Electrical Assignment

Electrical Assignment
Student Name –
Student ID -

Contents
TASK 2:............................................................................................................................... 3
EXPERIMENT.................................................................................................................... 3
TASK 3:............................................................................................................................... 8
TASK 4:............................................................................................................................. 11
Unit 6 Task 2.................................................................................................................... 12
Task: Legislation.............................................................................................................. 13
Task 1.............................................................................................................................. 14
References....................................................................................................................... 20

TASK 2:
We have to carry out an experiment to determine the relationship between the voltage and current for
charging and discharging capacitor.
EXPERIMENT
OBJECTIVE:-
To study and plot the transient response of RC circuit using P-Spice software.
APPARATUS REQUIRED:-
Computer system and P-Spice software
BRIEF THEORY:-
Applying Kirchhoff’s voltage low to the circuit shown in figure,
1 / C ∫ i dt + R . i = V
Differentiating w.r.t ‘t’
1 / C i + R di / dt = 0
R di / dt = -1 / C . i
.di / i = 1 / RC dt
Integrating w.r.t to’i’ on L.H.S. and w.r.t. ‘t’ on R.H.S. and then taking log on both sides
Log i = -1/RC t + log c
or i=c e-t/RC

On putting I = V/R in above equation, we get
V/R=c e-t/RC At t = 0 , c = V/R
Thus i=V/R e-t/RC
PROCEDURE:-
STEP1-CIRCUIT CREATION WITH CAPTURE
 Open the PSpice software and create a new analog , mixed AD project.
 Select the circuit parts from the respective libraries and place them in the circuit.
 Connect the parts using wire.
 Specify the values and names of the circuit elements ( R = 1 k, C = 0.2 μF ).
STEP2:-SPECIFY TYPE OF SIMULATION
 Create a simulation profile.
 Select the time domain analysis.
 Now run PSpice.
STEP3:-VIEW THE RESULT
 Now select the Traces menu to add traces to the probe window.
 Select V (R1) and V (C1) for the output responses of the resistor and the capacitor.