Chapter 05: Dot Convention

In circuit analysis, the dot convention is a convention used to denote the voltage polarity of the mutual inductance of two components.

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Dot convention is a technique, which gives the details about voltage polarity at the dotted terminal. This information is useful while writing KVL equations.

If the current enters at the dotted terminal of one coil (or inductor), then it induces a voltage at another coil (or inductor), which is having positive polarity at the dotted terminal.

If the current leaves from the dotted terminal of one coil (or inductor), then it induces a voltage at another coil (or inductor), which is having negative polarity at the dotted terminal.


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