East West University
Department of CSE
LAB REPORT
Course Code and Name:
CSE 251~Electronic Circuits
Experiment no: 03
Experiment name:
To study the diode applications in clipping and clamping circuits.
Semester and Year: GROUP NO:
Spring2025 06
Name of Student: Course Instructor information:
1. Jagannath Banik
M. Saddam Hossain Khan
2. Md. Naimul Islam Rafi
3. Manha Mahbub Pushpita Senior Lecturer
Student Id:
Department of Computer Science &
1. 2023-2-60-144 Engineering
2. 2023-2-60-209
3. 2023-2-60-210
Date of Report Submitted: Pre-Lab Marks:
26-03-2025
Post Lab Marks:
TOTAL Marks:
ABSTRACT
In this experiment, we looked at how clipping and clamping circuits work to control electrical
signals using diodes. Essentially, clipping circuits cut off parts of the signal that go beyond a
certain voltage, while clamping circuits shift the entire signal up or down. We tested four
different circuits: a series negative clipper, a shunt positive clipper, a negative biased clamper,
and a positive biased clamper, all using a sinusoidal input signal. During the simulations, we saw
how the clipper circuits clipped parts of the signal and noticed some phase differences, while the
clamper circuits effectively shifted the signal's overall voltage level. The goal of the lab was to
better understand how diodes influence these circuits and how they can be applied to control
signal shapes. By documenting and analyzing the results, we gained a deeper appreciation of
how these components function in real-world applications.
OBJECTIVE
1. To watch the waveforms of different (Positive and Negative) clipper circuit types.
2. To see the Positive and Negative clamping circuits' waveforms.
THEORY
Diodes are widely used in electronics circuits to manipulate signal waveforms.Clipping circuits
remove unwanted voltage portions,protecting components from excessive voltages.They can be
series or parallel,depending on whether the diode is in line or shunt with the load.Adding a
reference voltage allows precise control over the clipping level.Clamping circuits,on the other
hand,shift the entire signal voltage without altering its shape.This is achieved using a capacitor
and diode to adjust the DC level.Positive clampers raise the waveform,while negative clampers
lower it,with biased versions enabling finer control.Through simulations,the experiment
confirmed how these circuits modify signal behavior according to theoretical principals.
POST-LAB REPORT QUESTION-ANSWER:
1. If the diodes in fig.1 and fig.2 are connected in opposite or reverse direction ,then how the
outputs will change - show in stimulation diagram.
Solution
Figure 01: Reversing the diodes Type-1
Figure 02:Stimulation
Figure 03:Reversing the diodes Type-2
Figure 04:Stimulation
Figure 05:Reversing the diode Type-3
Figure 06:Stimulation
Figure 07:Reversing the diodes Type-4
Figure 08:Stimulation
Figure 09:Reversing the diode Type-5
Figure 10:Stimulation
2. If the fixed +5V biasing source in fig.3 and fig.4 are replaced with a fixed -5V basing
source, then how the outputs will change – show in simulation diagram. [ Also, provide
the modified circuit diagrams with your simulation results]
Solution:
Figure 11: Negative Clamper with -5V
Figure 12: Stimulation
Figure 13: Positive Clamper with -5 V
Figure 14: Stimulation
CONCLUSION
This experiment focuses on the study of diode applications in clipping and clamping circuits.The
goal of this is to better understand clippers,including what they are,how and why they develop
and how to create them using diodes.Additionally,to identify waveforms and analyze how diodes
function in limiters or clippers.At the end,all the stimulations were created with the help of
PSPICE.
