RE: [OT] iPad query...

[Paul Gordon <paul_gordon@xxxxxxxxxxx>]

For some reason, I thought that "was" the case... - i.e.
that iPad/Pod/Phone
devices' charging ports aren't just "dumb" power-in sockets...
but that they
negotiate with the charging device to agree the charging current between
them... - which is why many docks cause the iDevice to display a message to
the effect of "Charging is not supported with this accessory"...

I have a number of cheap iPod docks which exhibit exactly this behaviour...
- seemingly the device *does* charge, even though the iDevice says it
wont...

Food for thought...

Paul G.

-----Original Message-----
From: ukha_d@xxxxxxx [mailto:ukha_d@xxxxxxx] On Behalf Of
Phil Harris
Sent: 17 March 2011 09:05
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>
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...
> ---
> Very funny Scotty, now beam down my clothes!!!
> ---
>
>
>
> From: ukha_d@xxxxxxx [mailto:ukha_d@xxxxxxx] On Behalf Of
> Phillip Harris
> Sent: 17 March 2011 07:44
> To: ukha_d@xxxxxxx
> Subject: Re: [ukha_d] [OT] iPad query...
>
>
> Sounds about par for the course with anything though - stuff the wrong
> tranny up it and byebye. Solution - don't stick a wrong tranny up it.
:-D
>
> Phil
>
> On 16 Mar 2011, at 23:58, Kevin Hawkins wrote:
>
>> I haven't been following this thread but it seems if you include a
DC
>> jack allowing direct voltage application to the USB lines that it
>> potentially could damage a lot of kit if the wrong voltage (PSU)
was
>> used ... or is there some protection somewhere ?
>>
>> K
>
>
>
>
> [Non-text portions of this message have been removed]
>
>
>
> ------------------------------------
>
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