Microphone Amplifier Module

This circuit based on a very simple single transistor amplifier which can use with any power amplifier. very low noise, 45dB stage gain. Input impedance: 2700 Ohm.


Parts:-

R1______________1M2  1/4W Resistor
R2______________5K6  1/4W Resistor
R3______________1K   1/4W Resistor
C1,C3___________4µ7   63V Electrolytic Capacitors
C2____________100µF   25V Electrolytic Capacitor
Q1____________BC550C  45V 100mA Low noise High gain NPN