Battery And Power Adapter As You Principle

Battery and power adapter as you principle

Power supply and battery to the books to the books power is different, first of all that is powered by batteries DC output is pure, clean and very, DC transformer module can directly access the battery's voltage is neither possible nor need to design very high, microelectronic circuit, analog signals and digital signals to 5V voltage demand is now largely bounded by the efficiency and remove the transformer module pressure demand, 10.8V enough.

And lithium chemical emf determined core of a power saving 3.6V output voltage of only about, so many batteries are in series with three ways, 10.8V will become very popular battery voltage. Some battery 3.6V nominal value of an integer multiple of slightly larger than some, such as 3.7V or 11.2V, etc., in fact, to protect the battery or in the calculation of the design capacity of the battery when the tricky behavior.

If you use a power supply, the situation is more complex, first of all need to join the voltage regulator further filtering, ensuring that the power performance of the case is not very stable jobs, Wen Yahou the Dianya two-pronged, the way Ji books Working power supply, another way to charge the battery.

Different brand notebook power adapter, the interface is usually not the same as

Power to the books happened to that part of the time with the same battery, and to charge the battery through that part of the battery charge control circuit Cai Ke Yi Add Zaidian core on the control circuit can be quite complex to put it simply should Baokuochuji regulator, precision tunable regulator, SCR conditioning pulse output, voltage output, current feedback, the process of recording and computing chip charge, charge feedback regulation process parameters, etc., so the supply voltage must be greater than the voltage batteries before sufficient margin pressure supplied to the charge control circuit unit.

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