Pre Amplifier for Electret Condenser Microphone



Pre Amplifier for Electret Condenser Microphone

Pre Amplifier for Electret Condenser Microphone


This schematic shows a pre amplifier to be used with Electret Condenser Microphone.


- BC650C can be replace with BC549C transistors.

- The 1kΩ resistor limits the current flowing through the microphone.

- 1kΩ must be replaced by a 2.2kΩ resistor if the supply voltage is above 12V. You can omit this component if you are using a dynamic microphone instead of electret condenser microphone.


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