Where to get a good PSU from


34 posts   Page 2 of 2   1, 2
by adlambert » Sun Jun 03, 2012 2:11 pm
I've got three powersupplies that I am using on 2 Raspberry Pis, depending where I am. All of them are rock solid so I will offer them as possibilites (available in the UK for UK 3 pin).

The best one is the Masterplug with 2 USB sockets 1Amp, it has some form of surge protection in and is the one I use for my permanently online Pi. It doesn't occupy a socket as it can be stacked. I got mine from Sainsburys for £5 when it was on promotion, but they are £10 here:

http://www.screwfix.com/p/masterplug-su ... lack/28341


Then another Masterplug one, simpler in design with single USB and has been solid for me, with Keyboard, Optical Mouse, network (ethernet), HDMI and occaisionally with WiFi in the USB (£6.99):

http://www.screwfix.com/p/masterplug-us ... lack/45307


The last one, I got last week from Wilkinson for £6.50 and I am delighted with it. £6.50, 1Amp, single USB and it again has been rock solid.
Can't find it on the Wilkinson website, but it is branded "Groov>>E".
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by The_Saint » Sun Jun 03, 2012 2:21 pm
Thanks.
I have had an email from the seller of the charger I referred to above telling me that I am using the wrong kind of Micro USB cable and should be using one rated for high-speed charging. I replied that I omitted to say that I tried two different cables and they were both fine measured with a voltmeter as described above used with the USB out rated at 800 mA.on the el-cheapo charger I had free with some batteries.
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by adlambert » Sun Jun 03, 2012 3:36 pm
Yes, when choosing a cable, as a rule of thumb, thicker is better. Like jump leads.
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by The_Saint » Sun Jun 03, 2012 6:55 pm
I have taken up the offer from the supplier (above) of a specific cable that will deliver the power the unit is rated at.
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by emdahlb » Mon Jun 04, 2012 4:43 am
I tried for many hours to get my R-Pi to operate the HP wireless keyboard and mouse and an ethernet cable at the same time. I either locked up, or one or the other worked, but not both. I had been using a Blackberry charger rated at 5V and 750 mah. I finally gave up and used an old powered USB hub, and success! I also could use only one of the onboard R-Pi USB ports at a time when using the Blackberry charger. I don't know if the charger was bad(it should have had enough power), but I won't waste anymore time on it.
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by billio » Mon Jun 04, 2012 11:47 am
Initially I used a USB charger for a Kodak video camera (Z3 I think) - it worked fine as it supplies 1 amp.

But then I realised I needed more USB ports so I bought a Belkin powered 4-port USB splitter box. This supplies 2 amps so I have a power cable from the box to the RPi and a USB data cable from the RPi to the box. It seems to work fine with a Tesco Value keyboard and an old Belkin retractable mini mouse.
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by stephencbingham » Mon Jun 04, 2012 5:25 pm
http://www.ebay.co.uk/itm/310373885120? ... 2258wt_905

This works well for me, £5.49 & then a lashed out on a £1.09 usb lead.

K/b & mouse worked directly off the Pi but I prefer using a powered hub:

http://www.ebay.co.uk/itm/220785972323? ... 1531wt_968 only £3.99

Not sure why many people want to scrimp on PSUs when they are fundamental to it working..
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by mbrampton » Sat Mar 30, 2013 6:07 pm
I also bought the PortaPow dual USB charger from Amazon for use with Raspberry Pi. And I also have found it does not work. The fault is not in the cable. The Raspberry Pi was running faultlessly with a good quality PSU and cable from ModMyPi. I changed the plugin in charger unit for the PortaPow unit, leaving the same cable in place, and the Raspberry Pi would not run properly. Restoring the original PSU caused it to work again.

Although the spec for PortaPow suggests that it would be ideal for running two Raspberry Pis (my intention) in fact it doesn't even seem capable of running one. Disappointing.
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by sej7278 » Sat Mar 30, 2013 7:56 pm
i just received this 1.5A one from ebay which works with my logitech wireless keyboard and mouse. you can get it slightly cheaper (£5.25?) without the cable if you have one.

i noticed that a couple of powered hubs and indeed this psu didn't work with a specific micros usb cable i've got, so it seems not all cables are equal!
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