laptop AC Adaper

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Jan 10, 2004
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#1
laptop AC Adaper
I have a user that asked me a question. He is going to Japan is there any problems that he would have pluging his AC Adapter in Japan since its 120 here?

I would assume it would be fine?
 

kcnychief

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#2
I am pretty sure Japan would be 100v, so I'm not sure the 120v adapter would get enough juice to run.

What type of laptop is it?
 

Shamus MacNoob

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#3
Depending where you are in Japan, it can be 50 Hz or 60 Hz (the west and east of the country are different).

As for plugging in your laptop The adapter may be able to handle Japanese AC voltage; check the specs on the adapter.
The other issue is physically will the plug go in the outlet. And here the answer is, No! Japanese outlets take plugs with two, equal-sized,
flat prongs, unlike the round ones used in UK and Europe. So if your adapter can take Japanese AC, then you'll still need a prongs adapter; if your adapter cannot take Japanese AC, then you'll either need a
transformer or a different adapter
 

kcnychief

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#5
Well that would be 65w or 90w, where 90w is the adapter needed for a docking station and 65w works fine for the laptop outside of the dock.

I'm too dumb/lazy to convert that to volts :D
 
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#6
Well I guess he is going to china, my resources told me the wrong info. I know it will work there. Thanks for the help!
 

mlakrid

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#9
Depending where you are in Japan, it can be 50 Hz or 60 Hz (the west and east of the country are different).
Good advice but most digital devices have no worries for frequency anymore.. analog devices such as clocks had the most problems... most devices no longer even use the voltage for timing... so it should not be a significant issue anymore...

The adapter may be able to handle Japanese AC voltage; check the specs on the adapter.
The other issue is physically will the plug go in the outlet. ...So if your adapter can take Japanese AC, then you'll still need a prongs adapter; if your adapter cannot take Japanese AC, then you'll either need a
transformer or a different adapter
Another good point, but you can buy a "universal adapter" which has almost every single variation of plug at most major international airports anymore...

Also, the voltage can vari approx 20% and still work; the difference being the device would draw more amps to compensate for the lost power... example:using Ohms law: P=IxE in this case this equation would solve for your question: IxE=P

so:
Power divded by volts would = Amperage needed to power your device...
ensure your adapter is rated for that much of a draw (provided it will plug in as already stated) and you should be fine...

Mike A!
 
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