Encyclopedia Magnetica™

Calculator of inductance of a gapped inductor

For a simple gapped inductor, with a magnetic circuit with a uniform cross-sectional area throughout the whole magnetic path, the value of inductance L can be calculated from the following equation:

$$ L = \frac{μ_0 ⋅ N^2 ⋅ A}{ l_{gap} } $$

(H)

Note: The equation is valid only for a simple magnetic circuit, with cross-sectional area of the core and gap being equal, and if l_core » l_gap, and µ_core » 1.

Calculators, Permeability