Learners consider why an impedance matching transformer is needed to connect an antenna to a television.
A Sample DC/AC I Exam
By Patrick Hoppe
Students complete a sample exam for DC/AC I. It provides an overview of the material presented in the course.
Series Inductance: Practice Problems
Students work nine practice problems to determine total series inductance. Immediate feedback is given.
The Transfer Function and Frequency Response of a Low Pass Filter
Students learn how to predict how circuits will respond to varying frequency. They solve for the magnitude and phase angles.
Parallel Circuit Analysis Practice Problems: Circuit #7
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.
Accrual Basis Accounting
By Julie Dilling
Learners reinforce the matching concept in accrual basis accounting through a drag-and-drop exercise.
The Reflected Load in a Transformer
By Terry Bartelt
Learners examine how the load resistance connected to the secondary coil of a transformer affects the primary current. A brief quiz completes the activity.
Learners examine the impedance matching capability of a transformer and how to select the proper turns ratio to achieve this function. A brief quiz completes the activity.
Transformer Action Demonstration
Learners view animations and video clips showing how power is transmitted from one energized coil to another.
Students read descriptions of the voltage, current, and turns ratios of the primary and secondary coils for a transformer in this interactive lesson.
Microsoft Programming Acronyms
You'll be introduced to commonly used acronyms within the computer industry.
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Give your new group a name.