中检通检测

Power supply, UPS, transformer

Power supply (Power Supply), commonly known as the UV power adapter (Adapter), if the output voltage to distinguish, can be divided into step-up or step-down; if according to the design technology, can be divided into the traditional linear power supply (Linear Adapter/Power Supply), or switching power supply (Switching Adapter/Power; Supply) in the final application position to distinguish, also can be divided into independent type (Stand-alone), or embedded (Built-in); the input / output current division, can be divided into:

AC to AC,

AC to DC,

DC to AC,

DC to DC and other four categories.

The common UV power supply in the market can be divided into the following types according to its application range:

Information / communication class: used in audio and video in information or communication products. Such as LCD Monitor, Scanner, Printer, FaxMachine, Modem Digital Camera and so on.

Video and audio products: the power supply used in video and audio products, such as CD Player, DVD Player, audio recorder, game machine, and LCD TV and so on.

General purpose (General Use): if not designated for what products, and for general use of power supply, mostly used in household appliances;

Charger (Charger): generally refers to general chargeable battery charger, such as mobile phone or digital camera professional charger. Spray gun manufacturers will consider classifying this type with information products.

Converter (Power Inverter): refers to the input of low voltage (such as connecting car battery 12VDC), output to high voltage 120VAC or 230CAC products.

Uninterrupted UV intelligent frequency conversion power supply: the city electric power is rectified as DC, and then invert to AC output; at the same time, the battery is charged. When the electricity is interrupted, the output of the battery is automatically converse to the AC output to the equipment. The English shorthand is UPS.

Requirements of international regulations related to product certification

The power supply will reduce power or low voltage to the voltage, which has 100-120VAC and 200-240VAC two versions, UV electronic power supply of small are designed to directly plug wall, if the products are sold all over the world plan, also consider the plug type many.

The regulations of power supply usually conform to the requirements of safety (Safety) and electromagnetic compatibility (EMC), and the specifications of safety are more complex. Electromagnetic compatibility is more difficult only when it is Switching Power Supply. Linear Power Supply rarely appears EMC problem.

When the power supply is supplied to different products, the regulations and standards that they should comply with are different. In principle, we need to match with what products to use to decide the regulations and standards that they need to meet.