Author Topic: Too Many Amps?  (Read 456 times)

0 Members and 1 Guest are viewing this topic.

Offline Rickyroller5

  • Newbie
  • Posts: 1
  • Country: us
Too Many Amps?
« on: August 23, 2019, 02:02:30 pm »
I have a Lepai audio amplifier that requires a 5V, 2A  DC input "wall-wart."
Can I use a 5V, 3A unit without damaging the amplifier?
 

Offline Kleinstein

  • Super Contributor
  • ***
  • Posts: 6764
  • Country: de
Re: Too Many Amps?
« Reply #1 on: August 23, 2019, 05:09:05 pm »
The input specs of appliances is usually the maximum current they use, or the minimum current the power supply should be able to deliver. So the power supply should be at least 2 A, a more powerful supply is not a problem. A 3 A supply is absolutely fine.
I would just be careful if more than some 20 A, if there is no suitable fuse in the supply. It would not damage the amplifier, but a short at the cables from the supply could cause a mess.
 
The following users thanked this post: NiHaoMike

Offline David Hess

  • Super Contributor
  • ***
  • Posts: 10460
  • Country: us
  • DavidH
Re: Too Many Amps?
« Reply #2 on: August 23, 2019, 05:25:23 pm »
I have a Lepai audio amplifier that requires a 5V, 2A  DC input "wall-wart."
Can I use a 5V, 3A unit without damaging the amplifier?

Yes, the current rating represents the maximum available current but the load will only draw the necessary current.
 

Offline john61ct

  • Regular Contributor
  • *
  • Posts: 81
  • Country: us
Re: Too Many Amps?
« Reply #3 on: August 23, 2019, 09:57:05 pm »
Yes, 300A or 3000A doesn't matter.

More is fine, less is not.
 


Share me

Digg  Facebook  SlashDot  Delicious  Technorati  Twitter  Google  Yahoo
Smf