At 9:48 PM +1100 1/20/05, Ben Dyer wrote:
The power rating simply indicates how much current the adapter can supply without burning out. Using a higher-rated power supply is fine; if anything, it will lead to fewer adapter heat problems.
Just to add this, with some power adapters using one of the correct voltage but excess current CAN cause a problem. That is because the voltage isn't regulated and if you don't load it enough the voltage is actually quite a bit above the rated value. Depending on the load, this could do some damage. This DOESN'T apply with the these Apple power adapters as they are regulated.
As is virtually ANY "laptop adapter".... as they are switching supplies. The simple "wallwarts" that sell wholesale for $1-2 each are not. There, the above is true to some extent.
Anytime the 'adapter' is: a) Dual voltage in ["120-240v'"] and/or b) greater than 30 watts out c) in a flat skinny case; it's bound to be a switching supply & regulated.
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