Questions tagged [ac-adapter]

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14 votes
13 answers
88k views

Laptop touchpad response badly when on power supply?

I have HP pavilion 2200 series laptop with AMD processor, 1GB RAM, on board nvidia display card. It suddenly cause following problem: When the adapter is unplugged, the touchpad works correctly and ...
Niranjan Singh's user avatar
4 votes
1 answer
19k views

Is it safe to use a laptop AC adapter with 220V power if the AC cable is not rated for 220V?

The AC adapter supplied with my laptop is designed to accept voltage in the range of 100-240VAC at 50-60Hz, but the AC cable that plugs into the adapter unit itself is only rated to 125VAC 7.5A 2.5A. ...
bwDraco's user avatar
  • 46.1k
4 votes
1 answer
2k views

Is it safe to use a "Universal Laptop Adapter"?

I have seen a "Universal Laptop Adapter" sold in a computer shop before. I am thinking of getting one for a laptop. Is it safe to use? What differences are there between one of these and a typical ...
Jiew Meng's user avatar
  • 1,355
3 votes
5 answers
89k views

How to test AC adapter?

I have a Toshiba laptop that is no longer receiving power when it's plugged in. How can I tell if problem is in the AC adapter or in the actual laptop? I could buy a replacement adapter (this is the ...
noctonura's user avatar
  • 133
1 vote
1 answer
1k views

charging laptop with a different adapter charger [duplicate]

Possible Duplicate: charging laptop with a different manufacturer's charger I have lost this adapter, Output Voltage: 19V Output Current: 3.95A Input Voltage: 100-240V Wattage : 75W Pin Size:...
Jhickson's user avatar
0 votes
2 answers
3k views

Laptop battery holds charge, but won't charge any more

Ok, I'm sure I will need to replace either my battery or my AC adapter, but would rather not buy one if the other is the problem. My problem is. I have a Sager laptop that gets quite a bit of use. ...
Jeff F.'s user avatar
  • 4,413