1. Experiment No: 03
TO OBTAIN TRANSIENT RESPONSE OF PARALLEL RLC CIRCUIT FOR STEP CURRENT
INPUT
1.1OBJECTIVE: To obtain transient response of parallel RLC circuit for step current
input
1.2SOFTWARE: ORCAD PSPICE
1.3 THEORY: % over shoot for over damped & critically damped is zero for under
damped case=[peakout-Vout(∞)]X100%
rise time is detained as the time erquired nfor the o/p voltage to rise from 10% to
90% if its final steady state value. The sitting time is required by an under damped
system for its o/p V response to approach steady state value.

2. 1.4 PROGRAMMING:
*PULSE(-IS +IS TD TR TF PW PER);Pulse Input
IIN 1 0 PULSE(0 200US)
R1 1 0 20
L1 1 0 50UH
C1 1 0 3UF
.TRAN 1US 400US
*.PRINT TRAN V(R1) V(L1) V(C1)
*.PLOT TRAN V(3) I(R1)
.PROBE
.END
RESULT:

3. PRECAUTION:
1. The first line is a title line can be anything. It can not be omitted.
2. The last line must be the .END statement.
3. You can insert comment lines. Anytime a line starts with an “*” is also handy
to block out a command line.
1. You can use upper or lower cases letters.
2. Don’t forget to add a carriage return after the .END statement.