🚀 go-pugleaf

In article <4f5a0371.3990093843@news.kpn.nl>, nico@puntnl.niks says...
> 
> Paul <paul@pcserviceselectronics.co.uk> wrote:
> 
> >In article <4f597914$1@dnews.tpgi.com.au>, keith@nowhere.com.au says...
> >> 
> >> On 9/03/2012 8:54 AM, Paul wrote:
> >> > In article<4f59230c$1@dnews.tpgi.com.au>, keith@nowhere.com.au says...
> >> >>
> >> >> On 9/03/2012 3:00 AM, Paul wrote:
> >> >>> In article<9rqf87FadnU1@mid.individual.net>, 5V@2.5A says...
> >> >>>>
> >> >>>> On 08-Mar-12 11:51 AM, Nico Coesel wrote:
> >> >>>>> Don McKenzie<5V@2.5A>    wrote:
> >> >>>>>
> >> >>>>>> On 08-Mar-12 10:23 AM, Paul wrote:
> >> >>>>>>
> >> 
> >> Most USB wall warts are of the universal voltage type, you just buy a 
> >> cheap adaptor. I even have one that came with slip in connectors that 
> >> cover 90% of the power sockets in use in the world.
> >
> >Reality is especially in classrooms budgets are tight so 20 to 30 of 
> >these is not prctical causes problems of time wasted, making sure all
> >bits are together at beginning and returned at end of class, let alone
> >whose got a dodgy one to debug.
> 
> Thats true. I don't think the RP is very suitable for use in a
> classroom. Its too fragile.
> 
> >How many wall warts and the USB cables are speced for 5V @ 700mA.
> 
> How many are not? Most are rated 1A and 2A is on its way.

The mahority of USB wall warts people have are for phones in the 100 to
3000mA range to keep costs and weight down.

USB Wall warts initially inteneded for particular pseudo USB devices
can be anything and most rely on being able to grab 100mA easily
from any USB port, so the wall wart replicates that. 

-- 
Paul Carpenter          | paul@pcserviceselectronics.co.uk
<http://www.pcserviceselectronics.co.uk/>    PC Services
<http://www.pcserviceselectronics.co.uk/fonts/> Timing Diagram Font
<http://www.gnuh8.org.uk/>  GNU H8 - compiler & Renesas H8/H8S/H8 Tiny
<http://www.badweb.org.uk/> For those web sites you hate