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Power Adapter Power Supply Equipment

Shenzhen GEO Technology Co.,Ltd | Updated: May 12, 2017

Power Adapter

Power adapter is a small portable electronic equipment and electrical and electronic power supply conversion equipment, generally by the shell, transformers, inductors, capacitors, control IC, PCB board and other components, its working principle from the AC input into DC output; The way can be divided into wall and desktop. Widely equipped with security cameras, set-top boxes, routers, light bar, massage and other equipment.

Power adapter, also known as external power supply, is a small portable electronic equipment and electrical and electronic power supply voltage conversion equipment, common in mobile phones, LCD monitors and notebook computers and other small electronic products.

Power Adapter Precautions

What is the nominal voltage and current of the power adapter (hereinafter referred to as the power supply)? First of all, the general power of the nominal voltage, refers to the open circuit output voltage, that is, do not take any load outside, there is no current output voltage, it can be understood that this voltage is the upper limit of the power output voltage.

For the use of active power regulator within the case of active components, even if the mains voltage fluctuations, the output is also a constant value, like the market generally small transformers, such as Walkman with the power supply, if the electricity fluctuations, The output of the power supply will not fluctuate.

Generally speaking, the true no-load voltage of the ordinary power adapter is not necessarily the same as the nominal voltage, because the characteristics of electronic components can not be completely consistent, so there is a certain error, the smaller the error, the higher the consistency of electronic components , The cost of production is high, so the price is more expensive.

Power Adapter In addition, the nominal current value, regardless of any power supply has a certain internal resistance, so when the power output current, the internal pressure drop will occur, resulting in two things, one is to generate heat, so the power will be hot, and the other One is to cause the output voltage to decrease, which is equivalent to the internal consumption.