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Lab Brief 3 - Experiment 3 Generating Observing and Hearing...

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Experiment 3: Generating, Observing, and Hearing Time-Varying Signals Shayan Rizvi Department of Electrical and Computer Engineering, University of Connecticut, Storrs, Connecticut 06269 An oscilloscope was used to measure the DC voltage. The power supply was set to three different voltages of 1.98 V, 2.5 V and 3.01 V. At the initial power supply voltage levels the oscilloscope measured voltages of 2 V, 2.5V and 3V respectively. The function generator was used to produce sinusoidal voltages made up of various amplitudes and frequencies. The different frequencies used were 10 Hz along with amplitude of 1.5 and 2 V/Amp. Also the frequency of 100 Hz was used along with amplitude of 2 V/Amp. The attenuation control of the function generator was used and it brought down our V in of 3 V/Amp by a factor of 20db. We measured the peak to peak amplitude of the speaker to be 4.4(divisions)*(200mv) = 880 mV/Amp and the peak to peak amplitude of the microphone to be 2.2(divisions)*(20mv) = 44 mV/Amp.
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