Coil Polarity Assignment Help

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Coil Polarity:

The  symbol for a transformer provides no indication of the phase of the voltage across the secondary. A phase of in that voltage depends on the direction of the windings around the core. In sequence to solve this problem and polarity dots are used to display the phase of primary and secondary signals.  A voltage is either in phase show in below figure or 180° out of phase along with respect to primary voltage.

1619_Coil Polarity.png

Figure: Polarity of Transformer Coils

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