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Power supply, UPS , transformer

Power supply ( Power Supply ), generally known as uv power adapter ( Adapter ), if it is distinguished by the output voltage, it can be divided into boost or buck; if it is distinguished by design technology, it can be divided into traditional linear Power supply ( Linear Adapter / Power Supply ), or switching power supply ( Switching Adapter / Power Supply ); if distinguished by the final application location, it can also be divided into stand -alone ( Stand-alone ), or embedded ( Built-in ); Finally, according to the input / output current, it can be divided into:

AC to AC ,

AC to DC ,

DC to AC ,

There are four types of DC to DC .

Common uv electrodeless power supplies on the market can be divided into the following types according to their application range:

Information / Communications: Used in audio and video for information or communication products. Such as LCD Monitor , Scanner , Printer , FaxMachine , Modem Digital Camera, etc .;

Audio and video products: applied to the power supply of audio and video products, such as CD Player , DVD Player , radio cassette recorder, game console, and LCD TV ;

GM ( General the Use ): If not specify which product, and is a general-purpose power supply, mostly used in household appliances;

Charger ( Charger ): generally refers to the charger of a rechargeable battery, such as a professional charger for mobile phones or digital cameras, spray gun manufacturers will consider using information products to classify this type;

Inverter ( Power Inverter ): Refers to products whose input is low voltage (such as 12VDC connected to a car battery ) and whose output is high voltage 120VAC or 230CAC .

Uninterrupted uv intelligent variable frequency power supply: rectify the mains electricity to direct current, and then invert to alternating current output; at the same time charge the battery. When the mains power is interrupted, the battery will automatically output DC inverter to AC output to the device. English abbreviated as UPS .

International certification requirements related to product certification

The power supply reduces the mains power supply or lowers the low voltage to the mains voltage, so there are two versions of 100-120VAC and 200-240VAC . The small uv electronic power supply is mostly designed to be directly plugged into the wall. Globally, many types of plugs are also considered.

The power supply to meet safety regulations often ( Safety ) and electromagnetic compatibility ( EMC ), wherein the safety norms more complex, electromagnetic compatibility only Switching Power Supply will have greater trouble, Linear Power Supply's is very There are few EMC problems.

When the power supply supplies power to different products, the regulations and standards that it should comply with are also different. In principle, the products to be used in conjunction with it determine the regulations and standards that need to be met.

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