MOBK059-FM MOBKXXX-Sample.cls March 9, 2007 10:43
iv
ABSTRACT
PSpice for Circuit Theory and Electronic Devices is one of a series of five PSpice books and
introduces the latest Cadence Orcad PSpice version 10.5 by simulating a range of DC and AC
exercises. It is aimed primarily at those wishing to get up to speed with this version but will be of
use to high school students, undergraduate students, and of course, lecturers. Circuit theorems
are applied to a range of circuits and the calculations by hand after analysis are then compared
to the simulated results. The Laplace transform and the s-plane are used to analyze CR and
LR circuits where transient signals are involved. Here, the Probe output graphs demonstrate
what a great learning tool PSpice is by providing the reader with a visual verification of
any theoretical calculations. Series and parallel-tuned resonant circuits are investigated where
the difficult concepts of dynamic impedance and selectivity are best understood by sweeping
different circuit parameters through a range of values.
Obtaining semiconductor device characteristics as a laboratory exercise has fallen out
of favour of late, but nevertheless, is still a useful exercise for understanding or modelling
semiconductor devices. Inverting and non-inverting operational amplifiers characteristics such
as gain-bandwidth are investigated and we will see the dependency of bandwidth on the gain
using the performance analysis facility. Power amplifiers are examined where PSpice/Probe
demonstrates very nicely the problems of cross-over distortion and other problems associated
with power transistors. We examine power supplies and the problems of regulation, ground
bounce, and power factor correction. Lastly, we look at MOSFET device characteristics and
show how these devices are used to form basic CMOS logic gates such as NAND and NOR
gates.
KEYWORDS
Cadence Orcad PSpice V10.5, Ohm’s law, Kirchhoff’s laws, Th
´
evenin and Norton theorems,
Mesh and nodal analysis, Laplace, transients, transfer functions, resonance, transformers, power
supplies, ground bounce, operational amplifiers, power amplifiers.
