RE: [OT] iPad query...

["Dave McLaughlin" <dave_mclaughlin@xxxxxxxxxxxxx>]

That's an interesting point. They may control the charging circuit
within
the iPad depending on if there is an actual USB connection there or not. I
have seen this with phones where the current draw and subsequent speed of
charging is less with USB than it is with the external power supply.

How good is your soldering?  :o)

You could make up a test lead with 2 USB cable by cutting and splicing one
together. This would be a quick and easy way to prove otherwise. I can
march
ahead with the PCB if this works. It would also allow you to measure the
current drawn by the iPad for each case.

If you don't have the ability, I wonder if someone else on the list could
offer to make this up or test it with their iPad. I only know one person
here with an iPad and he is currently in Dubai so I couldn't do the test.

Dave...
---
Very funny Scotty, now beam down my clothes!!!
---



From: ukha_d@xxxxxxx [mailto:ukha_d@xxxxxxx] On Behalf Of
Phil Harris
Sent: 17 March 2011 16:05
To: ukha_d@xxxxxxx
Subject: Re: [ukha_d] [OT] iPad query...


I guess what we ought to try is just the basic unit first to see if it
actually does charge the iPad whilst syncing or maybe Apple have added some
weird-ass funnies to prevent it? :-)

Phil

Sent from another bloody fruit-based portable device...

On 17 Mar 2011, at 04:44, "Dave McLaughlin"
<dave_mclaughlin@xxxxxxx
<mailto:dave_mclaughlin%40nerdshack.com>
> wrote:

> Actually, I agree with Kevin. I'll see if I can add some protection
for
> that. The issue is that the protection has to survive the 2A that your
> potential supply is going to provide and at 5V that's 10W to
dissipate.
> Maybe it is better to just have a USB port and at least then you will
know
> that the input is more likely to be at 5V.
>
> Good feedback guys. Keep it coming and I'll design this the way you
want
it.
>
> Dave...
> ---


[Non-text portions of this message have been removed]



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