Ac adapter laptop.with the dramatic increase in notebook users, as an important accessory for notebooks, the heat of notebook adapters has also increased.In view of the importance of the adapter to the notebook: light power, short circuit, automatic shutdown, black screen, explosion, burning motherboard, we should choose carefully when choosing the adapter for the notebook.
What kind of adapter is good ?
Since the adapter’s manufacturing specifications and standards are not currently available, so the adapter’s “aesthetic” has not yet formed a specific standard, from the size of the volume, different styles of plugs can be seen.
Notebook adapter stability and PC power is very similar, mainly reflected in overcurrent protection (OCP), EMI radiation, voltage deviation, ripple suppression, cross load, timing, dynamic testing and so on, the performance of these projects will feel the adapter can be stable operation for a long time.
- Energy saving
Energy-saving, conversion efficiency naturally the first, after all, The notebook is also low-voltage direct current, must pass the conversion to do; In addition, it is also important, that is No-load loss, the professional terminology is called: No load power loss. No-load damage refers to the power loss of the adapter when the laptop is in standby condition.
The notebook itself is an unparalleled portability in the competition with the desktop PC’s share of the race to take the lead, in this case can not tolerate the small adapter pull hind legs. The survey index of portability is generally: measurements volume, weight.
For any product, durability is a big measure, but because of the special nature of the adapter, its durability is even more important. The special thing is that it is necessary to take it often, it will inevitably bump, and the wire can often be folded, which determines its aging speed relatively faster, short service life.
- Surface temperature
The surface temperature affects the user experience. I believe many users have experienced this experience, after using the notebook, found that the adapter surface temperature is very high, which indicates that the adapter quality is not high, or has been aging situation.
The noise of the laptop adapter is very small, after all, the adapter is a passive cooling power supply, its noise is mainly from the internal current fluctuations, a squeaking sound.
Compatibility is also important for notebook adapters.There is no unified interface standard for notebook adapters. Therefore, the adapters on the market can be said to be ever-changing in terms of interfaces. If you don’t pay more attention, it is possible that the adapters and notebooks that are bought back do not match.
The quality of its useful materials will be directly reflected in the above standards. For example, if the materials are used, the conversion efficiency may be low, the surface temperature will be high, etc…
The adapter’s radar chart provides an overall picture of the overall strength and related features of the power supply.
For the user, the stability and security of the adapter bear the brunt, so we give the highest score of 4 points; portability and durability are determined by the characteristics of the adapter, while energy saving is not direct enough for the user experience, but low carbon Society, energy conservation is the first, so we have given 3 points for these 3 items, and we pay attention to it.
The surface temperature of the adapter has a relatively small impact on the user, but given that the temperature will be an indirect manifestation of the product and durability, we gave a score of 2 points. Finally, the noise value of the notebook adapter is generally very small, and its noise can be reflected to some extent as long as it has internal current fluctuations, so we set the full score of the item to 1 point.
2018 Notebook Power ac adapter leaderboard
1.HP 90W AC Adapter PPP012H-S for HP
- Applicable: HP 531s,cq45
2.Oneda Apple A1435 A1436 A1465 A1466 Laptop power Adapter
- Applicable:Apple A1435、A1436、A1465、A1466、MD223、MD224
3.Apple 29W USB-C power Adapter
- Applicable:iPhone X, iPhone 8, iPhone 8 Plus.Compatible with 12-inch macbook computer
4.ThinkPad 0B47007 0B47008 0B47009 Power Supply AC Adapter
- 20V 4.5 A, 90W
- Applicable: 45N0248,45N0250,45N0234,45N0236, 45N0238,45N0240,45N0242,45N0244, 45N0246,45N0252,36200254, 36200252, ADLX90NCC3A, ADLX90NDC3A, PA-1900-72, Lenovo IBM Thinkpad X1 Carbon Series
5.Dell 19.5V 4.62A 90W AC Adapter
- 19.5V 4.62A 90W
- Dell Part Number: Y808G, Y807G, D094H, C120H, DA90PE1-00, 330-1825, 330-1826, 330-1827, 330-1828, PA-3E, PA-3E Family, PA-2E, PA-1900-01D3, PA-1900-02D, PA-1900-02D2, PA-1900-02D3, WK890, NN236, ONN236.
Causes of damage to laptop power adapter
- Switch Tube QL breakdown
- KA3842 damage
- Schottky diode 02 Breakdown
- Photoelectric coupling damage
- TL431 damage
- Rectifier Bridge heap D2 Breakdown