The Time Proportioning Operational Amplifier (Screencast)

By Terry Bartelt

In this animated object, learners see how a time proportioning operational amplifier varies an average DC voltage. A brief quiz completes the activity.

Effects of a Rheostat in a Series Circuit

In this animated object, learners examine how the way in which a rheostat is connected in series with other resistors causes current and voltage to change as the resistance is varied. A brief quiz completes the activity.

Voltages Across Series and Parallel Capacitive Circuits (Screencast)

In this interactive and animated object, learners examine how dc voltages develop across capacitors that are connected in series and in parallel.

Inductors (Description and Examples)

By Patrick Hoppe

Learners read a description of inductors and view examples of inductors in series and in parallel.

The Magnetic Circuit

Learners compare electromagnetic quantities with the voltage, current, and resistance quantities of an electrical circuit. A brief quiz completes the object.

Charging Time Constants of an RC Circuit (Screencast)

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.

Discharging Time Constants of an RC Circuit (Screencast)

In this animated object, learners examine how current, voltage and the discharging capacitor of a series RC changes during 5 time constants. A brief quiz completes the activity.

The Horizontal Portion of the Sine Wave

In this animated object, learners examine cycles, frequency, Hertz, wavelengths, and periods. A brief quiz completes the activity.

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.

Capacitor Values (Screencast)

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

Clock Pulse Triggering of Flip-Flops (Screencast)

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

Oscilloscope Frequency Measurements (Screencast)

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

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.

Parallel Circuit Analysis Practice Problems: Circuit #6

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.

Parallel Circuit Analysis Practice Problems: Circuit #7

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.

Parallel Circuit Analysis Practice Problems: Circuit #5

Parallel Circuit Analysis Practice Problems: Circuit #8

Parallel Circuit Analysis Practice Problems: Circuit #9

Series-Parallel Circuit Analysis Practice Problems: Circuit 3

In this interactive object, learners solve a series-parallel DC circuit analysis problem. Immediate step-by-step feedback is given.

Parallel Circuit Analysis Practice Problems: Circuit #10

Series-Parallel Circuit Analysis Practice Problems: Circuit 2

Internal Elements of a 555 Timer (Screencast)

In this screencast, learners examine the internal elements of a 555 IC and their operation.

The 7493 IC Binary Counter (Screencast)

In this screencast, learners examine the construction of a 7493 IC as mod-2 and mod-8 up-counters. They view how this binary counter can be modified to operate at different modulus counts.

Voltage Sources in Parallel

The effect of connecting voltage sources in parallel to increase amperage to a load is presented.