16-04-2013, 04:07 PM
INVERTING & NON INVERTING AMPLIFIER AND VOLTAGE FOLLOWER
AIM:
To design and set up the following basic op-amp circuits:
1) Inverting Amplifier
2) Non inverting Amplifier
3) Voltage Follower
And find out the frequency response characteristics.
PROCEDURE:
I Inverting Amplifier
1. Construct the inverting amplifier circuit shown in figure.
2. Manually trace the circuit to check the correctness of physical connection.
3. Calibrate the CRO.
4. Apply 1V amplitude, 1 kHz sinusoidal input signal to the amplifier.
5. Observe the input and output waveforms simultaneously on CRO.
6. Compare the phase of input and output signals.
7. Record the output waveform amplitude.
8. Increase the amplitude of the input until distortion occurs at the output.
9. Record the corresponding output amplitudes and plot a graph of the output amplitude vs the input amplitude.
II Non-Inverting Amplifier
1. Construct the non-inverting amplifier as shown in the figure.
2. Apply 1V amplitude, 1 kHz sinusoidal input signal to the amplifier.
3. Observe Vin and Vo at the same time on the CRO.
4. Verify whether the output is in phase with the input.
5. Note down the output voltage by varying the frequency of the input signal.
6. Draw its frequency response characteristics.
III Voltage Follower
1. Wire up the voltage follower circuit.
2. Apply a sine wave of frequency 10 KHz, with amplitude of approximately 1.0 V to the circuit.
3. Observe Vin and Vo at the same time on the CRO.
Confirm that input and output amplitudes are equal.