Raspberry Pi Forums

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

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

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?

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.

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.

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.