Weak current College】 【inductors main parameters】.

<br> <br> 1, inductance: <br> <br> Inductor inductance on callout size. Expresses inherent characteristics of the coil, reflect the inductance coil storage capacity of the magnetic field can also reflect changes in the current inductors generated by EMF .. units to hang (H). Its size and number of turns of the coil, wound and core materials, and other factors, has nothing to do with the current size. The more the number of turns, wound coil is set, the greater .the amount of electric feel; coil inside the core of the non-core; core inductance of high permeability rate of inductance. <br> <br> 2, allows the error: <br> <br> Inductance inductance of the real relative to .the nominal value of the maximum permissible deviation range known as tolerance. <br> <br> 3, inductive reactance XL: <br> <br> Inductance coil on AC current blocking effect called inductive reactance XL, unit is ohm. It and inductance .L and AC frequency f relationship to XL = 2 π f L. <br> <br> Q 4, quality factors: <br> <br> It is a measure of the quality of a coil is a physical quantity, use the letter ."Q". Q the higher the value, indicating that the inductance coil power consumption, the efficiency is higher, but the "quality", the better. Q-value and structure of the coil (wire-weight, multiple or single unit, .the round method, cores). For inductive reactance XL and its equivalent resistance ratio, ie: Q = XL / R-coil q value higher, the more small loop of loss, the Q value and coil conductor DC resistance, skeleton of dielectric loss ., shielding enclosures or core loss caused by the high-frequency effect of skin effect and other factors relevant to the coil of the Q value is typically a few decades to 100. <br> <br> 5. nominal current: <br> < .br> Means the coil allows current size, often begin with the letter A, B, C, D and E to represent the nominal current of respectively 50, 150, 300, 700, 1600 Ma. Large volume of electric feel, nominal currents and .inductance is marked on the envelope. <br> <br> 6, distributed capacitance (parasitic capacitance) <br> <br> Coil turn to turn and turn, coil and shielding enclosures, coil and capacitor plate there is called distributed capacitance. The .existence of distribution capacity so that the coil of the q-value decreases, stability, and thus the coil of distributed capacitance as small as possible. <br>.