Inductance Inductance indicates the inherent characteristics of the coil itself and has nothing to do with the size of the current. Except for special inductor coils (color-coded inductors), the inductance is generally not specifically marked on the coil, but is marked with a specific name.
Inductive reactance
The resistance effect of the inductor coil on the AC current is called inductive reactance, and the unit is ohms. Its relationship with the inductance and AC frequency is
Quality factor
The quality factor is a physical quantity indicating the quality of the coil, which is the ratio of the inductive reactance to its equivalent resistance, that is, /. The higher the value of the coil, the smaller the loss in the loop. The value of the coil is related to the DC resistance of the wire, the dielectric loss of the skeleton, the loss caused by the shield or iron core, the influence of high-frequency skin effect and other factors. Classification of inductors
According to the inductance form, they are classified into fixed inductors and variable inductors.
According to the properties of the magnetic conductors, they are classified into air core coils, ferrite coils, iron core coils and copper core coils.
Classify antenna coils, oscillating coils, choke coils, notch coils, and deflection coils according to their working properties.
According to the winding structure, it is classified into single-layer coil, multi-layer coil and honeycomb coil.
Classify high-frequency coils and low-frequency coils according to operating frequency.
According to structural characteristics, it is classified into magnetic core coils, variable inductance coils, color coded inductance coils, non-magnetic core coils, etc.
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