BEE1101 Electronic Device and Circuit Laboratory
Faculty of Engineering and Information Technology
FACULTY OF ENGINEERING
BEE1101 - ELECTRONIC DEVICE AND CIRCUIT
LABORATORY
LAB REPORT
EXPERIMENT No: 5
Inverting Operational Amplifier
Submitted by:
NAME STUDENT ID
Module Leader: Madam Siti Madihah binti Mazalan
Date of Submission: ________________________
TOTAL = ________ x 10% = %
BEE1101 Electronic Device and Circuit Laboratory
Faculty of Engineering and Information Technology
Experiment 5: Performance of inverting operational amplifier
Date:
Objective:
1) To construct an inverting operational amplifier circuit
2) To show the input and output waveform of an inverting operational amplifier circuit.
Basic Theory:
In an inverting amplifier circuit, the operational amplifier inverting input receives feedback
from the output of the amplifier. Assuming the op-amp is ideal and applying the concept of
virtual short at the input terminals of op-amp, the voltage at the inverting terminal is equal to
non-inverting terminal. The non-inverting input of the operational amplifier is connected to
ground. As the gain of the op amp itself is very high and the output from the amplifier is a
matter of only a few volts, this means that the difference between the two input terminals is
exceedingly small and can be ignored. As the non-inverting input of the operational amplifier
is held at ground potential this means that the inverting input must be virtually at earth
potential.
Applying KCL at inverting node we can calculate voltage gain,
Voltage gain (A)= Vout/ Vin = – Rf/Rin
Materials Required:
No. REQUIRED MATERIAL RANGE QUANTITY
1 Op-amp (IC 741) - 1
2 Resistor 10kΩ 1
3 Resistor 1 kΩ 1
4 Function Generator 200-300 Hz 1
BEE1101 Electronic Device and Circuit Laboratory
Faculty of Engineering and Information Technology
5 CRO/ Oscilloscope - 1
6 Power supply 15V 2
7 Breadboard - 1
8 Connecting wires As required
Procedure:
1) Construct the circuit as shown in the experimental circuit.
2) Set the value for power supply is (V CC =15 V andV EE=15 V )
3) Set the value for function generator is 200 Hz and the input signal is sinusoidal.
4) Observe the input and output signal from the oscilloscope.
5) Measure the amplitude (input and output voltage) and sketch the signal.
6) Measure the gain and compare the output voltage from the theory and experiment.
Experimental Circuit:
BEE1101 Electronic Device and Circuit Laboratory
Faculty of Engineering and Information Technology
Observation Result:
Input Voltage, V i=¿
Output Voltage, V o =¿
Draw the input and output signal:
BEE1101 Electronic Device and Circuit Laboratory
Faculty of Engineering and Information Technology
Calculate the gain, A
Discussion:
BEE1101 Electronic Device and Circuit Laboratory
Faculty of Engineering and Information Technology
Conclusion:
BEE1101 Electronic Device and Circuit Laboratory
Faculty of Engineering and Information Technology
ASSESSMENT I - LABORATORY REPORTS RUBRICS EVALUATION 8% (CLO4:PLO4:C4)
Poor Fair Moderate Good Excellent
No. Criteria Score (x weightage)
(1 point) (2 points) (3 points) (4 points) (5 points)
Majority format issue, with Missing major criteria, not Missing minor criteria, Almost complete criteria, neat Complete criteria, neat
1. General format and incorrect word structure. neat and contain many errors. less neat and contain but contain some errors. with minimal errors.
structure and
Submission: Up to > 1 Submission: Up to > 1 some errors. Submission: Report Submission: Report
submission
days late. days late. Submission: Up to > handed in on time in handed in on time in
1 days late. hardcopy and softcopy hardcopy and softcopy
upload in LMS. upload in LMS.
Give wrong Gives very little Gives very little Clear explanation of Clear explanation of
2. Introduction and information about the information on information on task experiment and with minor experiment and the specific
Background of Experiment task assigned. task assigned. assigned. Explanation of inaccuracy in the specific task task assigned.
and Task and Submission experiment with assigned.
inaccuracy.
Not sequential, most steps Some of the steps are Some of the steps are Most of the steps are Presents easy-to-follow
3. Methodology (Use of are missing or are understandable; most are understandable; most understandable; some lack steps which are logical and
Equipment) confusing. confusing and lack detail. are confusing and lack detail or are confusing. adequately detailed
detail.
Flawed defense using Flawed defense using Flawed defense using Weak defense using relevant Strong defense using
4. Results Analysis irrelevant theory, relevant theory, calculation relevant theory, theories, formula or relevant theories, formula or
calculation or simulation. or simulation. calculation or simulation. simulation. simulation.
No sample calculations Sample calculations provided, Sample calculations Correct sample calculations Correct sample calculations
provided (if any). Results with minimal errors (if any). provided, with majority provided, without units (if any). provided, with units (if any).
(with % error where Results (with % error where errors (if any). Results Results (with % error where Results (with % error where
appropriate) are not stated. appropriate) are not stated. (with % error where appropriate) are stated. appropriate) are clearly
appropriate) are vaguely stated.
No graphical presentation Graphical presentation stated. Correct graphical presentation
showed (if any). showed, with few errors and showed, without straight line Correct graphical
incorrect trend lines (if any). Graphical presentation equation (if any). presentation showed, with
showed, with correct trend straight line equation (if
lines but few errors (if any). any).
The conclusion not related The students are able to The students are able to The objective/aim of the The objective/aim of the
5. Conclusion to the objectives/aims of conclude the result based on conclude the result based experiment is achieved. The experiment is achieved. The
the experiment. the objective of the on the objective of the students are able to conclude students are able to conclude
experiments but have experiments. the result based on the clearly the result based on
missing point. objective of the experiments. the objective of the
experiments.
Lecturer’s Comments Total Marks
Student’s Comments
BEE1101 Electronic Device and Circuit Laboratory
Faculty of Engineering and Information Technology
