The Magnetron Ignition System

By Terry Bartelt

Learners read an explanation of how the Magnetron Ignition System uses a solid state switching component, a step-up transformer, and magnetism to provide a high voltage spark in a one-cylinder combustion engine.

Ignition System of a Combustion Engine

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

Watt's Law

In this animated object, students examine the concept of wattage dissipation and the three Watt's Law formulas.

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.

Voltage, Resistance, and Current Relationships

In this learning activity you'll explain how voltage and resistance in a series circuit affect current flow.

Boolean Theorems (Multivariable)

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

Cascading Magnitude Comparators

Learners read an explanation of how to connect two 7485 ICs to compare binary numbers by creating an 8-bit comparator. Diagrams and charts are presented.

Fan-Out: Determining the Load Drive Capability of an IC

Students follow steps to determine the number of inputs that can be driven by a specific IC. A sample problem is given.

NOR Gates

In this learning activity you'll review the operation of a NOR gate by using a truth table, a Boolean Algebra equation, a switch analogy, and a written statement.

Transistor Fundamentals: Emitter-Biased NPN Transistor

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

The Full-Wave Rectifier

Learners view the operation of a full-wave rectifier which has two diodes.

The Zener Diode

Students read about the operation of the zener diode. This activity includes the ideal zener, the breakdown operation, the calculation of series, and zener and load current.

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.

The 555 Astable Multivibrator

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

Bipolar Junction Transistor Vocabulary

Students read the terms associated with the Bipolar Junction Transistor (BJT) . They also view formulas for dc current and voltage.

Resistor Color Code Practice

In this learning activity you'll build a resistor's color code based on the bands.

Current Divider Rule (CDR)

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

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.

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.

Series RL Circuit Vector and Circuit Analyzer

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

Inductive Reactance Demonstration 1

Learners view video clips showing how coiled wire provides more resistance to AC current flow than uncoiled wire.

Energizing Time Constants of an RL Circuit

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.

Charging Time Constants of an RC Circuit

In this animated object, students view an explanation of how current, voltage, and the charge on a capacitor of a series RC circuit change during five time constants. A short quiz completes the activity.

Potentiometer Application

In this animated and interactive object, learners examine how a variable voltage is obtained from a variable resistor that is wired as a potentiometer across a fixed DC power supply.

Parallel Circuit Analysis Practice Problems: Circuit #4

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.