50kHz FM optical receiver circuit

  
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This circuit is used in impulse speed modulation system. In this system, transmitter change impulse speed of modulated beam in optical fiber, let it change around 50kHz center frequency. L14G2 optical transistor convert molulated light to radio-frequency signal. The radio-frequency isusedfor demodulating. It can recover original audio frequency signal..
50kHz FM optical receiver circuit - schematic




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