Inductor Calculator

by

Wenton L. Davis

An inductor is a coil of wire around some core. Inductance, L (measured in Henries, H), is the measure of a magnetic field created by a current flowing through a coil of wire. The properties of an inductor include:

µ | Permeability | The permeability is how much the core will allow
lines of flux to compress inside of it. It is measured in
Henries per meter (H/m). When researching permeability, some
tables will show µ while other tables will show
µ_{r}, which is the "relative permeability." The
relative permeability is relative to the permeability of a vacuum,
µ_{o}=4πx10^{-7}=1.2566x10^{-6}. |

N | Number of turns | The number of turns of wire around the core. |

A | Cross-sectional area | The area of the core as a cross-section,
measured in square meters, m^{2} |

l | Length of the coil | The length of the coil, measured in meters, m.
Interesting question: what happens when the length of the coils of wire is significantly less than the length of the core? |

L=µN^{2}A/l

Inductor design

Design your inductor based on physical parameters:

Reach me by email (wenton@ieee.org)