news

If the chip inductor has abnormal noise during the operation of the equipment, what is the reason? How to solve it? What is the analysis made by the editor of Xinchenyang Electronics below?

During operation, due to the magnetostriction of the chip inductor, it will emit abnormal noise through the transmission medium amplification, resulting in poor product experience. This situation is generally caused by the unqualified production process and product quality of the chip inductor. Abnormal noise occurs during the operation of the chip inductor, and its product quality and production process need to be inspected:
1. Product quality inspection:
Look at the current waveform of the inductor. If the waveform is normal, then the quality of the inductor has a problem. If the waveform is abnormal, then it may be a circuit problem, and circuit debugging is required.
2. Production process inspection:

Check whether the current of the circuit and the wire diameter of the inductor are consistent with the requirements, and check the inductor winding process, such as whether the winding is loose.
Solution to the abnormal noise emitted by the chip inductor:
1. Noise is generally unsolvable. Once abnormal noise occurs during the use of the chip inductor, the only solution is to replace it.
2. For the unused SMD inductor products, you can simply and effectively reduce the noise caused by impregnating the varnish, strengthening the dispensing, making the winding more solid, changing the iron core with better magnetostrictive effect, etc. Influence.