The development of the times, the advancement of science and technology, and the continuous increase in per capita income have spurred the people's living conditions to become more and more impressive. As a large-scale communication products and transportation supplies, they have entered the family. Speaking of mobile phones and cars, although they are very different, these two products have a certain relationship.
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Nowadays, the power storage capacity of mobile phones is not as good as one day. When people drive a car, if the mobile phone suddenly loses power, it will have a great impact and delay things. Therefore, the car charger is widely used in most car owners. However, the quality of car chargers is uneven, and many car owners do not know how to use them correctly. Once they have problems, they will bring you huge losses. Today, Xiaobian will share with you the knowledge about car-mounted vehicles.
First, the working principle of the car charger
The trick is to convert the 12V voltage of the car cigarette lighter socket into a 5V USB voltage, and then connect the power cable to charge the phone. Under normal circumstances, the car charger converts 12V (car 12V, truck 24V) DC power into 5-20V DC power for car mobile device charging, featuring low power consumption, simple and convenient, and low price.
Although this configuration is simple and easy to use, improper operation can cause damage or even danger to electronic equipment.
Reminder Note 1: It is best not to insert the car charger or connect the power supply to the mobile phone before starting the vehicle, so as to avoid the unstable voltage generated by the vehicle starting to damage the charger and the mobile phone.
Reminder Note 2: When the car charger has been used for a long time, do not use harsh chemicals, cleaning agents or strong detergent to clean the charger. Wipe it with a wet tissue and dry it to avoid damage.
Reminder Note 3: Pay special attention to not throwing, landing, knocking or vibrating the charger at random during use. Especially in summer, when the vehicle is exposed to the sun, when the temperature inside the car exceeds 45 degrees, do not use the charger for a while, which will seriously damage the circuit board inside the car charger.
Reminder Note 4: The car charger is an electronic device. During the use of the car owner, do not put it in a humid environment for a long time, so as to avoid different degrees of corrosion or oxidation of its internal electronic components. If you accidentally spill water on the charger while driving, remove it and dry it to avoid damage to the board.
Reminder Note 5: After the vehicle is turned off, the car charger should be unplugged. If it is plugged into the power connector for a long time, the contact between the two parts may be corrupted and difficult to remove. Although 80% of the vehicles are powered by the cigarette lighter after the vehicle is unplugged, some of the car's cigarette lighters are continuously powered.
Careful use of the car charger is one aspect. On the other hand, it is also necessary to pay attention to the purchase of products with overload protection.
The USB specification requires no more than 5A for current overload protection. The reason why the car charger needs overload protection is because when the output current is too large and exceeds its normal output value, the life of the charger component will be shortened or the temperature will be too high, resulting in damage or even burning. Therefore, the car charger used in the car must have overload protection measures.
Second, select products with output current above 1A
The input voltage of the car charger on the market is basically 12V-24V, the output voltage is 5V, and the output current is about 1A~4A. However, some "three no" or "cottage" products generally have a phenomenon of charging current false standard. If you are charging while navigating with your mobile phone, the inferior charger will not only provide normal charging but will continue to degrade.
Third, share suggestions: choose regular licensed
To buy products that have been certified by regular manufacturers, do not buy or use three products, otherwise there will be no complaints about quality problems. In particular, you can't buy cheaper brands under 20 yuan. At present, the price of car chargers for domestic mainstream brands is around 20-100 yuan. When buying, remember to buy licensed products marked with Chinese.
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