Department of E& TC Engineering
Vishwakarma Institute of Technology, Pune
COURSE PROJECT REPORT
Course Code: ET2273
Course Name: Industrial Electronics
Analysis of CE-CC Cascade (Multistage)
Ampifier Circuit
BATCH 3
GROUP MEMBERS
43.Sandesh Tangde
44.Balganesh Thorat
46.Sanika Thorbole
62.Malhar Kulkarni
Branch E&TC
Div D
Roll No : 43,44,46,62
Batch guide:
Prof. Dr. Medha Wyawahare
Analysis of Cascaded Multistage Amplifier
Malhar Kulkarni 12010581 ,Sanika Thorbole 12110236 , Sandesh Tangade 12110947,Balganesh Thombare 12110899
Department of Electronics and Telecommunication engineering
II. METHODOLOGY
I. INTRODUCTION
The use of the electronic devices in our
The working of the circuit designed
day-to-day life increased in the modern
by the cascading CE-CC amplifiers
generation, before the invention of the
to improve and analyze the voltage
semiconductor and diodes, there exist a
gain. Initially we give the input
vacuum tube which was very difficult to
analog signal to the base of the first
deal: But these diodes and transistors are
transistor through voltage devider
small in size and changed the whole life of
network of the resistors R1 and R2.
the human. We use this configuration in
Positive voltage supply is given
our various electronic devices. Transistors
through R1 and collector terminal.
play very important role in any electronic
The network of RC and CE work as a
circuit. It can be used for various
stabilization network, RC acts as
applications. Mainly transistors are used as
load resistor and CE capacitor
amplifiers. In our project application
filters the DC components.
analysis, we also use transistors as
The output of the common emitter
amplifier. Basically, amplifiers used to
(amplifier first stage) is given as
amplify the signals while transmitting from
input to the next cascaded stage
one place to another. The amplifier we are
which is input to the base of
using common emitter amplifier and we
common collector amplifier
are cascading two amplifiers common
through coupling capacitor. The
collector also with it. By cascading we can
output of the second transistor is
amplify the signals more. This circuit is
taken across the emitter and
designed to analyse and improve the
ground. The output of the circuit is
voltage gain.
amplified signal with no phase shift.
III. LITERATURE SURVEY 2. Resistors:- To control the voltage.
3. Capacitors:- To filter AC and DC
In the buffering action of amplifier
elements.
to improve the gain of the various
4. AC source:- To give analog input.
studies and research was done
5. Battery:- To give the voltage supply.
many more researchers.
6. Voltmeter:- To measure the output.
In [1] modeled the performance
improvement of multistage BJT
amplifier, purpose of this work was
to compare the performance of a
multistage RC based transistor with
its linear stage.
In [2] designed analysed the
multistage CE amplifier for low
frequency applications they
improved voltage gain over the
single stage. The results obtained
shows that using analytical method
a voltage gain of GSDB was
obtained for the single stage and
54dB was obtained for multistage.
As it is shown in [3] that it can be
wrong that the noise figure of a
multistage amplifier is primarily
determined by the noise figure of
the first stage, if the power gain of
first stage is sufficiently high.
IV. COMPONENTS REQUIRED
1. NPN transistor:- It is used as
amplifier.
• Circuit diagram.
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bandwidth decreases. Decreasing in
bandwidth results increase in lower cut off
frequency and decrease in upper cut off
frequency. For n-amplifiers in cascade
connection, overall bandwidth will be =
f_{H} * sqrt((2) ^ (1/n) - 1)
VI. REFERENCES
[1] ‘Sumit Swain, Sushmita P. Thatoi,
Madhab Chandra Tripathy’, “modeling and
performance of multistage BJT amplifier,
• Applications IJESC; July,2020.
Applications of RC coupled amplifiers.
[2] ‘Dan Abia, Akaninyene Obot, Kufre
1. Radio frequency communications.
Vdofia’, “multistage CE amplifier for low
2. Optical fiber communications.
frequency applications”, EJERS; October
3. Public address systems as pre-
2019.
amplifiers.
4. Controllers.
[3] ‘W,Marshall leach’, “calculation of
noise in multistage amplifiers”, IEEE;
March 2017.
V. CONCLUSION AND FUTURE SCOPE
The voltage gain of amplifier can be [4]https://www.electrical4u.com/rc-
increased by using cascading connection of coupled-amplifier/
individual stages. the cascade connection
is used to obtain large output impedance.
Darlington connection is used to obtain
high current gain in a cascade amplifier,
the overall gain is equal to product of gains
of individual amplifiers. In cascaded
connection overall gain increases. Hence
