12 ) codes of addresses can greatly reduce code conflicts and illegally scan the codes so that the possibility of matching has strong anti-interference; a reference signal unit 4 uses a surface acoustic wave (SAW) frequency that is very stable, Reliable 477-566MHZ high-frequency signal, which is less affected by temperature and load impedance changes, is used for non-directional transmission. This frequency band m...
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