Amperage ratings on DC power supplies

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Discussion Overview

The discussion centers around the suitability of using a DC power supply with a higher amperage rating than the original power supply for a router. Participants explore the implications of using a 1.25 A supply instead of the rated 1.0 A, considering safety and potential issues related to the router's performance.

Discussion Character

  • Exploratory, Technical explanation, Debate/contested

Main Points Raised

  • Kerry questions whether using a 1.25 A power supply is safe for a router that originally used a 1.0 A supply, considering the router's specifications.
  • Some participants suggest that a higher amperage rating is acceptable and may even allow the power supply to run cooler.
  • Another participant raises the possibility that the router itself may have issues if the original power supply failed, indicating that the problem might not be resolved by simply replacing the power supply.
  • Kerry confirms that the router's specifications indicate a requirement of 12V, 1.0A, and expresses willingness to try the new power supply.

Areas of Agreement / Disagreement

Participants generally agree that using a power supply with a higher amperage rating is likely safe, but there is disagreement regarding whether the router may have underlying issues that could affect its operation.

Contextual Notes

There are unresolved questions about the router's condition and whether the failure of the original power supply was due to the router drawing too much current or other issues.

Who May Find This Useful

Individuals troubleshooting power supply issues for electronic devices, particularly those with similar specifications and concerns about amperage ratings.

KLoux
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Hello,

I'm hoping that by asking this question I can save myself a couple of bucks. I have a DC power supply for a router that is rated for 1.0 A. My router stopped working, and I traced the problem to the power supply. It's a 12 V supply putting out 0.1 V. I have other 12 V supplies, but the closet I can get on the amperage is 1.25 A. My thinking is that the router probably won't draw more than 1.0 A anyway, so a 1.25 A power supply would still be OK. Is this safe? Is there anything else that I'm not considering (what ifs?) What I don't want to do is fry the router and have to spend $70 instead of ~$10 for a new power supply.

Thanks,

Kerry
 
Engineering news on Phys.org
What is your router specs? If it draws 1 amp then that is probably why the power supply got fried. With a 1.25 amp rateing, you're good to go. With the extra rateing, the supply will run cooler.
 
It was the power supply that came with the router, and the router has 12V, 1.0A printed on it, too.

Thanks for the help, I'll give it a shot!

-Kerry
 
did you measure the supply unconnected to the router?
If not your router may have some problem, this seems like a loading issue.
So another supply won't help.
 

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