Solved Tp-Link router power adapter quiz: more voltage = more range

Toshiba Satellite c655-s5082 laptop
September 12, 2015 at 21:25:10
Specs: Windows 7Ultimate (64 bits), Intel Core i3-2350M (2.3GHz) / Kingston 2x2gb DDR3
Hi people, I have at home a router Tp-Link MR3420 v1, in the box it says a 12v-1a power supply must be plugged, but I dont have one so I plug a 9v-600ma adapter, the signal is weak at some places in home, do you think the voltage is the cause? maybe if I get a 12v-1a adapter the signal could be stronger?

Or a 15v-2a one? :P

Thanks in advance!

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September 12, 2015 at 23:25:07
✔ Best Answer
The 9 volt power supply pushing 600 ma is probably straining to provide the power the router needs and quite possibly is a reason for your weak signals. You won't know for sure until you get the right one.

A circuit will pull the amperage it needs and amp ratings should be considered a maximum the power unit is able to provide. For example your router may need 800 ma under full load but the manufacturer is going to spec something higher just to make sure. So you could use a higher amp-rated power supply since the router will only take what it needs.

That's different than the rated voltage. Voltage will be forced on the unit and while there may be some over-voltage protection and some built in tolerance for slightly lower or higher voltages you really don't want to vary the voltage much from what the manufacturer says it needs.

So if the manufacturer recommends a 12 volt, 1 amp input you could use a 12 volt, 2 amp power supply with no problem but don't use a 15 volt one.

Oh, and if you're randomly plugging in various power supplies you need to make sure the polarity (+/- orientation) is correct.

message edited by DAVEINCAPS

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September 13, 2015 at 00:50:45
Use a 12volt (psu) power supply unit, and at least 1amp, as per TP specs. A psu providing more than 1 amp will be fine, but again 12 volt.

I'm surprised the router performs at all with onlly 9 volts applied.

edited per trvlr to correct a typo

message edited by trvlr

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September 13, 2015 at 11:45:12
As trvlr said, the PSU should be 12v with minimum of 1A. You may safely exceed amperage but do NOT exceed voltage.

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