The period of rapid development of smart phones is only 7~8 years, the birth of a spread of the world's disease - mobile phone dependency syndrome. Now most people are the head of the party, whether it is work, travel, squat large, bedtime...... No matter where the basic can not be separated from the phone. And the mobile phone party is most afraid of things, than the phone no electricity.
What happens when the "mobile phone is no fear" happens in the car? A lot of people say that charging treasure, but the charging treasure did not bring or no electricity dilemma everyone encountered. So when this type of patient in the car to see the USB interface, it will produce a sense of security. However, the car comes with the USB interface is really suitable for charging it?
Even the old drivers do not know, those USB mouth should not be used to charge!
Most of the models, especially the 2013 production models in the design are not the "as a very important demand for mobile phone charging", designed to the car USB port is often used to transfer audio data set.
This class only for data transmission USB interface real output current is only 0.5A 5V\/, and this figure will bring what effect? Is actually very simple, the input current needs of most mobile phone is 1A, once the USB interface and the inside connection, the interface can only 0.5A output current, the charging time is prolonged, severe for mobile phone users, slow charging efficiency is obviously not acceptable.
The old vehicle cigar lighter, how to effectively use?
Since the USB port can not charge, the old models with cigar lighter to support the car charger to charge digital products "is still the best choice in the car.
First appeared on the market that a three charger, clutter will not only cause the coil, if the external power is too large, will blow the fuse. Therefore, in recent years, the popular single plug to turn USB's bullet type car is more secure in the security. Compared with the new bullet train will be equipped with 2 USB interface, the total output power control within the 15W, not only to ensure the charging speed, while taking into account the safety of charging equipment.
Of course, bullet car charger products on the market a lot, because of its production and high technical threshold, but absolutely do safe and efficient with high quality has a high degree of difficulty.
First, the function must ensure the accurate current and voltage control, which requires a control valve chip to protect the stability of the current voltage.
The second is the overload protection and short circuit protection, because the car itself will heat hot, if there is no such protection is easy to cause combustion, the circuit board directly hurt the car.
The last is the most common plastic material, plastic deformation, but will even burn in high temperature for a long time, there are security risks; at the same time although the flame retardant ceramic heat conduction effect is good, but is easy to brittle damage; the ideal of pure metal material or solid, and fast heat conduction, good security at the same time, if the security, in appearance by drawing or polishing effect, texture absolutely beyond plastic products.
Consider the durability and the use of experience, as far as possible to choose the big metal car charge
Metal car charger is small, but the material characteristics of advantage, has prompted some big brands such as research and development products, compared to those of copycat brand, brand production car charger, charging protection will often do more comprehensive safety protection measures aiming at the problem of over-voltage and over-current etc. to join, and therefore more the owners favored.