Home > Products > AC to DC power adapter 12V2A > Universal AC Power Adapter

Products

Mobile Phone Power Adapter

A charger is a common charging device that converts electrical energy into DC energy and outputs the electrical energy to electronic devices such as cell phones, tablets, digital cameras, etc. through a USB cable that connects the charger to the electronic device, thus enabling the charging process. The charger does not require the use of a computer or other device to charge, it simply needs to be plugged into a wall outlet.

Send Inquiry

Description

Why do some appliances use two-pin plugs and some use three-pin plugs?
Two-pin plug is suitable for general small power appliances, such as cell phone chargers, desk lamps, etc.. These appliances generally do not have the risk of electric shock, so no ground wire is also possible.
With a metal shell, in a humid environment, the power of larger appliances, such as rice cookers, water dispensers, washing machines, refrigerators, etc. are using three-pronged plug. These appliances are generally easy to electrocution, such as washing machines in use when the water is easy to conduct electricity, there is a risk of leakage.
Metal shell or conductive material shell of the appliances must be used three-pronged plug, three-pronged plug with grounding protection, more "a foot" to prevent electric shock, electricity can be safe. Usually two-pronged plug products, replaced by three-pronged plugs can be used normally. The reason why these small appliances do not use the three-pronged plug is entirely to save costs!

Why three pins plug grounding wire pins than the other two pins to long?

This is because when the plug is inserted into the socket, this long foot will be inserted before the other two pins, so that the use of the metal shell of the appliance first connected to the earth; pull out, will be the last to pull out, so that the use of the metal shell of the appliance from the earth at last; in the process of a plug and pull, to avoid the leakage of electricity caused by electrocution accidents, more secure!