Plug classification
According to function, it can be divided into:
Headphone plug, dc plug, audio plug, usb plug, video plug, microphone plug, charger plug, mobile phone plug, etc. Internationally, household appliances are divided into three categories:
Type 1: Electrical appliances refer to appliances with only one layer of insulation. Such appliances must be equipped with leakage protectors and grounding protection (that is, three-pin plugs). Such as air conditioners, machine tools, motors, etc.
Type 2: Electrical appliances have double-layer insulation measures, and a leakage protector must be added. Grounding protection is not required (that is, a two-pin plug can be used). Such as: TV, electric fan, table lamp, induction cooker, electric ceramic stove, etc.
Category 3: Electrical appliances are appliances that use a safe voltage, generally 12-36V appliances, such as mobile phones, laptops, etc.
Divided by structure:
Sub-plugs, sockets and connectors. Plugs and sockets are generally divided into two-pole plug and two-pole grounded plug.
Electricity flows, so I tell everyone here that as long as you don't use any electrical appliance, you must unplug it to save electricity.
For power products, there are usually four terms:
1. Plug. Refers to the part that is connected to the power cord and has a male plug. The full name should be called a plug connector. For two-pin flat plugs, English is sometimes spelled duckhead (duck head, whichever is the image meaning).
2. Connector. Refers to the part that is connected to the power cord and has a female jack socket.
3. The appliance input socket (inlet). Its state is similar to 1, but it is installed on a fixed body such as electrical appliances and not connected, including the socket body.
4. Socket. Its status is similar to 2, but the installation position is the same as 3. The full name should be called appliance socket.
