Netbook AC adapter question

Hello geeks! :-D

I just got a new netbook. However, the AC adapter that came with it is one of those 3 prongers (has the ground prong as well as the two flat prongs). This is not so good here in Japan where pretty much all sockets are for 2 prongs. Now, I have an old AC adapter from my old Gateway notebook (9 years old) and I'd like to use it since it is a regular two prong adapter.

Here are the voltages for the adapters:

New netbook adapter -- Input->100-240V~1.2A Output->19V===1.58A
Old notebook adapter -- Input->100-240V~1.5A Output->19V===2.64A

The old AC adapter power plug does fit into the netbook power outlet. But the input and output numbers seem to be a bit higher than the netbook adapter. If I use this will it fry my netbook?

I have an little 3-prong mini-adapter somewhere, but I have to find it. I'd be much happier, though, to just use the old notebook AC adapter instead. Can that happen?

Thanks for your help!

 

Of the information you provided, the 19V is the key value. Since the battery will draw what it needs, the higher amperage should not be a problem.

HOWEVER, we are missing critical information and until that can be determined, do NOT use any power adapter other than the one that came with your netbook. Just having the right plug and the "potential" value (the 19V) is not enough to ensure all is okay.

Missing information includes the current type. Is that 19V output AC or DC? Plugging in the wrong current will likely destroy the netbook or supply, or both. All a transformer does is "step down" or "step up" voltage. Only some power blocks include rectifier circuits to convert the AC from the wall to a DC output - as determined by the device makers, based on the internal power requirements of the device.

If the netbook's power supply provides an AC voltage, so must the other power supply. If the output of the netbook's power supply is DC, then you MUST know the polarity of the output voltage, and how the connector is wired. There is a 38 volt "difference of potential" between -19VDC and +19VDC. So you must determine which pin/wire is positive, and which is negative and ENSURE both supplies are wired exactly the same way. Most power blocks have that information stamped or printed on the block - often with a diagram or iconic representation of the connector. You need to compare the two blocks carefully.

Rather than take the risk, my advice is to use a wall outlet adapter to change the pin configuration so you can use the power supply designed for that netbook.