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Practical: 1

Aim: To study RC low pass filter.

Apparatus:

Resistor

Capacitor

Oscilloscope

Function Generator

Oscilloscope

Circuit Diagram:

Observation Table:

Vin = ___________________V

R = _____________________

C = ______________________

Sr.No Frequency Vout Vout/Vin Gain in dB

1

2

3

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4

5

6

7

8

9

10

Conclusion:

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Practical: 2

Aim: To study RC high pass filter.

Apparatus:

Resistor

Capacitor

Oscilloscope

Function Generator

Oscilloscope

Circuit Diagram:

Observation Table:

Vin = ___________________V

R = _____________________

C = ______________________

Sr.No Frequency Vout Vout/Vin Gain in dB

1

2

3

4

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5

6

7

8

9

10

Conclusion:

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Practical: 3

Aim: To study Colpitts oscillator.

Apparatus:

1. Analog board of AB67

2. DC power supply +12v from ST2612 Analog Lab

3. Oscilloscope

4. Patch code

Circuit Diagram:

Procedure:

Connect +12v dc power supply at their indicated position from ST2612 Analog Lab

1. Connect a patch cord between points a and b and another patch cord between points b

and g1.

2. Switch ON power supply.

3. Connect Oscilloscope between points f & g2 on AB67 board.

4. Record the value of output frequency on Oscilloscope

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5. Calculate the resonant frequency using equation.

6. Compare measured frequency with the theoretically calculated value.

7. Switch off the supply.

8. Remove the patch cord connected between points a and b and connect it between

points a and c.

9. Remove the patch cord connected between points d and g1 and connect it between

point e and g2

10. Follow the procedure from point 4 to 8.

11. Connect +5v dc power supply instead of +12 supply and follow the procedure from

point 2 to point 11.

Observation table

Patch cord connected across A

and B

Patch cord connected Across

A and C

Practical Resonant Frequency

Theoretical Resonant

Frequency

Conclusion

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Practical: 4

Aim: To study Hartley oscillator.

Apparatus:

1. Analog board of AB68

2. DC power supply +12v from ST2612 Analog Lab

3. Oscilloscope

4. Patch code

Circuit Diagram:

Procedure:

Connect +12v dc power supply at their indicated position from ST2612 Analog Lab1. Connect a patch cord between points a and b and another patch cord between point b

and d & ground

2. Switch ON power supply.

3. Connect Oscilloscope between Vout & ground on AB68 board.

4. Record the value of output frequency on Oscilloscope

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5. Calculate the resonant frequency using equation.

6. Compare measured frequency with the theoretically calculated value.

7. Switch off the supply.

8. Remove the patch cord connected between points a and b and connect it between

points a and c.

9. Remove the patch cord connected between points d and ground and connect it between

points e and ground.

10. Follow the procedure from point 4 to 7.

Observation Table:

Patch cord connected across A

and B

Patch cord connected Across

A and C

Practical Resonant Frequency

Theoretical Resonant

Frequency

Conclusion:

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Practical: 5

Aim: To study Wien bridge oscillator.

Apparatus:

1. Analog board of AB66

2. DC power supplies +12v,-12v from ST2612 Analog Lab

3. Oscilloscope

4. Patch code

Circuit Diagram:

Procedure:

Connect +12v dc power supply at their indicated position from ST2612 Analog Lab

1. Connect a patch cord between points a and b and another patch cord between point b

and d & ground

2. Switch ON power supply.

3. Connect Oscilloscope between Vout & ground on AB68 board.

4. Record the value of output frequency on Oscilloscope

5. Calculate the resonant frequency using equation.

6. Compare measured frequency with the theoretically calculated value.

7. Switch off the supply.

8. Remove the patch cord connected between points a and b and connect it between

points a and c.

9. Remove the patch cord connected between points d and ground and connect it between

points e and ground.10. Follow the procedure from point 4 to 7.

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Observation Table:

Patch cord connected across Aand B

Patch cord connected AcrossA and C

Practical Resonant Frequency

Theoretical Resonant

Frequency

Conclusion:

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Practical: 6

Aim: To study Voltage series and Voltage Shunt negative feedback Amplifiers

Apparatus:

1. Adtrons trainer kit.

2. Signal generator

3. Oscilloscope.

4. Multimeter

Circuit Diagram:

Procedure:

Voltage Shunt

1. Disconnect link 1 that the negative feedback is disconnected and the circuit works as a

circuit without feedback.

2. Connect the Signal generator and Oscilloscope in the input terminal ,and connect

Oscilloscope to the output terminals.

3. Adjust the output of signal generator to 1khz sine wave and gradually increase the

output voltage so that the oscilloscope can display maximum non distorted waveform at

the output terminal. View and record the waveform at INPUT and OUTPUT respectively.

4. Connect the negative feedback circuit by connecting the jumper LINE 1.

5. Repeat step 2 & 3.

6. View the waveforms of Vin and Vout for both the circuits with negative feedback And

without negative feedback.

Voltage Series1. Disconnect link 1 that the negative feedback is disconnected and the circuit works as a

circuit without feedback.

2. Connect the Signal generator and Oscilloscope in the input terminal ,and connect

Oscilloscope to the output terminals.

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3. Adjust the output of signal generator to 1khz sine wave and gradually increase the

output voltage so that the oscilloscope can display maximum non distorted waveform at

the output terminal. View and record the waveform at INPUT and OUTPUT respectively.

4. Connect the negative feedback circuit by connecting the jumper LINE 2.

5. Repeat step 2 & 3.

6. View the waveforms of Vin and Vout for both the circuits with negative feedback and

without negative feedback.

Observation Table:

Conclusion:

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Practical: 7

Aim: To study Current series and Current Shunt negative feedback Amplifiers

Apparatus:

1. Adtrons trainer kit.

2. Signal generator

3. Oscilloscope.

4. Multimeter

Circuit Diagram:

Procedure:

Current Shunt

1. Disconnect link 1 that the negative feedback is disconnected and the circuit works as a

circuit without feedback.

2. Connect the Signal generator and Oscilloscope in the input terminal, and connect

Oscilloscope to the output terminals.

3. Adjust the output of signal generator to 1khz sine wave and gradually increase the

output voltage so that the oscilloscope can display maximum non distorted waveform at

the output terminal. View and record the waveform at INPUT and OUTPUT respectively.

4. Connect the negative feedback circuit by connecting the jumper LINE 4.

5. Repeat step 2 & 3.

6. View the waveforms of Vin and Vout for both the circuits with negative feedback and

without negative feedback.

Current Series

1. Disconnect link 1 that the negative feedback is disconnected and the circuit works as a

circuit without feedback.

2. Connect the Signal generator and Oscilloscope in the input terminal ,and connect

Oscilloscope to the output terminals.

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3. Adjust the output of signal generator to 1khz sine wave and gradually increase the

output voltage so that the oscilloscope can display maximum non distorted waveform at

the output terminal. View and record the waveform at INPUT and OUTPUT respectively.

4. Connect the negative feedback circuit by connecting the jumper LINE 3.

5. Repeat step 2 & 3.

6. View the waveforms of Vin and Vout for both the circuits with negative feedback and

without negative feedback.