Calculating DC Values of a Transistor Amplifier

By Terry Bartelt

In this animated activity, learners view the seven steps that are used to calculate voltage and current values throughout a common-emitter transistor amplifier.

AC Capacitor: A Water Tank Analogy

By Roger Brown

In this animated lesson, students read an analogy comparing water in a "special" water tank to the current "flow" through a capacitor.

Series Circuit Analysis Practice Problems Part 1

By Patrick Hoppe

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

The Superposition Theorem

The superposition theorem is explained as it relates to dc circuit analysis. Examples are given.

AC Current Flow

In this interactive and animated object, learners examine the flow of electron current into and out of hot and neutral sockets during each alternation of an AC waveform. A brief quiz completes the activity.

Series-Parallel Circuit Analysis Practice Problems: Circuit #5

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

Thevenin Voltage: Practice Problems

Students work five practice problems to determine the Thevenin voltage of DC circuits.

Series-Parallel DC Circuits Analysis

Learners follow a methodical approach for the dc analysis of series-parallel circuits.

Norton's Theorem

Learners follow the steps for reducing all of the elements of a complex circuit to a single current source and a single source resistance to create a simple circuit. Several examples are given for dc circuits. The conversion between Thevenin and Norton is also presented.

The Edison Wire System

Learners read a description of the wiring configuration of a residential Edison Wire System, which consists of a transformer secondary circuit. The circuit supplies two 115-volt sources and one 230-volt source.

The DC Shunt Motor

Learners examine the operation of a DC Shunt motor and its characteristics. A quiz completes the activity.

Selecting a Proper Single Phase Transformer

By Gary Lindell, Terry Bartelt

Students follow the steps that are required to select a transformer with the proper ratings. Voltage, frequency, current, and KVA are considered.

Fundamentals of a DC Motor

Learners study the interaction between the conductors of the stator and the armature inside a DC motor, which causes the shaft to rotate. A short quiz completes the activity.

The Semiconductor Diode

In this interactive object, learners examine the PN sections of a diode and the diode's forward- and reverse-biased operations. A brief quiz completes the activity.

Voltage Divider Rule (VDR)

By Terry Fleischman, Patrick Hoppe

Students review the Voltage Divider Rule and work practice problems.

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 Basic Operation of a Diode

In this interactive and animated object, learners examine the operation of a semiconductor diode when it is forward and reverse biased. A brief quiz completes the activity.

AC Voltage Conversion Problems

By John Rosz, Terry Bartelt

Learners work problems to make conversions between RMS, average, peak, and peak-to-peak AC voltages.

Parallel Circuit Analysis Practice Problems: Circuit #5

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

Abbreviations Representing Electrical Quantities

In this learning activity you'll identify abbreviations that represent quantities associated with electrical circuits.

The Generation of Alternating Current

This learning object describes the production of an alternating current in a generator with a single-loop armature. An illustration of how a sine wave is produced is shown through animation.

Karnaugh Maps

Learners examine the Karnaugh map for a three-variable system. Several examples are given.

Total Resistance in a Parallel Circuit

The learner will apply the three formulas used to find the total resistance of three types of parallel resistor circuit configurations.

AC Voltage Conversions

In this animated object, learners examine the formulas used to convert peak, RMS, average, and peak-to-peak AC voltages. A brief quiz completes the activity.

Ohm's Law: Current

By Tim Tewalt, Patrick Hoppe

Learners study animated rheostat settings that show how current flow is inversely proportional to resistance. Ten review questions complete the learning object.