In this animated object, learners examine how magnetic waves are transmitted as radio signals.
Proportional Control Amplifier
By Terry Bartelt
Learners examine the operation of a proportional control amplifier and the two ways that it is programmed using proportional gain or proportional band. A brief quiz completes the activity.
Instantaneous Current Calculations of a De-Energizing RL Circuit (Using a TI-30XIIS Calculator)
Students view a sample of the keystrokes of a TI-30XIIS calculator that are required to solve for the instantaneous current of a de-energizing circuit.
Current Divider Rule Practice Problems
By Patrick Hoppe
In this interactive object, learners review the CDR and work nine problems. Immediate feedback is given.
Learners examine how an electromagnet is formed. Animated illustrations show current running through a coil wrapped around an iron core.
The Sine Wave
Using text and graphics, this learning activity describes a sine wave, including alternations, cycles, time, amplitude, and degrees
How Metal Detectors Operate
Learners examine how metal detectors function. This object includes animation and sound.
Transformers - A Mechanical Gear Analogy
By Roger Brown
Learners read an analogy comparing an electrical transformer to mechanical gears.
The Inductive Kick of an Inductor
In this animated activity, learners study the principle behind an inductor producing a high momentary voltage while its magnetic field collapses. A short quiz concludes the lesson.
DC/AC I: Unit 8 Sample Exam
Students answer five questions concerning magnetism.
Radio Frequency Propagation
You'll focus on how radio frequencies spread under different circumstances.
Beekeeper - Sound Waves
Multiple choice test
Radio Frequency Modulation
You'll learn some concepts related to radio frequency modulation.
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