Do you need to unplug the charger of mobile phone?
Sihai network: as smart phones become more and more powerful, people also rely more and more on mobile phones. However, the battery power has always been a hard injury to smart phones. I believe that many people in order to charge conveniently, the charger has been stuck in the socket for thousands of years, but there will be a big hidden danger.
Recently, someone on the Internet said that the charger should be unplugged in time to avoid potential fire hazards, so should the charger be unplugged? Let's take a look at it together!
Experts said that the charger is a device that transforms high-voltage into low-voltage DC. If the charger is placed on the patch panel for a long time, it will continue to heat up, thus aging the accelerator parts and materials. In this way, it is easy to generate short circuit or high-voltage breakdown, resulting in fire hazards. After watching a cold sweat, turn to remind!
In the reporter's street interview, the opinions of the passers-by are different, but most of the interviewees said that they usually did not unplug the charger after the mobile phone was charged. So, will the charger on the socket that is not connected to the mobile phone still work as described on the Internet?
The reporter collected five kinds of mobile phone chargers with different brands and prices and came to the school of physics of Peking University to find out.
According to the test, three of the five chargers showed current reading when they were not connected to the mobile phone. How much current does the charger work when charging normally? Then connect the mobile phone to continue the test!
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After the experiment, it was found that when the charger on the socket was not connected to the mobile phone, it was much smaller than the current of normal charging, some of which were less than one tenth of the total. In this case, if it was kept on the socket for a long time, would it be as serious as netizens said that there would be a fire hazard?
Lei Yi'an, associate professor of School of physics, Peking University: from the experiment, it is found that as long as the charger is connected to the circuit board, even if there is no load, it will generate a certain current, some of which are small, some of which are relatively large. This is because the charger is a transformer and rectifier device. After it is plugged into the circuit board, it will be powered on, so it will consume a certain amount of current, and it has been in the working state!
On the other hand, the charger is a device that transforms high voltage into low voltage direct current. If the charger is placed on the patch panel for a long time, it will continue to heat up, thus aging the accelerator parts and materials. In this way, short circuit or high voltage breakdown will easily occur, which will cause fire hazards.
This article is provided by the editor of Sihai life channel. To learn about life tips, please pay attention to Sihai life channel to make your life easier!
In August 2009, two people were killed and two injured in a fire in a residential building in Haizhu District, Guangzhou, caused by a short-circuit explosion of a mobile phone charger.
In July 2016, in a residential area of Hunan Province, the charger on the living room socket that had not been unplugged for more than two months failed, resulting in a fire, and the owner and daughter were burned.
On February 19, 2017, a fire broke out in a house in Heyuan City, Guangdong Province. After the fire was put out, it was found that the fire was probably caused by the hot charger igniting the nearby clothes.
In China, similar fires are not uncommon. How can we deal with first aid in case of accidental fire of chargers or similar electrical appliances?
Fu Yu, instructor of Sihui squadron of Chaoyang District public security fire brigade, Beijing: in case of an accident and such a fire, we must cut off the power supply at the first time, and cut off the whole house if necessary. Do not use water to fight, because water is conductive. In addition, if water is splashed on electrical appliances or chargers, it is easy to burst or explode. In this case, we recommend that you use heavy clothes or bedding for beating or bedding, and call the police in time.
There is no small matter about fire, sometimes some bad electricity habits may cause fire, so we should pay more attention to the safety of electricity in our daily life to prevent the fire.
This article is provided by the editor of Sihai life channel. To learn about life tips, please pay attention to Sihai life channel to make your life easier!