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12 cards from this deck
Current flowing in one direction at constant voltage
Horizontal line
Current that reverses direction at regular intervals
Alternates between positive and negative values
More efficient transfer; easy to transform P.D.
50 Hz
230V
+230V and -230V
50 times per second
Shows the pattern of an electrical current
f=1tf = \frac{1}{t}f=t1
Time of one cycle
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