What are the common faults of CD inductors

Common fault one

Secondly, the poor contact of the cd inductor means that the coil can be turned on from time to time but cannot conduct current. This is the essence of the fault of poor contact of the coil. The reason for this kind of failure is usually that the main part of the coil is broken due to friction, and the coil is disconnected somewhere but not completely disconnected. When it is exposed to vibration, it is disconnected, and there is no vibration and the contact is good. The contact at this time is completely maintained by the attribute force of the winding of the coil. Once the mechanical vibration force is greater than the attribute force of the bending, the coil will be disconnected.

Common fault two

The cd inductor is made of a continuous wire, usually only two pins. When the coil conducts current, it flows into the coil from one pin, and then flows to the other pin one turn after another. When the inductance coil has an open circuit fault, the current cannot flow from one pin to another pin, which is often called an open circuit fault. There are many reasons for the open circuit of the inductor coil. For example, the coil without encapsulation or shielding cover may be rubbed or broken during storage or transportation; if stored in a humid environment for a long time, the coil will be corroded by moisture for a long time. It will affect the performance of the inductor, so please pay attention to the details of the several items mentioned.

Common fault three

Regarding the short-circuit fault caused by the cd inductance, it is generally possible that the insulation between the coils becomes poor after the coils inside the inductor become moldy, resulting in leakage or partial short circuits. During the test, it will be found that the resistance value is smaller than normal. The more serious the short circuit, the smaller the resistance value. Coil leakage or partial short circuit will cause the coil inductance and quality factors to be unsatisfactory. If the coil is completely short-circuited (resistance value is 0), the two terminals of the coil often touch each other.

Common fault four

If the cd inductor is not welded well with the pins during the installation process, or is disconnected at the welding place, the back of the inductor will also fail to conduct current. Of course, it is also a failure of the coil. After the inductance coil has an open circuit fault, it will not play its due role. Therefore, before using the inductor, perform various installation checks to see if there are hidden dangers.

Common fault five

Surface discharge refers to the occurrence of sparkover on the outer surface of the coil of the cd inductor. The main cause of surface discharge is dirt and severe moisture on the surface. The surface discharge of the inductor often occurs near the high-voltage lead screw, so a sheath is usually installed at the connection part of the high-voltage lead screw and the high-voltage line. Once surface discharge occurs, burn marks can often be seen on the discharge part of the inductor. Therefore, if the burn is slight, it is recommended to remove the burned material and insulate the inductor.

With the increasing requirements of electronic products for cd inductance, there will be more and more problems during the use of users, so the incidence of common failures involving cd inductance is also very large. Therefore, there are some details mentioned in the inductance manual, please be sure to keep it in mind. Otherwise, even some minor improper operations will cause malfunctions. Regarding the relationship of time, what are the common faults of the above cd inductance, etc. are roughly here.