MIC PRE-AMPLIFIER

This project is a microphone pre-amplifier based on LM358.

DESCRIPTION

This is easy to construct microphone pre-amplifier project using compact electret condenser microphone. The pre-amplifier is important building block of many audio communication systems. Circuit has been built around Op-Amp LM358.

• Power supply : 5 to 12 VDC @ 10 mA
• Output: Gain Approx. 100
• On-Board electret condenser microphone
• Header connector for connecting of power supply input and audio output
• Power-On LED indicator
• Four mounting holes of 3.2 mm each
• PCB dimensions 35 mm x 40 mm

SCHEMATIC

PARTS LIST