In the PFC switching power supply, the switching regulated power supply is a very important part. The difference between th
High-frequency switching power adapters currently occupy nearly half of the domestic market. Its unique advantages of sma
1. Layout and configuration according to the actual use and installation conditions of the test product, including some s
1. Appearance 1.1. Surface 1.1.1. Check whether there is any stain on the surface of the power adapter. 1.1.2. Whether
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