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Charger - 2.1A instead of 2A

Started by atodea, December 22, 2013, 11:24:28 pm

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atodea

Can I use a charger with more amps?
I'd like to use a phone charger with 2.1A 5V instead of 2A 5V.
To my knowledge, the device will take what it needs but I'm not an expert...

Thanks.

Jojo

Quote from: atodea on December 22, 2013, 11:24:28 pm
To my knowledge, the device will take what it needs but I'm not an expert...


Hello,

yes, thats right. Theoretically you could use a power supply with thousands of amps. But you should keep one thing in mind: all the current (amps) will go all across the whole board to the device, that needs the amps and that may destroy your board. Example: you plug in a USB device that is broken (short circuit). Than your charger will try to power the device and the charger will feed all his amps (lets say 10A) into the short circuit on the USB port. Than you will see some magic smoke and thats the end ;) .
Same scenario with the GPIOs. Thats why external components (like USB things...) are often powered externally.

But yes, you can of course use another 5V power supply :)

Greetings
Don't think that anyone will take more pains for his answer, as you took for your question.

atodea

Thank you very much for your reply and... happy holidays :)