Waveforms of an SCR Circuit
By Terry Bartelt
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.
The Relay
In this animated lesson, students view the operation of an electromechanical relay. A brief quiz concludes the activity.
Transistor Fundamentals: Base-Biased NPN Transistor
By Patrick Hoppe
Students view a dc analysis of a base-biased NPN transistor.
Development of a Boolean Expression for a Combinational Logic Circuit
Learners view an animated demonstration of how to determine the final output of the combinational circuit.
Summing Op Amp
In this animated object, learners examine the operation of a summing operational amplifier through formulas, tables, and animated illustrations. A brief quiz completes the activity.
Transistor Fundamentals: Emitter-Biased NPN Transistor
Students view a dc analysis of an emitter-biased NPN transistor.
Automotive Electrical Systems: Ohm's LawPractice Problems #2
By Andrew Rinke, Patrick Hoppe
Learners review Ohm's Law and then work 12 problems to help them apply the law to automotive electrical systems. 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.
Ohm's Law Practice Problems #3
Learners review Ohm's Law and then 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.
Transistor Fundamentals: The MOSFET
Students read an introduction to the Metal Oxide Semiconductor Field Effect Transistor. They also examine its enhancement mode.
Variable Resistors
In this animated activity, students read about the two general types of variable resistors: potentiometers and rheostats. They then answer six multiple-choice questions.
The Neutral Current of an Edison Wire System
Learners take a close look at the Edison Wire System and observe how the current values through the two lines and the neutral of the system change as the loads vary.
Comparing Analog and Digital Signals
Learners compare animations of analog and digital data signals. A short quiz completes the activity.
Logic Probe Troubleshooting
In this animated object, learners follow a process for troubleshooting digital integrated circuits on a printed circuit board using a logic probe.
Inductive Reactance
Students read an introduction to inductive reactance and view examples.
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.
Fan-Out: Determining the Load Drive Capability of an IC
Students follow steps to determine the number of inputs that can be driven by a specific IC. A sample problem is given.
The Sine Wave
Using text and graphics, this learning activity describes a sine wave, including alternations, cycles, time, amplitude, and degrees
Complex Power: The Sum of the Individual Real and Reactive Powers
The learner views a method to find the total complex power of a circuit in which the individual real and reactive powers are found and then added together. Several examples are shown, along with the power triangles.
Tri-State Buffer
Students observe the operation of a tri-state buffer used in digital electronics. A brief quiz completes the activity.
The Flip-Flop
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.
Series-Parallel Circuit Analysis Practice Problems: Circuit 7
Learners solve 14 problems related to voltage, current and power in a single source, six-resistor circuit. A help screen is provided.
Transformers
Students read an introduction to transformers that includes schematic symbols, turns ratios, mutual inductance, and the coefficient of coupling.
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.
Voltage and Current Amplitudes in a Parallel LC Circuit
In this interactive object, learners examine how voltages and currents vary in a parallel LC circuit as the applied frequency changes.
Series Capacitance: Practice Problems
Students work six practice problems to determine the total capacitance of a series circuit. Immediate feedback is given.