Appratus Required Project 2022

PART: B
AIM:
The aim of this lab project is for the demonstration and simulation of Voltage- time
relationship, Steady-state, transient response for series RL circuit.
APPRATUS REQUIRED:
a. LTspice
SIMULATION AND RESULT:
Fig.1. Circuit Diagram for series RL circuit
CALCULATIONS:
For Voltage Source:
In advance tab,

Vinitial = 0V,
Von = 12V,
Tdelay = 0s,
Trise = 1ns,
Tfall = 1ns and Ton= 1ms.
For Inductor:
3300 μH
For Resistor:
1 kΩ
Solution Q.9:
Fig.2.Screenshot of LTspice window for Series RL circuit.

Solution Q.10:
(a)

(b)
(c)
Fig.3. Simulation waveform for Voltages of various components such as resistor, inductor
and voltage sources
Solution Q.11:
The current i does not rise rapidly at the maximum value denoted as Imax which can be determined
by the ohm’s law as V=IR at t=0.
Solution Q.12:
However the resistor voltage denoted by VR =I.R, according to ohm’s law, but it will have the
same shape and exponential growth for for the current.[1]
However the inductor voltage, VL will have the value equal to Ve(-Rt/L). then the inductor voltage
VL will have and initial value at time as t=0. The required time in current flowing for RL series
circuit to reach at maximum steady state value is equal to 5↊. In which ↊ is measured by ↊ =
L/R. and the value of 5↊ is known as transient time of the circuit.