Power supply switching for RPI

[crystal13]

Hi to all,

I'm new of Raspberry. I ordered it yesterday, but I don't have the power supply. I saw that it needs of 700mA and 5V. So, I want ask you if a power supply of 5V and 1A switching (the same of the mobile phone) is good for Raspberry.

Thank you,
Crystal

[rurwin]

Yes. The voltage has to be right, but the current only has to be large enough. The Pi will only take the current it needs.

I wrote a page about this: http://www.soronlin.org.uk/raspberrypi-power

[crystal13]

Ok thanks!

I have a power supply of my tablet galaxy tab 10.1 that is 5V/2A (with usb/micro_usb cable), I think it's perfect.

My doubt is only of the "switching" property of the power supply, that I don't know if it can be dangerous for the RPI (e.g. Arduino don't want switching power supply).

Can I go quiet?

[rurwin]

Switching is good. It will mean that the power supply is more efficient, and probably that it is better regulated.

Do you have a link for that comment about the Arduino? I've not heard of that before, and I can't think why it would be the case. There seem to be many people advocating switching power supplies for the Arduino.

[crystal13]

The discussion is here:
http://www.grix.it/forum/forum_thread.p ... 2&tbackto=

but it is in Italian language. Someone tells me that switching is good, someone tells me that is better a no switching. But, in the end, I'm using a PC power supply (12V with 4 diodes in series that becomes 9V) for Arduino, that is switching and I don't have problem.

[Mobius]

Switching supplies are better because they more consistently regulate the voltage from no-load to high load conditions. Generally, you can find a simple wall plug supply that will work. It should be rated at 5 volts with a minimum of 1000ma current capability. Do NOT use higher voltage supplies like you say you are with the Arduino.