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I want to make an audio amplification circuit with electret microphone. A voltage of 5V is obtained at the output terminal.
The simplest circuit is to directly connect a resistor in series, and get the voltage signal by dividing the voltage, either the highest voltage is 5V, and it cannot be reduced to 0. Either the minimum value is 0V, and the maximum value is less than 5V. If it must be 0V to 5V. . To get a single operational amplifier, the multiple need not be too high. As shown in the figure: