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Low Impedance Microphone Amplifier(TL081)

2015-01-05 02:56  
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This article briefly describes Low Impedance Microphone Amplifier (TL081). This principle is easy to understand, but also very practical. Depth understanding of circuit elements, you can better grasp this principle. In this circuit, you can learn about and purchase these components: TL081.

The circuit is a microphone amplifier for use with low impedance (~200 ohm) microphones. It will work with stabilized voltages between 6-30VDC. If you don’t build the impedance adapter part with T1, you get a micamp for higher impedance microphones. In this case, you should directly connect the signal to C7.

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Figure 1 

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Figure 3 

R1=15kR2= 150kR3= 2k2R4= 820R6= 10kR7= 10kP1= 1MC1= 3k9C2= 100uC3= 22uC4= 4u7C5= 470uC6= 10uC7= 100nC8= 47uUNIPOLARD1= 1N4148U1= TL081CN1= SIL6 

 


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