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Transformer. Spiral Inductor Calculator. A transformer. Polarity of transformer. B. B. I. B ind. B ind. I. I. Symbols of transformer. Dot Convention. With the reference direction for a current enters the dotted terminal of a coil, the
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Polarity of transformer B B I Bind Bind I I
Dot Convention With the reference direction for a current enters the dotted terminal of a coil, the reference polarity of the voltage that it induces in the other coil is positive at its dotted terminal.