Apparent Power

By Terry Bartelt

Learners read an explanation of the concept of apparent power in a power distribution system involving motors, generators, and transformers. A quiz completes this interactive lesson.

Motor Loading

Students view a graphical explanation of how the motor condition (unloaded, 50 percent loaded, fully loaded) affects the phase between voltage and current, the current draw from the AC supply, the amount of power consumed, and the power factor.

Analog Voltmeter Operation

Students follow the procedure to measure voltage with an analog voltmeter. They examine the use of the Function Switch and the Range Switch. A brief quiz completes the activity.

Maximum Power Transfer

By Patrick Hoppe

Learners are introduced to the maximum power transfer theorem. Examples show the load as it varies and the results are graphed.

The 555 Astable Multivibrator

Learners observe the animated operation of an astable mulivibrator using a 555 IC (integrated circuit) chip and external components.

Series 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.

A Sample DC/AC I Exam

Students complete a sample exam for DC/AC I. It provides an overview of the material presented in the course.

Noninverting Op Amp

In this animated object, learners examine the fundamental operation of a noninverting operational amplifier. A brief quiz completes the activity.

Batteries

Learners are introduced to primary and secondary batteries. Examples are given.

Operation of Full-Wave Bridge Rectifier

By Matthew Treu

In this learning activity you'll explore the operation of a full-wave bridge rectifier circuit.

Current Divider Rule (CDR)

Students review the Current Divider Rule (CDR) and work practice problems.

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.

The Zener Diode: Practice Problems

Students complete 10 practice problems. These deal with the determination of series current, zener current, and load current, and if the zener diode is operating in the breakdown region.

Op Amps 2: The Non-Inverting Amplifier

By Todd Van De Hey

The learner will describe the non-inverting op-amp configuration and calculate the circuit gain.

Rotating Vector Representation of the Sine Function

The learner will be able to represent steady-state AC sinusoidal signals using phase vectors, which will lead to a simplified technique of analyzing AC circuits in a very similar way that we analyze DC circuits.

Ohm's Law Practice Problems #3

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.

Interpreting the Resistor Color Code

Students examine how to interpret resistor color code bands to determine resistance values and tolerance ranges. This interactive learning object has audio content and includes exercises.

Current Divider Rule Practice Problems

In this interactive object, learners review the CDR and work nine problems. Immediate feedback is given.

Clock Pulse Triggering of Flip-Flops

This learning object shows the symbols used to represent the type of pulse required at the clock input to activate flip-flops.

Demultiplexers

In this animated object, learners examine the operation of a demultiplexer along with the data output and select lines. A brief quiz completes the activity.

Pulse Train Fundamentals: Practice Problem #1

In this interactive object, learners determine the pulse width, period, duty cycle, and frequency of a waveform.

Ignition System of a Combustion Engine

Students view the parts and movements of a combustion engine in this animated activity. Each part is described.

Logic State Indicators

Instructions on how to interpret state indicator symbols for input and output terminals of digital devices is presented.

Boolean Theorems (Single Variable)

Students analyze the eight single variable Boolean theorems and their expressions.

Average Voltages of Pulsating DC Voltages

In this learning activity, learners will learn to calculate the average voltage produced by half-wave and full-wave rectifiers.