2. 2
Army Public School
Barrackpore
Name: Shubhrajit Sadhukhan
Class: 12D
Subject: Physics
Topic: Full wave rectifier with capacitor filter
Roll:
Session: 2022-23
4. 4
Aim
To construct a full wave rectifier
with capacitor filter and show that
that Alternating Current is rectified
into a Direct Current
5. 5
Certificate
This is to certify that
Shubhrajit Sadhukhan of class
12D has successfully completed
the project work in fulfillment of
the physics practical examination
conducted by AISSCE, New
Delhi.
Signature of Internal Examiner Signature of External Examiner
7. 7
Intro
A rectifier is an electrical device which converts an alternating
current into a direct current by allowing current to flow through it
in one direction only. It is often found in power supplies for
devices like radio, television and computer that require a steady
constant DC voltage (as would be produced by a battery). Its
output is smoothed by an electronic filter such as a capacitor.
10. 10
Working
The transformer steps down the 220V main supply to 9
volts. (This is the RMS value of the alternating current).
During the 1st half cycle Diode D1 is
forward-biased and diode D2 is
reverse-biased. So current flows
only through D1.
During the next half cycle the D1 is
reversed-biased and D2 is forward-
biased so current flows only
through D2.
In subsequent half cycles, the above processes are
repeated. In both the cases, it is clear that current flows
through the resistor in only one direction. Even though
the voltage across
resistor is unidirectional,
it will still contain a few
AC components (ripples).
L
L
11. 11
Acknowledgement
I would like to express my sincere regards to my physics
teacher, Mr. Somnath Adak for assigning me this project
and motivating me to complete it.
Also, I would also like to extend my thanks to my parents
for the provision of all the necessary resources and to my
friends for their sincere help.
