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| university:courses:electronics:electronics-lab-opamp-comparator [15 Jul 2019 16:51] – [Extra Activities] Pop Andreea | university:courses:electronics:electronics-lab-opamp-comparator [23 Aug 2019 11:39] – amplitude peak-to-peak Pop Andreea | ||
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| Start by shutting off the power supplies and assemble the circuit. As with the summing amplifier circuit earlier, use the second waveform generator output for the DC source Vref , and turn the amplitude to zero and the output offset all the way down so that you can adjust up from zero during the experiment. | Start by shutting off the power supplies and assemble the circuit. As with the summing amplifier circuit earlier, use the second waveform generator output for the DC source Vref , and turn the amplitude to zero and the output offset all the way down so that you can adjust up from zero during the experiment. | ||
| - | Again configure the waveform generator Vin for a 2V amplitude sine wave at 1 kHz. With the power supply on and Vref at zero volts, export the output waveform. | + | Again configure the waveform generator Vin for a 2V amplitude |
| Now slowly increase Vref and observe what happens. Record the output waveform for Vref = 1V. Keep increasing Vref until it exceeds 2V and observe what happens. Can you explain this? | Now slowly increase Vref and observe what happens. Record the output waveform for Vref = 1V. Keep increasing Vref until it exceeds 2V and observe what happens. Can you explain this? | ||
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| === Procedure: === | === Procedure: === | ||
| - | Use the first waveform generator as source Vin to provide a 2V amplitude, 1 kHz sine wave excitation to the circuit. Supply the op amp to +/- 5V from the power supply. Configure the scope so that the input signal is displayed on channel 1 and the output signal is displayed on channel 2. | + | Use the first waveform generator as source Vin to provide a 2V amplitude |
| A plot example is presented in Figure 3. | A plot example is presented in Figure 3. | ||
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| === Procedure: === | === Procedure: === | ||
| - | Use the first waveform generator as source Vin to provide a 6V amplitude, 1 kHz sine wave excitation to the circuit. Supply the op amp to +/- 5V from the power supply. Configure the scope so that the input signal is displayed on channel 1 and the output signal is displayed on channel 2. | + | Use the first waveform generator as source Vin to provide a 6V amplitude |
| A plot example is presented in Figure 6. | A plot example is presented in Figure 6. | ||
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| === Procedure: === | === Procedure: === | ||
| - | Use the first waveform generator as source Vin to provide a 6V amplitude, 1 kHz sine wave excitation to the circuit. Supply the op amp to +/- 5V from the power supply. Configure the scope so that the input signal is displayed on channel 1 and the output signal is displayed on channel 2. | + | Use the first waveform generator as source Vin to provide a 6V amplitude |
| A plot example is presented in Figure 10. | A plot example is presented in Figure 10. | ||
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| === Procedure: === | === Procedure: === | ||
| - | Use the first waveform generator as source Vin to provide a 6V amplitude, 1 kHz sine wave excitation to the circuit and second waveform generator as constant 1V voltage reference. Supply the op amp to +/- 5V from the power supply. Configure the scope so that the input signal is displayed on channel 1 and the output signal is displayed on channel 2. | + | Use the first waveform generator as source Vin to provide a 6V amplitude |
| A plot example is presented in Figure 14. | A plot example is presented in Figure 14. | ||
university/courses/electronics/electronics-lab-opamp-comparator.txt · Last modified: 16 May 2022 15:22 by Doug Mercer