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Drum Core Inductor
An I-type inductor coil generally consists of a magnetic core or iron core, bobbin, winding assembly, shielding cover, encapsulation material, etc.
The bobbin of an I-type inductor serves as the winding support for the copper coil. I-type inductor is one of the properties of electronic circuits or devices, referring to the electromotive force generated by electromagnetic induction that opposes changes in current when the current varies.
Some larger fixed inductors or adjustable inductors (such as oscillator coils, choke coils, etc.) — commonly used I-type inductors are regarded as the vertical version of axial inductors. They are as convenient to apply as axial inductors, but conventional I-type inductors can be made larger in size, thus supporting higher current capability accordingly.
In most cases, enameled wire (or cotton-covered wire) is directly wound on the bobbin, and then magnetic core, copper core or iron core is inserted into the inner cavity of the bobbin to increase inductance.