题目内容
Microphone is a sensor that converts sound into an electrical signal. To get the microphone to work, you need to provide a voltage across it using a voltage divider circuit.
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Build the circuit on breadboard. Measure the voltage between the microphone by a multimeter .
Connect the oscilloscope test probe to the circuit. Adjust the setting properly until the shape of the signals is clear.
Measure the peak-to-peak amplitude of the signal.
When you talk into the microphone, the signals you get are small. To make them bigger, you need an amplifier. One possible circuit is an operational amplifier circuit.
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