Voltage Divider Rule Practice Problems

By Patrick Hoppe

Learners review the VDR and work six problems. Immediate feedback is given.

Proportional Control Amplifier

By Terry Bartelt

Learners examine the operation of a proportional control amplifier and the two ways that it is programmed using proportional gain or proportional band. A brief quiz completes the activity.

Sequencer Output Instruction for the SLC-500 PLC

By Craig Hemken

Learners examine the fundamental concepts of sequencer output instruction. A simulated example shows a sequencer in operation.

The DC Motor

Learners examine the wiring of the primary components of the three types of DC motors, series, shunt, and compound. The operational characteristics of each type of motor are described. A quiz completes the activity.

Parallel RL Circuit Vector and Circuit Analyzer

By James Bourassa, John Rosz

Learners alter circuit variables and view how these changes affect circuit voltage, current, reactance, impedance, and phase angle.

Sine Wave Fundamentals

Learners examine the characteristics of a sine wave and the various ways to describe it including Vp, Vp-p, Vrms, Vavg, and frequency.

An Introduction to the Digital Multimeter

In this learning activity you'll explore the functions and proper operation of a digital multimeter.

Electrical Units, Abbreviations, and Symbols

In this learning activity you'll read introduction to electrical quantities, units, and symbols and test their knowledge in a matching exercise.

Electrical Generator Basics

In this animated activity, learners examine how a voltage is induced into a conductor when the conductor cuts across magnetic flux lines. They also view the four factors that determine how much voltage is generated. A brief quiz completes the learning object.

Frequency Dividers

In this learning activity you'll explore the operation of frequency division using several different types of counters.

Op Amp Fundamentals: The Non-Inverting Amplifier

Students are introduced to the non-inverting amplifier configuration. The formulas for closed loop gain and bandwidth are shown, and an example is given.

Power Factor

Learners read about the concepts of true power, reactive power, and apparent power, and are introduced to the power factor formula. A short quiz completes the activity.

Transformer Loading

In this animated activity, learners see that changing the resistance value of the load in the secondary of a transformer causes current to vary in the primary.

Basic DC Electrical Motor Construction

Learners examine the internal parts of a DC electrical motor and then text their knowledge in a drag-and-drop exercise.

The 7493 IC Binary Counter

In this interactive and animated object, learners examine the construction of a 7493 IC as mod-2 and mod-8 up-counters. They view how this binary counter can be modified to operate at different modulus counts. A quiz completes the activity.

Total Impedance of a Series Circuit Using Complex Numbers

Students view several examples of how to determine the total impedance of a series circuit. The "j" term is used in all of the calculations.

Electromagnets

Learners examine how an electromagnet is formed. Animated illustrations show current running through a coil wrapped around an iron core.

The TI-83 Plus Calculator: The Square Root Function

Learners follow step-by-step instructions for calculating the square root of a number using the TI-83 Plus scientific calculator. Steps for determining impedance are also shown.

Power Law: The Relationship of Voltage, Current, and Watts

Learners examine three formulas than can be used to find dc power. Examples are given.

Kirchhoff's Voltage Law

Students read a definition of Kirchhoff's Voltage Law and view examples of its use.

DC/AC I: Unit 5 Sample Exam

Learners answer 14 questions about series-parallel DC circuits.

Parallel DC Circuit Analysis

The approach to dc circuit analysis is presented to the learner. The approach is demonstrated for the student.

Lathe Project: Turning Between Centers

By Thaddeus Hetzer

Learners read work instructions and view a drawing for turning between centers on a lathe.

Time Proportioning Application

In this animated activity, students view the plastic pellets in a profile extrusion machine being melted as the temperature of the heating elements is elevated by a time proportioning control system.

Surface Finish

By Barbara Anderegg

Learners review surface finish basics and read how to calculate the roughness average.