As we can see, the types of charging devices are increasing. The phones need to be charged, the cars need to be charged, electricity is becoming the main power source in our daily life. Depending on this, we need different types of charging devices to refill our gadgets. A well known device is charging socket.
When i was young, my mother stopped me when i try to touch the sockets. This frightened thing scared me until i saw the sockets are everywhere. The first few generations of socket are less safer than now. So let’s have a look on the revolution of sockets.
This black one was utilized in 1950. At that time, people have to put the screws onto the wall and connect the wire by themselves.
You must have seen this kind of televisions. They are old but are widely used in 1970-1980. People are still using the sockets above. Interesting, people would hide the sockets by some barriers. The plugs of tv wouldn’t be pulled out until years later.
In 1995, Bull brand came into the world. As you can see in the picture, i can still see many sockets with this specification are being sold in the market right now. Bull brand is one of the leader brands of this kind of products. In early period, Bull brand sockets were designed by Mr Ruan, he also guarded a pass for those sockets. Until today, every unit is with a switch button on a socket.
In 1997, the first edition of International Standard released. With the number GB 2099.3-1997. It started to prosecute in 1999.
This is the second edition of International Standard released in 2008. Standard number: GB 2099.3-2008. At that time, 10% of the fire disaster resulted from the using of low-quality sockets. It started to prosecute in 2010.
This newest standard was released in 2015 and will start to prosecute in 2017. Standard number: GB 2099.3-2015. Currently, Bull brand and other brands have released their newest charging devices.