题目内容
This section is an investigation of microphones , audio signals, and amplifiers, intended to develop your circuit design skills and giving you experience of using the oscilloscope to monitor signals in a circuit.
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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.
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.
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