Lightwave voice communication transmitter circuit diagram
Source: InternetPublisher:国民男神经 Keywords: transmitter circuit diagram voice communication Updated: 2021/01/24
This transmitter uses a 741 op amp as a high-gain audio amplifier, which is driven by a tiny phone. The output of the 741 is coupled to Q1, which acts as a driver for the LED light. Potentiometer RI is the gain control of the amplifier. For best emission performance, tiny trimmer resistor R6 allows adjustment of Q1 base bias.
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