Basic Knowledge of Notebook - Power Adapter

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(Free-Press-Release.com) October 11, 2009 -- Basic Knowledge of Notebook - Power Adapter
Question three: What will happen if the power supply nominal voltage is much higher than the battery voltage of my laptop?

This question who has raised is likely an outsider to electronic circuit. There are differences between the cheap oem dell power supply to the laptop and the battery to the laptop. First of all we talk about the battery-powered. The battery's output is pure DC, it is very clean and directly has access to DC transformer modules. The battery voltage is neither possible nor need to design very high. Microelectronic circuits analog signals and digital signals to 5V voltage demand are now largely bounded by the efficiency and remove the transformer module's pressure demand.

10.8V is sufficient, but the decision lithium battery chemistry EMF the core of a power-saving 3.6V output voltage can only be around. So a lot of batteries are based on three series of the way, and 10.8V have become a very popular battery voltage. Some of the battery 3.6V nominal value of an integer multiple of slightly larger than some, such as 3.7V or 11.2V, and so, in fact, in order to protect the battery (a very small number of manufacturers would discharge the battery termination voltage is set at 3.7V), or in the calculation of the battery when the design capacity of the manipulation. If you use the discounted oem dell ac adapter, the situation is more complex.

Firstly it needs to join the voltage regulator further filtered to ensure that the power performance is not a good situation stable jobs. Another way to charge the battery is that oem hp power supply to the laptop that part of the experience with the battery-powered is the same. Giving the part of the battery through the battery charge control circuit can be added to the batteries, and the control the circuit can be very complex. It simply should include the primary regulator, precision tunable voltage regulator, SCR conditioning pulse output, regulated output, current feedback, the process of recording and computing chip, etc. So supply voltage must be greater than batteries have sufficient differential voltage is supplied to the charge control circuit margin of each unit. Really added to the final voltage on the batteries is by no means 16V. Please make assured that your friends are all at ease.

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