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Using linksys router with a different power adapter

post #1 of 7
Thread Starter 
Dont ask why...
Will it harm plugging a router with a power adapter which is 12v 1A instead of its original 12v 0.5A?
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post #2 of 7

It might. That's a difference of 6W (12 x 1 vs. 12 x 0.5). I'm not sure, but I think that it will try to feed it 12W instead of the 6W of the original.

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post #3 of 7
Nah. Voltage is the one you want to watch for. Devices will pull whatever amount of current that they will. If there's not enough then it won't work, but if the pool is at least large enough then the adapter will be able to provide the amount of power the device needs.
post #4 of 7
Had to do this on my linksys wrt54g using a wallwart for an ISP westell dsl modem. Voltage was the same but the amps were .5 off IIRC. Been working fine for over a year now.
 
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post #5 of 7
The amp rating is only the "maximum" that your particular adapter can handle (without the voltage dropping - but that's a different story.)

It doesn't matter which adapter you use; your device (router) is going to "demand" the same amount of current (amps) from any adapter that's rated at 12V. It doesn't matter if you have a 12V @100A power adapter. That would just mean that the adapter *could* supply 100A if it had to, but your router is never going to do that, obviously.

A bigger concern would be if the amperage rating were too low. In that case, your voltage would drop below 12V, and your device would not work.
post #6 of 7
    beers and The Hundred Gunner have their electronics right (for a power supply, output voltage must match, current is fine as long as it is equal or higher than the original).

    Let me add one thing though: Not all power adapters have the same polarity, even if the output plug is the correct size.  Most DC powered devices and most DC power adapters have a symbol somewhere that shows whether + is in the center (tip) and – is on the outside (ring), or vice versa.  If the adapter's polarity is wrong, something will probably blow as soon as you connect it to the wall and to the device.
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post #7 of 7
And make sure if the original was DC, that your new one is also DC. There are AC power adapters that are rated at 12V, so just make sure you're using the same thing.
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