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module 3

Module 3 :
Application of Laplace Transforms
Review of Laplace Transforms and Inverse Laplace
Transforms, Initial value theorem &Final value theorem,
Transformation of basic signals and circuits into s-domain.
Transient analysis of RL, RC, and RLC networks with
impulse, step and sinusoidal inputs
(with and without initial conditions). Analysis of networks
with transformed impedance and dependent sources.
The Laplace transform, named after its inventor Pierre-Simon Laplace , is
an integral transform that converts a function of a real variable (often time)
to a function of a complex variable {s} (complex frequency).
The transform has many applications in science and engineering because it
is a tool for solving differential equations. In particular, it transforms
differential equations into algebraic equations and convolution into
The Laplace transform has a number of properties that make
it useful for analyzing linear dynamical systems. .
The transform turns integral equations and differential
equations to polynomial equations, which are much easier to
solve. Once solved, use of the inverse Laplace
transform reverts to the original domain.
Step function of
amplitude A
Unit step function of
ampltitude 1