Answered the second question, the third question is very simple. Do not doubt the power of your first question, first see if your books are doing, is not like the above said two usb hard drives, cpu at full speed, hard disk read and write crazy, read the disk drive at full speed, while charging the battery, loud the music, the largest screen brightness, wireless network card has
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been
detected signal, etc., make good use of power management, according to
mandate of the working status of the books reasonable adjustments is
very important. Many people do not like to use power
management, I even saw a lot of friends after the installation of the
power management software does not want any kind of management mode is
enabled, it is also fitted him to do? Will not want to see how many percent of battery left on it?
The fourth question, the question of who is likely to electronic circuits is a layman. Power
to the notebook power supply and battery to the books is different,
said first battery-powered, the DC battery output is pure, clean enough,
you can directly access the current transformer module, the battery
voltage is neither possible nor need to design very high,
microelectronic circuit, analog and digital signals to 5V voltage
demand is now largely for the sector, remove the
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transformer module's efficiency and pressure requirements, 10.8V enough, and the lithium chemical force decisions a power-saving only in the core output voltage of about 3.6V, so many batteries are in series with three ways, 10.8V will become very popular battery voltage. Some of the nominal value of the battery several times larger than the 3.6V of the whole number, such as 3.7V or 11.2V, and so, in fact, in order to protect the battery (a very small number of manufacturers will stop discharging the battery voltage as 3.7V) or in the calculation of the battery When the tricky behavior of design capacity. If you use a power supply, the situation is more complex, first of all need to join the voltage regulator further filter to ensure that the power performance is not very good stability under the circumstances, the voltage regulator after the two-pronged, all the way to the books Working power supply, another way to charge the battery, power supply to the books happened in that part of the battery when the same, and that part of the battery need to charge the battery charge control circuit can be
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added to the batteries, the control circuit
can be very complex, it simply should include the primary regulator,
precision tunable regulator, SCR conditioning pulse output, voltage
output, current feedback, the process of recording and computing chip
charge, the charge process parameters from the feedback regulation,
etc., so supply voltage must be greater than the batteries
have sufficient voltage margin pressure supplied to the charge control
circuit unit. Really added to the final voltage on the batteries is by no means 16V, please rest assured that friends worried.
Here to talk about why the first wife of the power supply is usually better than non-first wife. I want to say first wife's power theory is relatively better, in fact, may not feel different. Allowable
load is usually a safe range of input voltage, such as the nominal
value plus or minus 5%, one example is that many 2.5-inch hard drive 5v
input requirement is plus or minus 5%. Notebook, too, if the input voltage is too large or too small will result in protection circuit action, in order to stop work. But
the action in the protection of the circuit before the books have been
biased internal regulator circuit working upper or lower limit, in
principle, have an impact on device
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lifetime, but according to today's point of view, the reliability of electronic components has been quite good, as long as the design range, rarely a problem, life will not be short life than books, so this is not the main problem. More important issue may be the books of the data security, a sudden stop working for the automatic protection of the computer is a terrible thing, especially a lot of friends without the battery.
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