Calculate the transformer ratio of the transformer in Problem 18.23 when it is used as a step-up transformer.
Problem 18.23
The high-voltage side of a step-down transformer has 800 turns, and the low-voltage side has 100 turns. A voltage of 240 VAC is applied to the high side, and the load impedance is 3 ? (low side).
Find:
a. The secondary voltage and current.
b. The primary current.
c. The primary input impedance from the ratio of primary voltage to current.
d. The primary input impedance.
Analysis:
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