Will that damage my device?

[sydcal2011]

Hello all:

I have a device whose rating is 3V 0.5A. Is it ok to use a Power supply whose rating is 3V 1A to charge that?

thanks

 

[john monks]

If you have a device that requires 3 volts at 0.5 amps it is quite ok to use a power supply that puts out 3 volts up to 1 amp.
Exactly what do you have in mind?

 

[Harald Kapp]

This is a common misconception:
The power rating or amperage of the power supply only tells what it is capable to deliver. In this case: any current from 0 A up to 1 A.
It does not mean that the power supply forces a current of 1 A into the load.
As long as the load requires less cúrrent than the supply is able to deliver and the nominal voltages of load and supply are the same, everything is fine.

Harald