The following formulas can be used to calculate the air core inductor inductance:ī is coil winding wire diameter in inches.Īir core coils have lower inductance than ferromagnetic core coils, but are often used at high frequencies because they are free from energy losses called core losses that occur in ferromagnetic cores, which increase with frequency. Air core coils have lower inductance than ferromagnetic core coils, but are often used at high frequencies because they are free from energy losses called core losses that occur in ferromagnetic cores, which increase with frequency. The cores in the air inductors are made up of ceramic material which gives the right strength to the product. That is to say, an air core inductor is a type of wire coil that has no solid core inside the coil. Air core coil is an inductor that does not use a magnetic core, and the term refers to coils wound on plastic, ceramic, or other nonmagnetic forms, as well as those that have only air inside the windings.
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