What are the DC plug specifications of the power adapter?

April 10, 2023

The power adapter and the device connected to the power plug is also known as the DC head, DC head there are many kinds of specifications, the next power adapter manufacturer YHY for you to explain in detail what the power adapter DC plug specifications.

First, in the case that we have calipers, we can identify by measuring the inside diameter of DC head.

Second, if there are two kinds of DC heads in hand at the same time, in the case of the same outer diameter specification, then we can get a naked eye to identify the DC head of 5.5*2.5MM with large inner diameter and 5.5*2.1MM with small DC head.

Third, if there is neither caliper nor two DC heads in the hand at the same time, then we can only look for the following two things, toothpick and cotton swab, generally the diameter of a regular toothpick is generally 2MM, cotton swab bamboo branch diameter of 2.5MM. Of course, there are many sizes on the market that are not standardized. What we mentioned is relatively standardized.

If the cotton swab is inserted into the bamboo branch just right, it may be 5.5*2.5MM DC head, while the one that cannot be inserted into it may be 5.5*2.1MM DC head. If the toothpick is inserted into it, it may be 5.5*2.5MM DC head that can be shaken. If the toothpick is inserted into it only a little loose, it may be 5.5*2.1MM DC head, because the diameter of the toothpick is still 1MM too small.

Of course, the second and the third way of discrimination is not an accurate way to distinguish, can only be used as a simple way of preliminary identification, but not as data adoption, after all, the diameter of the toothpick and cotton swab bamboo branch on the market is not a uniform standard, there are many toothpick diameter and cotton swab bamboo branch diameter size is not standardized, and even if can be inserted in the identification process, but there are still The corresponding loosening can only be felt by feeling. If you want to get a more accurate inner diameter, it is recommended to use calipers to measure.

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