- Dec 26, 2017 -
Do you often use a car charger to recharge it, do you have any impact on your cell phone?
1, car charger for auto battery (12V car, 24V car charger power supply truck), widely used in various portable handheld devices, lithium battery charging, such as mobile phone, PDA, GPS etc.; car charge should not only consider the actual demand of rechargeable lithium batteries CV (constant voltage, constant current CC, overvoltage protection OVP), but also take into account the on-board battery environment (transient voltage spikes, system switching noise interference, EMI etc.); therefore the power management IC car charger selection scheme must satisfy: resistance to high pressure, high efficiency, high reliability, low frequency (Design for EMI) switching power supply chip; popular talk is "rugged".
2, the car charger is for the convenience of the car owners to use the vehicle power supply all the time and anywhere for the digital products to charge the accessories. Part of the high-end car charger generally includes 2 USB interfaces, which can charge two digital products at the same time. This kind of product generally has overload protection, short circuit protection, high voltage input protection, high temperature protection, four safety protection functions, to ensure safe use. Car charger in the vehicle at the same time, also can realize the household, car charger, charging, USB charging three in one function.
Principle 3, car charger is 12 volts to 5 volts for charging the mobile phone charger, due to the price limit, circuit protection circuits have many defects, almost no, if the buck and the current limiting circuit failure, will result in a 12 volt direct access to the mobile phone, mobile phone will surely die. It is also recommended to use an on-board inverter to rise to 220 volts and recharge the original charger, which is also safe to the cell phone battery. Where the car is equipped with a car charger, the output voltage is a DC point, a voltage between 12v-24v. The quality of the car charger is not very bad, it will not affect the charge of the mobile phone, but it is recommended not to use it frequently.