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Shenzhen Yidashun Technology Co., Ltd. [Guangdong,China] Business Type:Manufacturer Main Markets: Americas , East Europe , Europe , Middle East , North Europe , West Europe Exporter:91% - 100% Certs:CB, CE, EMC, FCC, RoHS, Test Report, VDE, UL

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The Abnormal Noises of Power Adapter

2020-04-27

The Power Adapter uses a Switching Power Supply and does not emit hum, but may emit high-frequency howling. The switching Power Supply works in a high-frequency state. In order to avoid magnetic saturation, a high-frequency transformer needs to leave a magnetic gap between the magnetic cores. In addition, there may be howling between the coil and the magnetic core due to process problems. The howling of transformers is mainly noisy, and there are no other hidden dangers. To eliminate this kind of calling, we must work hard on high-frequency transformers. It may not be possible to eliminate this noise for circuits with relatively low operating frequencies. However, as long as it works normally and there is noise, it does not matter. If you really hate this kind of sound, the best solution is to go with a power Adapter of the same specification.

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