Vostro AC Adapters
The display Vostro adapters below include Vostro 1014, Vostro 1200 series, Vostro 1400 series, Vostro A860N, Vostro A840, Vostro A 860 and Vostro V 1200 series. You are reminded of getting acquainted with the nominal voltage and current and the basic adjustment of your Vostro adapter in view of the safety and longevity of the laptop and adapters. Please feel ease to purchase premium adapters according with the original specifications. If there is anything we can help, please contact us with no hesitation!
Select Dell Vostro AC Adapters by Model Number
Basic knowledge of laptops?AC adapters
The issues of laptop voltage, electricity power, power supply and load has been discussed and concerned a lot, as follows:
1.What is the meaning of nominal voltage and current?
2.In the electricity of the same nominal voltage, can different electricity be used on the same laptop?
3.Why is my laptop warmer than others when we are using the same machine?
4.What can I do since the nominal voltage of battery is much higher that of my laptop?
Firstly, the nominal voltage of AC adapter refers usually to the open circuit output voltage with no output current. Correspondently, it can be regarded as the upper limit of output voltage of the electricity. To the circumstance that the inner of the electricity has been inserted initiative voltage stabilization or voltage reference element, you can detect the nominal voltage with DC voltmeter with high internal resistance. even the electric supply is not stable, the output voltage is stable value. But with the cheap transformer on the market, take the one of personal stereo for example, made of traditional magnetic core transformer, four two-electrode valve rectifications plus a filtering capacitance. If DC voltage made with this material, the result detected will be greater than the nominal voltage.
Generally speaking, the real empty load voltage of average AC adapters is not totally identical with the nominal voltage, because the characteristic of electronic components are not totally the same and errors in small range from 0.1% to 5% are permitted. The smaller the error is, the higher consistency of electronic units is, the high cost it is and the more expensive it is.
The second one is the nominal current of electricity. Any power has a range of internal resistance. When the current is exported, it will cause pressure drop inside, equal to the current multiplied by the resistance. It also causes other two results. One is the heat is heat radiation, the other is voltage debasement. Having considered the heat radiation in the process of design, manufacture usually restricts the current in a range. When the current reaches this number, the output voltage slows down to 95% or other ratio of the nominal voltage. If the load of resistance is too low and the output current exceed the nominal electricity, two sequence will happen: first, single units radiation surpass the heat radiation capacity resulting in burning and damage the electricity; the other is the allowance of heat radiation, reflecting on the further reduction of output voltage, if too much, serving to fail the AC adapter.
The second question: labeled the same voltage but different current, can different adapters apply to the same laptop?
The principle lies in that adapters with greater current can replace small one. Some may misunderstand that electricity of high nominal current will burn out the laptop, seeing the name. actually, the current depends on the load, namely the operation condition of the laptop. When the laptop is operating in high speed, the current is high; when the laptop comes to standby, the current is smaller. More current allowance exists in AC adapters with higher nominal electricity, not productive of higher temperature or lower output voltage. On the contrary, if you place AC adapters of greater current with that of smaller current, it may result in some hazard. Once your laptop is linked to many external devices, for example, two USB hard disks, CPU operating in full speed, one base, one hard disk, and one charging battery, you had better consider whether the AC adapter is available to cook eggs. Therefore, users are suggested not to take place of AC adapter with that of smaller current.
The third question is simple. Do not doubt whether there is problem with your AC adapter. Take a look at what your laptop is doing?is CPU operating at high speed? Is the player playing music loudly? Is the brightness of your screen utmost? This time you may need an electricity management to take charge of the electricity supply.
As for the fourth question, the one who brings forth the question may be a layman. The way AC adapter supplies power for laptops differs from that batteries do. The output current of a battery is direct current-clean and straight. The voltage in the battery need not be designed too high, considering 10.8V as adequate. It goes straightly to the transformation module of voltage which is not required to be high. The analog signals and digital signals in micro-electronics require the voltage of around 5V, divided by the efficiency and differential pressure. The result 10.8V will be enough. Electro move force of Li-ion batteries limits the output voltage of one cell in the rage of 3.6V. Many batteries are employing three cells and 10.8V becomes the popular voltage. Some nominal value weighs a bit more than integral multiple of 3.6V, take 3.7V and 11.2V as example on the purpose of protecting batteries.
The issues of laptop voltage, electricity power, power supply and load has been discussed and concerned a lot, as follows:
1.What is the meaning of nominal voltage and current?
2.In the electricity of the same nominal voltage, can different electricity be used on the same laptop?
3.Why is my laptop warmer than others when we are using the same machine?
4.What can I do since the nominal voltage of battery is much higher that of my laptop?
Firstly, the nominal voltage of AC adapter refers usually to the open circuit output voltage with no output current. Correspondently, it can be regarded as the upper limit of output voltage of the electricity. To the circumstance that the inner of the electricity has been inserted initiative voltage stabilization or voltage reference element, you can detect the nominal voltage with DC voltmeter with high internal resistance. even the electric supply is not stable, the output voltage is stable value. But with the cheap transformer on the market, take the one of personal stereo for example, made of traditional magnetic core transformer, four two-electrode valve rectifications plus a filtering capacitance. If DC voltage made with this material, the result detected will be greater than the nominal voltage.
Generally speaking, the real empty load voltage of average AC adapters is not totally identical with the nominal voltage, because the characteristic of electronic components are not totally the same and errors in small range from 0.1% to 5% are permitted. The smaller the error is, the higher consistency of electronic units is, the high cost it is and the more expensive it is.
The second one is the nominal current of electricity. Any power has a range of internal resistance. When the current is exported, it will cause pressure drop inside, equal to the current multiplied by the resistance. It also causes other two results. One is the heat is heat radiation, the other is voltage debasement. Having considered the heat radiation in the process of design, manufacture usually restricts the current in a range. When the current reaches this number, the output voltage slows down to 95% or other ratio of the nominal voltage. If the load of resistance is too low and the output current exceed the nominal electricity, two sequence will happen: first, single units radiation surpass the heat radiation capacity resulting in burning and damage the electricity; the other is the allowance of heat radiation, reflecting on the further reduction of output voltage, if too much, serving to fail the AC adapter.
The second question: labeled the same voltage but different current, can different adapters apply to the same laptop?
The principle lies in that adapters with greater current can replace small one. Some may misunderstand that electricity of high nominal current will burn out the laptop, seeing the name. actually, the current depends on the load, namely the operation condition of the laptop. When the laptop is operating in high speed, the current is high; when the laptop comes to standby, the current is smaller. More current allowance exists in AC adapters with higher nominal electricity, not productive of higher temperature or lower output voltage. On the contrary, if you place AC adapters of greater current with that of smaller current, it may result in some hazard. Once your laptop is linked to many external devices, for example, two USB hard disks, CPU operating in full speed, one base, one hard disk, and one charging battery, you had better consider whether the AC adapter is available to cook eggs. Therefore, users are suggested not to take place of AC adapter with that of smaller current.
The third question is simple. Do not doubt whether there is problem with your AC adapter. Take a look at what your laptop is doing?is CPU operating at high speed? Is the player playing music loudly? Is the brightness of your screen utmost? This time you may need an electricity management to take charge of the electricity supply.
As for the fourth question, the one who brings forth the question may be a layman. The way AC adapter supplies power for laptops differs from that batteries do. The output current of a battery is direct current-clean and straight. The voltage in the battery need not be designed too high, considering 10.8V as adequate. It goes straightly to the transformation module of voltage which is not required to be high. The analog signals and digital signals in micro-electronics require the voltage of around 5V, divided by the efficiency and differential pressure. The result 10.8V will be enough. Electro move force of Li-ion batteries limits the output voltage of one cell in the rage of 3.6V. Many batteries are employing three cells and 10.8V becomes the popular voltage. Some nominal value weighs a bit more than integral multiple of 3.6V, take 3.7V and 11.2V as example on the purpose of protecting batteries.
