Power adapters are widely used in various industries, such as POS, cash register, intelligent security, commercial display advertising machine, face recognition intelligence, scanner, etc. Different products have different requirements for the DC size of the power adapter. The types of DC heads can be roughly divided into the following:
1. 2.5*0.7 (outer diameter * inner diameter, the same below): referred to as dc2507, it is mainly used for small electronic products and mini electronic products with limited volume, such as tablet computers; At present, tablet computers of major brands are charged with microusb interface.
2. 3.5*1.35 (dc35135): mainly used for network set-top box, USB hub external power supply, webcam, LED desk lamp, etc.
3. 4.0*1.7 (dc4017): mainly used for mobile DVD, EVD, PSP and some network set-top boxes.
4. 5.5*2.1 (dc5521): the most widely used DC round head interface at present. Surveillance cameras, some set-top boxes, led stations, digital appliances, printers, scanners, etc.
5. 5.5*2.5 (dc5525) is mainly used for equipment with slightly higher power. If some laptops, electric cars, etc.
The most commonly used of the above are 5.5*2.1 and 5.5*2.5. The shipment rate of power adapters with this DC head specification accounts for more than 95% of our company's shipment rate.
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