0
votes
1answer
88 views

How can a power supply rated 7A be strong enough for two devices rated 5A? [closed]

I am not understanding something fundamental to amperage: Consider this adapter which outputs 12V 7A. It claims that several (eight, in this case) devices running at 12V 5A can draw enough power from ...
3
votes
2answers
214 views

Keeping a laptop power supply on without a laptop connected - any negative consequences?

Sometimes I unplug my Thinkpad laptop from its AC/DC power supply adapter and keep the adapter connected to the power socket. Are there any possible negative consequences? Some ideas I was thinking ...
0
votes
1answer
221 views

Laptop's power supply discharges the battery 10-20 seconds after unpluging from wall

Everyday after turning off the laptop (not before) I'm unplugging the power supply only from the wall, not from both wall and laptop. But it started to discharge the battery. After unplugging the ...
1
vote
3answers
5k views

Would this AC adapter work with this external HDD enclosure?

So I've lost the adapter that came with my external HDD enclosure, but I have a pile of AC adapters, most are under-powered. This one is the closest, but it seems like the enclosure needs a little ...
0
votes
1answer
516 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 ...
0
votes
5answers
3k views

How does a laptop wattage compare to that of a desktop computer when their AC Adapters don't even list wattage? [closed]

I have several laptops of various brands. Each has an AC adapter that's designed for the specific computer it came with. I also know there are universal adapters can adjust their voltages ...
2
votes
4answers
94 views

AC protection for laptop

I think there is something wrong at my apartment. Two weeks ago my girlfriend's AC adapter died and yesterday mine. Can I buy something to protect the AC adapters from whatever bad is coming from the ...
1
vote
3answers
3k views

Is it OK to use 17“ Macbook Pro AC adapter on a 13” Macbook Pro?

17" Magsafe Adapter: Input: 100-240V - 1.5A 50-60Hz Output: 16.5-18.5V - - - 4.6A Max 13" Magsafe Adapter Input: 100-240V - 1.5A 50-60Hz Output: 16.5V - - - 3.65A The Answer: I am looking ...
1
vote
2answers
1k views

Will my new laptop AC power adapter work with my laptop, given these specs?

My laptop's AC adapter went out last night and I bought a replacement today, but will not be able to test it until tonight or tomorrow. My laptop is a Gateway P7801-U, but unfortunately Gateway does ...
0
votes
4answers
11k 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 ...
4
votes
1answer
696 views

Replacement AC adapter for my CR-48?

I managed to lose the AC adapter on my Google CR-48. Yeah, already, I know. I have a couple more places to check, but does anyone know where I could find a compatible AC adapter? 19.5v 2.0a is not ...