How to judge the quality of the inductor coil?

Everyone's understanding of inductor coils is different. Sometimes rod inductors like Gujing are also inductor coils. Sometimes magnetic ring inductors are also called coil inductors by manufacturers. These are relatively broad definitions. A narrower definition, such as calling an inductance that is purely winding, is called an inductance coil, and there is no magnetic core in the middle of the enameled wire, so it is simply winding. Regarding the inductor coil, it depends on how the individual defines it.

     picture：Partial Coil Inductors

How to judge whether the inductance coil is good or bad? , to see if the inductance value of the inductance coil meets the requirements. The judgment of the quality of the inductor coil is based on different divisions, and there are different judgment methods, such as whether the enameled wire is damaged, whether the pins are bent or missing, etc.

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