Assembling a Circuit from a Schematic Diagram

By Terry Bartelt

In this animated object, students examine the steps for wiring an electrical circuit from reading a schematic diagram.

Current Divider Rule (CDR)

By Patrick Hoppe

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

Kirchhoff's Current Law: Practice Problems

Learners review Kirchhoff's Current Law and work six practice problems. Feedback is given.

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.

The L/R Time Constant

Learners read an explanation of the L/R time constant and examine the formula for calculating the instantaneous current value. The current is graphed as it climbs to maximum or drops to zero.

Op Amp Fundamentals: The Transconductance Amplifier

Students read an introduction to the transconductance amplifier. They also view formulas for voltage-to-current conversion, closed-loop input, and output impedance. An example of how R1 controls the conversion factor is given.

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.

The Induction Motor Slip

By Terry Bartelt, Terry Fleischman

In this animated object, learners examine how the rotation of an induction AC motor's armature slips behind the synchronous rotational speed of the stator's field to create magnetic fields. These fields interact and produce torque. A quiz completes the activity.

Maximum Power Transfer

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

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.

Electromagnets

Learners examine how an electromagnet is formed. Animated illustrations show current running through a coil wrapped around an iron core.

The Ideal Bode Plot

The Ideal Bode plot is introduced. The three main topics covered are: corner frequencies, midband voltage gain, and the roll-off rate.

The Vertical Portion of the Sine Wave

In this animated lesson, learners examine sine waves and alternating current. A brief quiz completes the object.

Converting Values in Engineering Notation

By Ron Wallberg

The learner will convert various values to engineering notation.

Reversing the Rotation of DC Motors

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

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.

ElectroMagnetic Radio Waves

In this animated object, learners examine how magnetic waves are transmitted as radio signals.

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.

The Transistor Switch

The learner views the operation of a transistor switching from saturation to cutoff. A brief quiz completes the activity.

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.

Inductive Reactance Demonstration 2

In this animated object, learners examine how a coil of wire provides more resistance to AC current flow than an uncoiled wire. This learning object contains audio.

Transformer Ratios

Students read descriptions of the voltage, current, and turns ratios of the primary and secondary coils for a transformer in this interactive lesson.

The Function Generator: Voltage Control

Learners read a description of the knob controls, pushbuttons and output terminals on the Wavetek Model 25 signal generator.

Impedance: Series to Parallel Conversion

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

Kirchhoff's Current Law - Parallel Circuits

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