Condenser Microphone Amplifier Circuit Diagram. The schematic for simple microphone to speaker circuit is given below the circuit is exactly same as shown in the lm386 datasheet from texas instruments. The audio amplifier circuit needs 6 24v as per amplifier specification.
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Condenser mike pre amplifier circuit. Connect the positive terminal of the mic with 10 k resistor in series with the positive supply and the negative terminal of the mic is directly connected to negative supply or ground. The schematic for simple microphone to speaker circuit is given below the circuit is exactly same as shown in the lm386 datasheet from texas instruments.
Connect the positive terminal of the mic with 10 k resistor in series with the positive supply and the negative terminal of the mic is directly connected to negative supply or ground.
We removed the 10k pot section and added additional bias circuitry of the microphone amplifier. The schematic for simple microphone to speaker circuit is given below the circuit is exactly same as shown in the lm386 datasheet from texas instruments. The 0 1μf capacitor c1 stops the dc component of the transmission allowing the ac input from the microphone to enter the transistor q1 through its base. The audio amplifier circuit needs 6 24v as per amplifier specification.
