the most important characteristic of mobility laptop, how to improve its flexibility and stability notebook computer face priority, and the power supply parts as laptop computers, but also guarantee their work effectively the key link. Notebook computer power system is second only to the CPU and the motherboard, display the third-largest key components. Power system including the power adapter, rechargeable batteries and power management system, etc.
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Considering the heat dissipation problems power adapter is independent of notebook computer host, generally applicable outside phase failure is 100V - 240V communication input, will exchange into a dc for host work. In addition there is inside machine battery function, to prevent long charging reduce battery life, machine high-bright detection circuit and indications for charging status and can be used in battery full automatic charging loop is cut off. Thus, laptops for power is demanding, stability and anti-jamming is the main indexes inspection power adapter. In order to avoid input voltage ripple coefficient excessive or sudden high current shock and burned power adapter, as far as possible with overload protection connected to the power socket.
Once appear outage phenomenon, the battery will reflect its superiority. Notebook portability largely depends on the battery, the battery is the support of the whole power system of the heart, so you can't belittle it. Notebook computer USES is the earliest nimh batteries. Such batteries although also has good performance-to-price ratio and large power, but the battery of continuous discharge time smaller and thus was soon replaced lithium-ion batteries. Lithium battery energy storage density is larger, may at any time charging and lasted for a long time, generally in discharge 3 hours. In improving battery performance increase battery capacity at the same time, high-grade notebook computer often improvement for intelligent slot, floppy disk structure except the floppy disk storage equipment such as outside, still can connect second battery, the battery capacity double.
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Laptops often have three battery, the first one main battery, in ac not connected, under the situation of main battery guarantees that the machine run normally, at the same time give backup and real clock battery. Main battery generally can continue to supply 3.5 hours. Second is the backup battery, it ensures that continue to implement the start-up mode, data and operation procedures required power. Backup Power supply time in 1 hour. The third piece real-time clock batteries and it for machines internal real-time clock and calendar power supply and the maintenance system configuration data preservation provide energy. Can continue to work one month. For how to extend the life of the battery, lenovo as Toshiba laptop senior agent, puts forward some advice to the user.
First, users in a backup battery circumstance, should take turns to use, decrease as far as possible on a battery of excessive consumption. Secondly, in the long-term use your laptop, must the battery from the machine uninstalled, avoid to notebook damage. Third, when the battery completely filled, should disconnect ac input. Because of the excessive charging can make batteries overheating, shorten the life of the battery. Finally, in the battery too cold or too hot, nor charging, because charging appropriate temperature in Celsius between 10-30.
Of course notebook computer is on the increase battery life at the same time, still can by other ways to save notebook computer power. Notebook computer power except the time length depends on battery service life of the machine itself also affect its power management working hours. If the battery power supply system management is better, it in the work reward is bigger also. Notebook computer contains below several common advanced power management functions:
Operating mode: operating mode can be controlled processor speed or setting province electricity timer.
Standby mode: when the user in a short period not operate the machine, can enter standby mode.
Suspend mode: when the user long time away from the computer, can enter suspend mode.
Sleep mode: the user to leave the office within days, notebook computers can enter sleep mode.
We by Toshiba notebook computer, for example, it can use three mode Settings, its supply methods respectively for standard model, power saving mode and completely mode, through three models of circular conversion, by adjusting the screen brightness, each component voltage power consumption to meet in different environment of work requires.
Using power management program realization power saving control is also very effective and feasible method, now Toshiba notebook computer has been almost universally adopted this intelligent electricity-saving management technology, it is using the software method of each main power consumption parts of electricity state control of the temporary not working parts reduce even stop power supply. Such as management program detect users than certain time unused keyboard will automatically turn off screen background eliminated, Detect unused hard disk is will turn off disk drive power supply, etc. In the preparation work of the state, CPU clock stopped, display and hard disk drive power cut, power consumption can reduce more than 70%.
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Of course the current power system realized by power management function of applied for, great majority USES degree take no account of system in place of work of the state, but hypothesis systems and system equipment has been available, and therefore often cause some problems, and how to solve these problems, but also need laptop computer manufacturers, and battery manufacturer continuous effort.
