Power supply products

Power supply, generally known as power adapter, can be divided into step-up or step-down if it is distinguished by the output voltage; traditional linear power supply or switching power supply if it is distinguished by the design technology; independent or embedded if it is distinguished by the final application position; input / output current can be distinguished finally AC to AC, AC to DC, DC to AC, DC to DC.

The power supply reduces or raises the low voltage to the mains voltage, so there are two versions: 100-120vac and 200-240Vac. Most of the small power supply is designed as direct plug-in type. If the product is planned to be sold all over the world, many plug types are also considered.

The power supply regulations usually meet the requirements of safety and electromagnetic compatibility (EMC), among which the safety specifications are more complex. EMC only has great trouble when switching power supply, while traditional linear power supply rarely has EMC problems.

When the power supply supplies power to different products, the regulatory standards that should be met are also different. In principle, the regulatory standards that should be met should be determined based on which products should be used.

Product range:

Information / communication (such as LCD monitor, scanner, printer, fax machine, modem digital camera, etc.), video and audio products (such as CD player, DVD player, recorder, game machine, LCD TV, etc.), general (if not specified for which product, and the power supply for general purpose, most of them are used in household appliances), charger (generally referring to the charging of general charging battery) Electrical appliances, such as mobile phone or digital camera professional chargers, manufacturers will consider classifying this type with information products, converters (referring to products with low-voltage input (such as connecting vehicle battery 12VDC) and high-voltage output of 120VAC or 230cac), uninterruptible power supply (rectifying the market power to DC, then inverting it to AC output; charging the battery at the same time). When the power supply is interrupted, the DC output for the battery is automatically reversed to the AC output for the equipment.

Executive standard:

EMC：EN 50091-2 LVD：EN 62040-1

Common security tests

Although often referred to as electrical safety testing, the actual evaluation goes far beyond the electrical characteristics of the product, including:

·Shock hazard test

·Energy related risk testing

·Fire test

·Heat related risk testing

·Mechanical risk test

·Radiation test

·Chemical hazard testing

·Abnormal operation test (equipment failure or failure)

For more information on automobile and auto parts testing, please contact us here.

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