Total Length of a Wire Formula

The Total length of a wire in a transformer is determined by multiplying the number of turns of a coil with the perimeter of the bobbin. Use the below total length of a wire formula to determine the heat losses you get in a transformer. The length of wire definitely has an effect on current and voltage. Resistance is directly proportional to length. As the length increases, resistance increases, as a result, current decreases. A good design will minimize heat loss but will increase cost.


Total Wire Length = Number of Turns × Perimeter of Bobbin

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The total length of a wire formula is used to calculate the wire length in both the primary and secondary sections of the transformer. The wire size will depend on the current you require.

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