Transistor Fundamentals: Classes of Operation
By Patrick Hoppe
Students read about the three main classes of amplifiers and view graphical representations of the collector current and circuit.
Transistor AC Analysis Practice Problem: Circuit #4
The learner solves for Zin(base), Zin(stage), Zout, and Av. A "help" screen is available.
True Power
By Terry Bartelt
Students read about the concept of true power and view examples of how it is dissipated as heat is provided.
Comparing Analog and Digital Signals
Learners compare animations of analog and digital data signals. A short quiz completes the activity.
An Introduction to the Digital Multimeter
In this learning activity you'll explore the functions and proper operation of a digital multimeter.
Full-Wave Rectifier
Students examine the full-wave rectifier. They review appropriate formulas and examples of actual circuits.
Basic DC Electrical Motor Construction
Learners examine the internal parts of a DC electrical motor and then text their knowledge in a drag-and-drop exercise.
Op Amps 5: Non-Inverting Amplifier Circuit Resistance
By Todd Van De Hey
The learner will calculate basic circuit resistance.
DC/AC I: Unit 11 Sample Exam
Learners answer six questions about transformers.
Parallel Resistance Practice Problems
Students work practice problems in which the total resistance of the circuit is calculated. Feedback is provided.
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.
The Open-Collector Logic Device
In this animated object, learners view the operation of an open-collector inverter with and without a pull-up resistor.
Transistor Fundamentals: Junction Field Effect Transistor (JFET)
Students read about the common characteristics of the Junction Field Effect Transistor. They also explore the schematic symbols and the basic operation of the JFET.
The Basic Operation of a Diode
In this interactive and animated object, learners examine the operation of a semiconductor diode when it is forward and reverse biased. A brief quiz completes the activity.
Inductive Reactance Demonstration 1
Learners view video clips showing how coiled wire provides more resistance to AC current flow than uncoiled wire.
Dielectric Constant
This learning activity presents information on how the type of material used for the dielectric of a capacitor affects the capacitor's value in farads.
Series-Parallel Circuit Analysis Practice Problems: Circuit 9
Learners examine a series-parallel circuit and solve 14 problems related to voltage, current and power. A help screen is provided.
Series Capacitance: Practice Problems
Students work six practice problems to determine the total capacitance of a series circuit. Immediate feedback is given.
How Metal Detectors Operate
Learners examine how metal detectors function. This object includes animation and sound.
Voltage, Resistance, and Current Relationships
In this learning activity you'll explain how voltage and resistance in a series circuit affect current flow.
The Digital Logic Probe
Students view the layout and operation of a digital logic probe.
Characteristics of the TTL Series
Learners read the characteristics of the TTL series. Examples are given and subfamilies are compared.
Timing Diagrams (Screencast)
The explanation and use of timing diagrams used in digital electronics to graphically show the operation of various circuits are given.
Op Amps 4: The Op Amp Buffer
Understand the op-amp buffer configuration and calculate basic circuit impedance.
Synchronous Motors
By Terry Bartelt, Terry Fleischman
In this animated object, learners study how the internal parts of an AC synchronous motor interact with magnetic fields to cause rotation. A short quiz completes the activity.