Power Supply?

[Achileas7]

Hello everyone!

Newbie here, I am in search of a proper rasp3 power supply! As I already read in several topics and forums I need at least a 2.5 power supply. However those are not so common like standard 2a power supplies for Smartphones. So is it OK to use a power supply of this type http://www.ebay.com/itm/AC-110V-220V-TO ... Uasc4rRv6Q (link is just for reference)?

Any other ideas? At this point I am using a 2a power supply, the same I use for my Smartphone and have't any problem. However I am planning on using my Raspberry on a project so its placement is going to be fixed permantly, so it makes more sense to use a power supply like the one on the link!

[W. H. Heydt]

It depends on how many and what sort of USB peripherals you're going to connect to the Pi3B. I can run one with a keyboard, mouse and WD PiDrive with a 2A PSU. Bear in mind that cell phone and table chargers may not be able to deliver full current and keep the voltage within spec at the same time, and that can lead to serious problems, like corrupted SD cards.

So...here are a couple of PSUs that will do a fine job of powering a Pi3B:
From MCM Electronics, 5.25v 2.4A: http://www.mcmelectronics.com/product/28-19336
From Adafruit: 5.25v 2.4A: https://www.adafruit.com/products/1995

[bensimmo]

That looks fine to me, even the 2A version should be good.
It also has fine voltage adjustment so you can tweak it up to say 5.1/5.2V as is often the preferred voltage an then use decent wire and solder directly to the Pi on it's PP tabs (don't bother with uUSB) or via the GPIO.

[davidcoton]

solder directly to the Pi on it's PP tabs (don't bother with uUSB) or via the GPIO.

I disagree. Use the microUSB for power, it's what it is there for and keeps everything modular. You do need a good cable if it is detachable at the PSU end.

Don't use GPIO for power input unless you provide your own polyfuse. And if you use the test points, use PP1 or PP2 for the +5V -- other +5V test points bypass the polyfuse.

[bensimmo]

solder directly to the Pi on it's PP tabs (don't bother with uUSB) or via the GPIO.

I disagree. Use the microUSB for power, it's what it is there for and keeps everything modular. You do need a good cable if it is detachable at the PSU end.

Don't use GPIO for power input unless you provide your own polyfuse. And if you use the test points, use PP1 or PP2 for the +5V -- other +5V test points bypass the polyfuse.

It's going to be permanently fixed, so why bother with tiny usb connectors and cables. Solder straight on and be done with and extra connection, one less thing to go wrong and you gain the opertunity to make it more compact if that useful

But it was an option for the OP, that is all. (It should say 'so you don't need to bother with...' to be interpreted correctly I suppose)

Of course you could just buy the official PSU and know you are in good hands (it is made by Stontronics)

[davidcoton]

But it was an option for the OP, that is all. (It should say 'so you don't need to bother with...' to be interpreted correctly I suppose)

No problem! The Forum is meant to be a place of debate -- no one answer is guaranteed to be best for all readers in all circumstances.
"I disagree" is NOT the same as "You're wrong!" Sorry if it sounded too strong.