By Terry Bartelt
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Define Current ratio and turns ratio.
Learners consider why an impedance matching transformer is needed to connect an antenna to a television.
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.
In this animated activity, learners see that changing the resistance value of the load in the secondary of a transformer causes current to vary in the primary.