magnetic_path_length

Stan Zurek, Magnetic path length, Encyclopedia Magnetica https://E-Magnetica.pl/magnetic_path_length |

**Magnetic path length**, **path length** or **magnetic path**, typically represented by the symbol $l$ for *“length”* ^{1)}^{2)}^{3)} or **MPL**^{4)} - is the effective path taken by the magnetic flux in a magnetic core or magnetic circuit. The path is measured in the units of length (e.g. metres).

The concept of path length is used in calculations such as: deriving the value of magnetic field strength H from the magnetising current^{1)} in a closed magnetic circuit^{3)}, magnetic reluctance^{4)}, effective permeability^{4)}, and many more.

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Fig. 2. Gapped core with: total magnetic path length $l$ (orange), length of core $l_{core}$ (blue) and length of air gap $l_g$ (red)

^{S. Zurek, E-Magnetica.pl, CC-BY-4.0}

Fig. 3. Gapped core with: magnetic path length in the core $l_{core}$ (blue) and length of air gap $l_{gap}$ (red)

^{S. Zurek, E-Magnetica.pl, CC-BY-4.0}

magnetic_path_length.txt · Last modified: 2021/09/27 13:37 by stan_zurek

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