WebJul 11, 2024 · 问题结论. 12V1.2A能不能用12V2A的电源代换. 这个是肯定可以的,完全没问题,根据用电器要求的输入电源电压必须与设计电源电压相符合,才可以正常工作,电源电压高于设计电压,会造成用电器设备应电压高而损坏,电源电压低可能会造成电器工作不稳定,甚 … WebMay 6, 2024 · and i need protect my telephone whit 500mA, no 1A but whit 1A is worging Re: 5V 500mA problem. You might need the full charge of three AA batteries to charge the cellphone only once. The 7805 is very inefficient. Better use a micro-power boost converter. No need to protect a cellphone from current. Just connect a 5volt supply.
usb - Can I use a charger with more output amperage than the …
WebJan 7, 2024 · 1、从参数上来看,2.4A通过的最大电流要比2.1A要大,外观上其实没什么区别. 2、从充电上来看,如果搭配同样的充电头,其实充电的速度并没有特别的明显区别。. 3、从搭配数据线上来看,2.4A可以搭配3A的数据线,充电会快一些,而2.1A的只能搭配2A或2.1A的数据线 ... WebApr 9, 2024 · 2A的充电器代表它最大输出充电电流2A,1A的最大输出充电电流为1A,而充电器的输出电流跟它充电电池的阻抗有关,而不是2A充电器一定是只输出2A的电流。. 电 … batas normal kolesterol ldl dan hdl
充电器是5v1A,但是数据线是2.4A的,有什么影响吗? - 知乎
WebMay 27, 2013 · 74. Yes, it is absolutely safe to charge a device with a charger that has more current capacity than needed. Ohm's law tells us the relation between current, voltage, and resistance: I = V / R (current = voltage / resistance) Since the voltage is held constant (5V), the only factor that determines current draw is the load (another term for ... Web如果电压相等,充电头1A和2A的区别在于:. 1、外观上2A的要明显比1A的大;. 2、再就是充电快慢,理论上用2A的比1A的可缩短一半充电时间,但如果电池容量较小,用2 A 的充电器就容易损坏电池或减少寿命,一般锂电池充电电流不能超过0.5C. 3、1A和2A是说明你 … Web快充充电头上标“输出:5V~2A或9V~2A”,指的是该充电器有两种输出模式,但是默认情况下是输出5V2A的,并不会输出9V2A,只有该充电器与手机匹配才会输出9V2A快充。. 也就是说使用该快充充电头充充电宝或者其他品牌的手机都会只输出5V2A,因此没必要担心会 ... tanz stoppok