Voltage Source Approximations

By Patrick Hoppe

Students examine the first and second approximations of a voltage source. A "stiff" voltage source is defined, and several examples are given.

Op Amp Fundamentals: The Summing Amplifier

Students read an explanation of the summing amplifier and the formulas for closed-loop gain. An example is given.

The Half-Wave Rectifier

By Terry Bartelt

In this animated learning object, students read about the operation of a half-wave rectifier.

Voltmeter Circuit Connections

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

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.

Series RLC Circuit Tic-Tac-Toe 2

By playing a game of tic-tac-toe, a student can review what happens to currents and voltages throughout a series RLC circuit when the applied frequency is increased above resonance.

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.

Sine Wave Fundamentals: Practice Problem #5

In this interactive object, learners determine the Vp, Vp-p, Vrms, Vavg, and the frequency of a sine wave that is displayed on an oscilloscope screen.

DC/AC I: Unit 11 Sample Exam

Learners answer six questions about transformers.

Series-Parallel Circuit Analysis Practice Problems: Circuit 8

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

Ohm's Law Practice Problems #4

Learners review Ohm's Law and 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.

Magnetics AC Power Generation

By Tim Tewalt, Patrick Hoppe

Learners examine an animation that shows how an AC voltage is produced as an armature rotates within a magnetic field. Ten review questions complete the learning object.

Wheatstone Bridge

Students follow step-by-step directions on how to make mathematical calculations for a Wheatstone bridge.

OR Gates

In this learning activity you'll review how an OR gate operates using a truth table, a Boolean Algebra equation, a switch analogy, and a written statement.

Pulse Train Fundamentals: Practice Problem #5

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

Oscilloscope Coupling Switch

Learners read a description of the function of the coupling switch on an oscilloscope and how its setting affects measurements of DC, AC, and combined voltages. A brief quiz completes the activity.

Instantaneous Voltage Calculations of a Charging RC Circuit (Calculator TI-30XIIS)

Students view the keystrokes of a TI-30XIIS calculator that are required to solve for the instantaneous voltage of a charging RC circuit.

Impedance: Parallel to Series Conversion

Students view the formulas to be used to convert a parallel impedance to a series impedance.

The Universal NAND Gate

Students view schematics and truth tables that demonstrate how the AND, OR, and Hex Inverter functions are achieved through the use of only NAND gates.

Exclusive-OR Gates

In this learning activity you'll explore how an Exclusive-OR gate operates by using a truth table, a Boolean Algebra equation, a switch analogy, and a written statement.

The Bridge Rectifier

Learners see how a bridge rectifier converts an AC voltage into a pulsating DC voltage. A brief quiz completes the activity.

Oscilloscope Phase Shift Measurements (Screencast)

In this animated lesson, learners follow the steps required to read the phase shift difference in degrees between two AC waveforms.

Oscilloscope Frequency Measurements (Screencast)

Learners read a description of how an oscilloscope is used to measure the frequency of a sine wave.

Capacitor Values (Screencast)

In this screencast, learners examine the physical facets that determine the value of a capacitor.

Resistor Color Code Description

In this interactive activity, students read about the colored stripes on a resistor and interpret the placement of those colors to determine the value of four-band resistors.