An Algorithm for Converting a Decimal Number to a Hexadecimal Number

By Kevin Ritzman

In this animated activity, learners examine a systematic method for converting a decimal number (base 10) into a hexadecimal number (base 16).

Series RC Circuit Vector and Circuit Analyzer

By James Bourassa, John Rosz

In this teaching and learning aid, the user can alter circuit variables and view how these changes affect circuit voltage, current, reactance, impedance, and phase angle.

Energizing Time Constants of an RL Circuit

By Terry Bartelt

In this animated object, students view an explanation of how current, voltage, and the magnetic field strength of a series RL circuit change during five time constants. A brief quiz completes the activity.

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.

The Logic Gates

By Patrick Hoppe

Students read information about basic logic gates including the gates' names, symbols, Boolean expressions, pronunciations, and truth tables. They then complete a matching exercise.

A Sample Exam for Digital Electronics

Students answer 10 questions in a sample exam. This exercise covers number systems, number conversion, logic gates, and combinational design. Feedback is provided.

The Electrostatic Charge of a Capacitor

In this animated activity, learners examine the conversion of electrical energy into an electrostatic charge within the dielectric material of a capacitor.

Kirchhoff's Current Law - Parallel Circuits

In this learning activity you'll explore Kirchhoff's Current Law and view examples of its application.

Magnetic Hysteresis

In this animated activity, learners examine how residual magnetism causes magnetic hysteresis.

Boolean Theorems (Multivariable)

Students read the multivariable theorems and view the graphic depictions of the Boolean expressions.

Serial-In Serial-Out Shift Register

In this animated activity, students view the operation of a 4-bit serial-in serial-out register. A brief quiz completes the learning object.

Transistor Fundamentals: Collector Saturation and Collector-Emitter Cutoff

Students read about the concepts of saturation and cutoff. They view diagrams that illustrate the interaction of the load line and the family of curves.

Transistor Fundamentals: Emitter-Biased NPN Transistor

Students view a dc analysis of an emitter-biased NPN transistor.

The Differentiator Op Amp

In this animated object, learners examine the circuit configuration and operation of a differentiator operational amplifier. A brief quiz completes the activity.

The Transistor Symbol

In this animated and interactive object, learners use a memory device to identify NPN and PNP transistors. Learners also examine how much the transistors turn on when the voltage applied to the base is varied.

Voltage Drops in a Series Circuit

Students study the concept that the voltage drop across a series circuit resistor is proportional to its resistance. They then complete a brief quiz.

Current Divider Rule (CDR)

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

Reversing the Rotation of DC Motors

By Terry Bartelt, Terry Fleischman

Learners view animations showing how to change the connections to cause a DC motor to reverse its rotation. A short quiz completes the activity.

Vector Diagram for a Series RL Circuit

Learners view a vector diagram for a series RL circuit. Information on the voltage across each component, the total voltage, and the phase angle is included.

Power Law Practice Problems #3

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.

Transistor AC Analysis Practice Problems: Circuit #1

The learner solves for Zin(base), Zin(stage), Zout, and Av. A "help" screen is available.

The Neutral Current of an Edison Wire System

Learners take a close look at the Edison Wire System and observe how the current values through the two lines and the neutral of the system change as the loads vary.

Logic State Signals

In this learning activity you'll identify the voltage levels produced or recognized by digital logic devices as valid or invalid logic state signals.

Transistor Fundamentals: Decibel Gain, Power, and Voltage

Students read about decibel power gain and decibel voltage gain. Examples are given for each.

Op Amp Fundamentals: The Operational Amplifier

Students read about the characteristics of the ideal operational amplifier and compare them with the industry standard LM741C.