Transistor Fundamentals: Collector Saturation and Collector-Emitter Cutoff
By Patrick Hoppe
Students read about the concepts of saturation and cutoff. They view diagrams that illustrate the interaction of the load line and the family of curves.
Operation of Full-Wave Bridge Rectifier
By Matthew Treu
In this learning activity you'll explore the operation of a full-wave bridge rectifier circuit.
Waveforms of a Triac Circuit
By Terry Bartelt
Learners observe the waveforms in a circuit in which a triac controls the brightness of a lamp’s light. A brief quiz completes the activity.
How Current Requires Voltage
This learning activity uses a water pressure analogy to present the concept that voltage pressure is required to cause current flow.
Learners read an explanation of the concept of apparent power in a power distribution system involving motors, generators, and transformers. A quiz completes this interactive lesson.
Voltage Waveforms in an Edison Three-Wire System
Learners view the waveforms and voltages of an Edison Three-Wire System and read a description of the polarities across the secondary of the center-tap transformer. This transformer supplies power to residential homes.
Ammeter Circuit Connections
In this animated activity, students view a step-by-step approach of how to connect an ammeter to a circuit. A brief quiz concludes the lesson.
Analog Voltmeter Operation
Students follow the procedure to measure voltage with an analog voltmeter. They examine the use of the Function Switch and the Range Switch. A brief quiz completes the activity.
Series Circuit Analysis Practice Problems Part 1
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.
Op Amp Fundamentals: The Operational Amplifier
Students read about the characteristics of the ideal operational amplifier and compare them with the industry standard LM741C.
Waveforms of an SCR Circuit
Learners view waveforms at various locations of an SCR circuit controlling the intensity a light bulb. The waveforms are shown when the light is dim, at medium brightness, and at full brightness. 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.
Series-Parallel Circuit Analysis: Practice Problems Circuit 1
In this interactive object, learners analyze a series-parallel DC circuit problem in a series of steps. Immediate feedback is provided.
Parallel Circuit Analysis Practice Problems: Circuit #10
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.
Students view a graphical explanation of how the motor condition (unloaded, 50 percent loaded, fully loaded) affects the phase between voltage and current, the current draw from the AC supply, the amount of power consumed, and the power factor.
In this animated activity, learners view the flip-flop and read about its outputs, the information it stores, and its storage conditions. A quiz completes the lesson.
Transistor Fundamentals: AC Models
Students read about the four steps to creating an ac model and view examples.
The Transistor Symbol
In this animated and interactive object, learners use a memory device to identify NPN and PNP transistors. Learners also examine how much the transistors turn on when the voltage applied to the base is varied.
This learning activity describes the physical properties that affect the inductance, in henries, of an inductor.
Inductors (Description and Examples)
Learners read a description of inductors and view examples of inductors in series and in parallel.
Conductors, Insulators and Resistors
In this animated activity, learners examine why various materials are conductors, insulators, or resistors of current. A short quiz completes the learning object.
In this animated object, students examine the concept of wattage dissipation and the three Watt's Law formulas.
Thermistor Temperature Alarm Circuits
In this animated object, learners examine the operation of a temperature alarm circuit that uses a thermistor in a Wheatstone Bridge.
Total Resistance of a Series Circuit
In this learning activity you'll review the process of solving for the total resistance in a series DC circuit.
Ignition System of a Combustion Engine
Students view the parts and movements of a combustion engine in this animated activity. Each part is described.