Fundamentals of Circuits
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This electrical maintenance series will help students master
the fundamentals of power supplies. The series introduces the
components of typical power supply circuits, including rectifiers,
filters, voltage multipliers, regulators, fuses, circuit breakers, and
protective circuits.
AUDIENCE
The Fundamentals of Circuits series is designed for intermediate
electronics students who have an understanding of AC and DC
electronics. It does not assume previous knowledge of power supply
circuits; however, a familiarity with amplifier circuits is recommended.
LEARNER EXPECTATIONS
This series is intended to be used as an essential component of
your electronics preparation program. It is designed to provide
the background knowledge necessary to develop a fundamental
understanding of power supply circuits. Each lesson has specific
objectives that identify the anticipated level of understanding
associated with the information presented. While we cannot
guarantee student success, our experience indicates that those who
complete the training are likely to accomplish the stated objectives.
Furthermore, if these lessons are built into a total curriculum which
includes practice in the working environment, it will provide students
with the knowledge necessary to master the subject.
Featuring DuPont Owner-Operator Content
Copyright © 2010 Coastal Training Technologies Corp. All rights reserved. The DuPont Oval Logo, DuPont™, The miracles of science™ and all products denoted
with ® or ™ are registered trademarks or trademarks of E. I. du Pont de Nemours and Company or its affiliates.
Fundamentals of Circuits
E80010 Rectifiers
Purpose: To operate, electronic circuits require a source
of voltage and current. When this source is 115-volt,
60-cycle power, a power supply circuit converts the
alternating current to a direct current. This course
explains how halfwave, full-wave, and bridge rectifiers
produce a pulsating DC current.
Objectives: Describe the operation of half-wave, fullwave, and bridge rectifiers.
E80020 Filters
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PART SERIES
Purpose: The DC voltage produced by rectifiers is
unsuitable for most electronic applications because they
require a smooth, constant supply voltage. Filters convert
this pulsating direct current into the smooth DC voltage
that is used by electronic circuits.
Objectives: Describe the operation of capacitor filters,
resistor-capacitor filters, and inductor-capacitor filers.
E80030 Voltage Multipliers & Regulators
Purpose: Rectifier circuits that increase DC voltages
without the use of transformers are called multipliers.
This course demonstrates the operation of voltage
multiplier circuits. It also explains the operation of
voltage regulators which produce the same output
voltage regardless of changes in load resistance or AC
line voltage.
Objectives: Describe the operation of half-wave voltage
doublers, full-wave voltage doublers, and voltage triplers;
define load regulation; and describe the operation of the
zener regulator.
E80040 Series Voltage Regulation
Purpose: When voltage control devices are placed
in series with a load they are called series regulators.
This resistance provided by the control device adjusts
automatically so the voltage dropped across the load
remains constant.
Objectives: Describe the operation of the emitter follower
regulator, the feedback regulator, and the feedback
regulator with an op amp and explain how a current
limiting circuit can provide short circuit protection.
E80050 Power Supply Circuits
Purpose: Rectifiers, filters, and series regulators are
combined with protective devices, protective circuits, and
shunt regulators to form complete power supplies. This
course explains how these circuits and devices operate
and how they interact within power supply circuits.
Objectives: Describe the operation of fuses and circuit
breakers; describe the operation of protective circuits;
explain how shunt regulators and IC regulators operate;
and explain how the components and devices found in
oscilloscope and color TV power supplies interact.
E80060 Transformer Oscillators
Purpose: Oscillators are used in electronic circuits to
provide AC signals within a wide range of frequencies.
Different oscillators are required to provide different
frequencies; however, all operate with the same basic
principles. This course introduces these principles and
explains the operation of the transformer oscillator,
including Armstrong, tuned collector, and tuned base
oscillators.
Objectives: Explain the operations of basic oscillators; list
basic oscillator requirements; and describe the operation
of Armstrong, tuned collector, and tuned base oscillators.
Copyright © 2011 Coastal Training Technologies Corp. All rights reserved. The DuPont Oval Logo, DuPont™,
The miracles of science™ and all products denoted with ® or ™ are registered trademarks or trademarks of
E. I. du Pont de Nemours and Company or its affiliates.
Call 1-800-828-8190
to arrange a FREE
series demo!
www.training.dupont.com
Fundamentals of Circuits
E80070 LC & Crystal Controlled Oscillators
Purpose: This course demonstrates how three different
LC oscillators are constructed and how either a
parallelconnected or a series-connected capacitor and
inductor network are used to determine frequency.
Finally, the characteristics of certain crystals are
demonstrated as well as how these crystals may be
installed in oscillator circuits to provide a higher degree
of stability.
Objectives: Define the operation of the series-fed Hartley
oscillator, the shunt-fed Hartley oscillator, and the Colpitts
oscillator; understand basic crystal characteristics; and
define the operations of crystal-controlled oscillators.
E80080 RC Oscillators & Nonsinusoidal Oscillators
Purpose: This course explains why the RC oscillator is
considered the industry standard for low frequencies up
to 1 MHz. Students will learn why the resistancecapacitive networks of RC oscillators are a relatively
stable and inexpensive alternative to the LC family of
oscillators. Finally, two nonsinusoidal oscillators are
demonstrated.
Objectives: Describe the operation of a phase-shift
oscillator; describe the operation of a Wien bridge
oscillator; and describe the operation of nonsinusoidal
oscillators such as the blocking oscillator and the
sawtooth-blocking oscillator.
Available
formats:
Interactive
Online
Courseware
DVD
Workbook
8
PART SERIES
Copyright © 2011 Coastal Training Technologies Corp. All rights reserved. The DuPont Oval Logo, DuPont™,
The miracles of science™ and all products denoted with ® or ™ are registered trademarks or trademarks of
E. I. du Pont de Nemours and Company or its affiliates.
Call 1-800-828-8190
to arrange a FREE
series demo!
www.training.dupont.com