Electret Microphone Pre-Amplifier

Electronic Schematics > Audio > Electret Microphone Pre-Amplifier

---

This circuit will be useful if you have an electret microphone that produces a low audio (sound) level and you want to connect it to an amplifier or something like it. The circuit will boost the microphone output voltage to obtain an acceptable signal level. Just adjust the R5 potentiometer to obtain the desird gain. Note that the R5 value is dependent on your gain need.

Title: Electret Microphone Pre-Amplifier
electronic circuit
Source: unknown
Published on: 2005-08-27
Reads: 3913
Print version:

Other electronic circuits and schematics from Audio

---

• 3 Channel Spectrum Analyzer

• Audio Visual Indicator for Telephones

• Bass-treble tone control circuit

• Classic Audio Mixer

• Infrared Head Phones

• Improved 3 Transistor Audio Amp (80 milliwatt)

• 10W Mini Audio Amplifier

• Speech Recorder

• Digital Volume Control

• 3 Transistor Audio Amp (50 milliwatt)