The Power Supply Adaptear

The power adapter is a conversion device for small portable electronic equipment and electronic appliances. It is widely used in telephone equipment, game machines, language repeaters, walkmans, notebook computers, cellular phones and other equipment. The power adapter is generally composed of a housing, a power transformer and a rectifier circuit. According to its output type, it can be divided into AC output type and DC output type; according to the connection method, it can be divided into wall-plug type and desktop type. The power adapter is widely used in various fields such as industrial automation control, military equipment, scientific research equipment, LED lighting, industrial control equipment, communication equipment, power equipment, instruments and meters.

There are usually several items on the label of the power adapter that need attention. The first is the model of the adapter. For example, the model of this adapter is 1220. It tells us a few pieces of information, that is, its manufacturer and main parameters. 1220 is to explain this The adapter is 12W; the second is the adapter's INPUT, commonly used in China is 100-240V ~ 50-60Hz, which shows that this adapter can work normally under the voltage of 100V-240V The third is the OUTPUT of the adapter. Two numbers can quickly calculate the wattage of the adapter. For example, this adapter has a voltage of 12V*current of 1A=12W (power), indicating that the Power Supply is a 12W adapter.

The power adapter of most notebook computers can be suitable for 100 ~ 240V AC (50/60Hz). Basically, most laptops have external power supplies and connect them with a power cord, which can reduce the volume and weight of the host. Only a few models have the power supply built into the host.

There is a nameplate on the power adapter, indicating the power, input and output voltage and current and other indicators. Pay special attention to the input voltage range. This is the so-called "travel power adapter". If the mains voltage is only 110V, the country At this time, this feature is very useful. Some parallel notebook computers are only sold in the country of origin. Without this compatible voltage design, there is even a single input voltage of 110V, which will burn when plugged in at 220V mains voltage in China.

Best regards,

Mandy Huang