# PBL

```Department Of Electronics and Telecommunication Engineering
A Presentation on :Op-amp based
Function Generator (PBL Topic)
Presented By:
1. VITTHAL DNYANADEO GHANGAL (ROLL NO-16)
2. NIKHIL RAJENDRA PATIL (ROLL NO-39)
3. NEEL VIJAY WADAKE (ROLL NO- 56)
4. MALODE PRATHAMESH GAJANAN(ROLL NO--32)
5.HARSH RAVINDRA DHALGE(ROLL NO-13)
Group No.2
Guided By: Ms. Sandhya Ahire
Contents
1. Basic Information
2. Diagram with Simulation Video
INTRODUCTION
•Function generator is a signal
generator that produces various
specific waveforms for test
purposes over a wide range of
frequencies. In laboratory type
function generator, generally one
of the function (sine, triangle, etc.)
is generated using dedicated chips
or standard circuits and converts it
in to required signal.
LITERATURE SURVEY
We made the circuit such that the output is
1KHz. If we want to change the frequency,
we can do so by changing the value of
capacitance, C1, in the square wave
generator. And if we want to change the
amplitude, we need to change the resistance
values in the amplifier portion of the circuit.
SUMMARY OF LITERATURE SURVEY
Function generators are used in the
development, test and repair of electronic
equipment. For example, they may be used
as a signal source to test amplifiers or to
introduce an error signal into a control loop.
Function generators are primarily used for
working with analog circuits, related pulse
generators are primarily used for working
with digital circuits.
PROBLEM STATEMENT
Lab testing in identifying different types of waves
Cheapest way to make it as the function generator
costs more expensive
OBJECTIVES
1. To build a function generator capable of generating
square,
triangle, and sine waves.
2. The frequency and amplitude of these waves will be
controlled through potentiometers.
3. There will be some frequency analysis to aid in the
understanding of Laplace
transforms, Bode plots, and Fourier series.
4. Finally, the function generator will be connected to
the stereo amplifier constructed to listen to the
generated waveforms through a
speaker.
BLOCK DIAGRAM
BLOCK DIAGRAM
SIMULATION VIDEO
COMPONENT &amp; WORKING
741 Op amp- Component to produce the waveform
Capacitors- To hold the charge
Resistors
3 potientometer- To measure the current
4 dipp switcher – To switch the current in circuit
EXPECTED RESULTS
It produces 3 wave forms
1) Square Wave
2) Triangular Wave
3)Sine Wave
Generates variable amplitude and frequency
REFERENCES
Wikipedia
https://en.wikipedia.org/wiki/Function_generator