source:Charger Popular:adapter release time:2021-07-13 10:18:14 Article author:sznbone
How to classify these power adapters? First of all, you will think of item 8504, but which subheading should it be classified into?
8504 has always been a difficult point for most homecomings, especially the subheading under 8504.40, which is even more difficult to distinguish. The difficulty in distinguishing is whether it is a regulated power supply.
85.04 Transformers, static converters (for example, rectifiers) and inductors:
……
40 — Static converter
8504.401 ———Regulated power supply
……
8504.409 ———Other static converters
According to the description of the 8504.4014 DC stabilized power supply in the notes of the national subheading, it is known that the output end of the stabilized power supply needs to be processed by the stabilized circuit.
The so-called voltage stabilizing circuit means that by detecting the voltage value of the output terminal, the detected voltage value is fed back to the control circuit, and the control circuit changes the voltage value of the output terminal by adjusting the voltage value of the input terminal to achieve stable output voltage. A DC stabilized power supply that uses stabilized diodes for stabilized voltage.
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