Half-Wave Rectifier

By Patrick Hoppe

This primer introduces the student to the half-wave rectifier. Both the 1st and 2nd approximations are examined.

Voltmeter Circuit Connections

By Terry Bartelt

Students read a step-by-step approach on how to connect a voltmeter to a circuit when making a measurement.

Series Inductance: Practice Problems

Students work nine practice problems to determine total series inductance. Immediate feedback is given.

Wattmeters

Learners examine the function of the analog wattmeter to measure true power, how it is connected in a circuit, and how the internal components develop a measurement. A brief quiz completes the activity.

Parallel DC Circuit Analysis

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

Mathematical Expression of an AC Sine Wave

Students view the mathematical expression of an AC waveform with respect to time (t) and read about the different components of this expression.

Resistor Color Code Recognition Drills

By James Bourassa, John Rosz

In this interactive object, students complete progressively more difficult exercises as a way to improve their ability to recognize resistor color code values.

Testing an On/Off Switch

In this learning activity you'll review methods for testing an on/off switch with an ohmmeter and a voltmeter.

Power Calculations in a Series/Parallel Circuit

In this learning activity you'll explore various ways to calculate the power consumed in a series/parallel circuit.

An Introduction to the Digital Multimeter

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

Total Impedance of a Series Circuit Using Complex Numbers: Practice Problems

Students solve six problems for series impedance using complex numbers. Immediate feedback is given.

DC/AC I: Unit 5 Sample Exam

Learners answer 14 questions about series-parallel DC circuits.

Power Law Practice Problems #1

Learners review the three formulas for power and work 12 problems. In each of the problems, students are given two of the three variables (voltage, resistance, or current) and asked to solve for power. Immediate feedback is provided.

Series Circuit Analysis Practice Problems: Circuit #10

In this interactive object, learners solve for total resistance, total current, the current through each resistor, the voltage across each resistor, and the power dissipated by each resistor.

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.

Transformers - A Mechanical Gear Analogy

By Roger Brown

Learners read an analogy comparing an electrical transformer to mechanical gears.

The Function Generator: Frequency Control

Learners read how to use the knobs and the output terminals of a Wavetek Model 25 function generator to obtain a waveform at a desired frequency.

Ohm's Law Practice Problems #1

Learners review Ohm's Law and then work 12 problems. In each of the problems, students are given two of the three variables (voltage, resistance, or current) and are asked to solve for the third.

Kirchhoff's Voltage Law

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

Parallel RL Circuit Vector and Circuit Analyzer

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.

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.

Series-Parallel Circuit Analysis Practice Problems: Circuit 10

Learners examine a series-parallel circuit and solve 14 problems related to voltage, current, and power. A help screen is provided.

Transfer Functions: The RL Low Pass Filter

Learners read how the transfer function for a RC low pass filter is developed. The transfer function is used in Excel to graph the Vout. The circuit is also simulated in Electronic WorkBench and the resulting Bode plot is compared to the graph from Excel.

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.