Mic Preamp Circuit Diagram. First of all we connect a 9v power supply to the circuit. The pinout diagram is shown below.
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It changes the sound to electrical signals before sending to a power amplifier. First of all we connect a 9v power supply to the circuit. Table of contents show all how it works.
The working of the circuit is as follows.
A simple microphone preamplifier based on lm358 is designed in this project. These are the terminals where you can adjust the gain by placing a resistor and capacitor or just capacitor between these terminals. The circuit is very simple contains only few components and can be assembled in few minutes if all parts are available. This way the connections that we make from the microphone to it will make more sense.
