Audio Gambar Skema Condenser Microphone Amplifier | Audio Circuits

Wednesday, October 12, 2011

Audio Gambar Skema Condenser Microphone Amplifier

Gambar Skema Condenser Microphone AmplifierGambar Skema Condenser Microphone Amplifier

The amplifier has an adjustable gain, which is performed by. R1 (a 1 Mega Ohm variable resistor). It controls the feedback of the 741 opamp, which in turn drive a 2N2222 output transistor.

The circuit takes the audio signal rom the condenser microphone & amplifier it, so you are able to use the microphone as the input to some device which wouldn't normally accept microphone level signals (which are very low).

Parts List:
  • U1 - LM741 op amp ic
  • R1 - 1 megohm resistor
  • R2, R3 - 6.8k ohm resistor
  • R4 - 1k ohm resistor
  • C1, C2 - 0.47uF ceramic capacitor
  • MIC1 - electret condenser microphone

All resistors are 5 or 10 percent tolerance, 1/4-watt. All capacitors are 10 percent tolerance, rated 35 volts or higher.

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