Download In this project, you are going to design an active Low

Adana Science and Technology University
Department of Electrical and Electronics Engineering
Electrical Circuit Lab Term Project
Active Low-Pass Filter
1. INTRODUCTION
In this project, you are going to design an active Low-Pass Filter circuitry.
A low-pass filter is a filter that passes signals with a frequency lower than a certain cut-off frequency and
preventing the passage of signals with frequencies higher than the cut-off frequency [1]. The most
important feature of a low pass filter is that the cut-off frequency and gain of the filter can be adjusted by
designer. Filter circuits are used in a wide variety of applications such as telecommunication, image
processing, speech processing, etc. There are many methods for designing low-pass filter but here we
focus on method which uses opamps. This circuit is composed of an operational amplifier, capacitor and
resistors.
1.1 Design Criteria’s
Design an active low pass filter based on the chosen cut-off frequency (150Hz-200Hz) and available
values of resistors and capacitors.
Gain of the filter can be chosen arbitrarily but it should be suitable with your design specifications.
2. Rules and Regulations
During the project, you may use any types of resistors, capacitors, and op-amps. Other circuit components
and integrated circuits are not allowed to use during the implementation phase.
The project will be carried out in groups of two students.
2.1. Preparation
In the preparation part, each group is required to present a proposed design solution for the project in a
report (pre-report). The report should also include simulation results illustrating the operation
of the circuit used in the design. The necessary calculations for each step (for example, resistor and
capacitor values) should be described in the report clearly.
The deadline for submitting the pre-report will be announced. Please ask the laboratory assistant about the
date. Late submissions will be penalized.
2. 2. Implementation and Demonstration
In the implementation part, you will physically construct your circuit. All team members must attend the
construction together. The attendance will be considered during the lab performance grade.
You must provide your
pots, etc.) and bread-board.
own
circuit
components
(op-amps,
resistors,
capacitors,
NOTE: During the project you are going to submit two reports. In the pre-report you are required to give
the main blocks of your design with their schematics and simulation results. The second one is the final
report which contains information below.
3. Final Report
The
final
report
should
include
of the experiences gained during the project.
the
final
design,
results,
and
a
summary
NOTE: The objectives, results and the experiences should be presented clearly. This does not
mean a long report, but definitely a well-organized one. The final report should contain the
following sections:
1. Abstract and Introduction
2. Theory
2.1. Selection of equipment such as resistors, capacitors, inductors, op-amps etc.
2.2. Working principle of the project
3. Schematic diagram of the circuit
4. Simulation results
5. Description of circuit operation: Both theoretically and experimentally
6. Comments and conclusions
ATTENTION
Cheating is strongly forbidden and will be severely punished. Each project can be implemented
in many different ways. Hence, it will be easy to detect similarities. This does not mean that you
cannot collaborate with your friends. However, the allowed form of collaboration is exchanging
the ideas, not duplicating the design details.
References
[1] https://en.wikipedia.org/wiki/Low-pass_filter