Hi, i will be travelling internationally and just wanted to find out
which adapter would be compatible with the airline power system. I will
be taking a Delta flight Boeing 777-200. As per seatguru.com all seats
do have inseat power but can't seem to find out for certain which
adapter would be compatible. Delta uses the Empower system. I am
looking at a couple of targus adapters however am not sure if I should
get the 75W or the 90W. Is there a difference on the plane? Would the
90W adapter work if the Delta power system is only 75W? thx

<netkid12******.com> wrote in message
news:1162851896.492010.281670@k70g2000cwa.googlegr oups.com...
> Hi, i will be travelling internationally and just wanted to find out
> which adapter would be compatible with the airline power system. I will
> be taking a Delta flight Boeing 777-200. As per seatguru.com all seats
> do have inseat power but can't seem to find out for certain which
> adapter would be compatible. Delta uses the Empower system. I am
> looking at a couple of targus adapters however am not sure if I should
> get the 75W or the 90W. Is there a difference on the plane? Would the
> 90W adapter work if the Delta power system is only 75W? thx

If the adapter fits then it wouldn't matter. Watts is the result of the
voltage available and the current that your laptop draws.

The power rating is a max, not necessarily what it will draw. You will
only draw the power that you need. So get the 90w adapter unless there
is a huge price difference. [to use less power, don't actually use the
laptop and charge the battery at the same time]. The worst case
scenario is that you blow a fuse in the seat power socket.


netkid12******.com wrote:
> Hi, i will be travelling internationally and just wanted to find out
> which adapter would be compatible with the airline power system. I will
> be taking a Delta flight Boeing 777-200. As per seatguru.com all seats
> do have inseat power but can't seem to find out for certain which
> adapter would be compatible. Delta uses the Empower system. I am
> looking at a couple of targus adapters however am not sure if I should
> get the 75W or the 90W. Is there a difference on the plane? Would the
> 90W adapter work if the Delta power system is only 75W? thx
>

Barry Watzman wrote:
>
> The power rating is a max, not necessarily what it will draw. You will
> only draw the power that you need. So get the 90w adapter unless there
> is a huge price difference. [to use less power, don't actually use the
> laptop and charge the battery at the same time]. The worst case
> scenario is that you blow a fuse in the seat power socket.
>
> <snip>

Where is the fuse/breaker located?

The cockpit? The cabin?

Just curious!

Notan

"Notan" <notan@ddress.thatcanbespammed> wrote in message
news:454FCBDD.E34D7DFC@ddress.thatcanbespammed...
> Barry Watzman wrote:
>>
>> The power rating is a max, not necessarily what it will draw. You will
>> only draw the power that you need. So get the 90w adapter unless there
>> is a huge price difference. [to use less power, don't actually use the
>> laptop and charge the battery at the same time]. The worst case
>> scenario is that you blow a fuse in the seat power socket.
>>
>> <snip>
>
> Where is the fuse/breaker located?
>
> The cockpit? The cabin?
>
> Just curious!
>
> Notan

If you smell something bad under you seat it means you're drawing too much power.

Adam

Don't know; probably there is one in each seat itself. It might be a
self-resetting circuit breaker.

Notan wrote:
> Barry Watzman wrote:
>> The power rating is a max, not necessarily what it will draw. You will
>> only draw the power that you need. So get the 90w adapter unless there
>> is a huge price difference. [to use less power, don't actually use the
>> laptop and charge the battery at the same time]. The worst case
>> scenario is that you blow a fuse in the seat power socket.
>>
>> <snip>
>
> Where is the fuse/breaker located?
>
> The cockpit? The cabin?
>
> Just curious!
>
> Notan

Adam Helberg wrote:
>
> "Notan" <notan@ddress.thatcanbespammed> wrote in message
> news:454FCBDD.E34D7DFC@ddress.thatcanbespammed...
> > Barry Watzman wrote:
> >>
> >> The power rating is a max, not necessarily what it will draw. You will
> >> only draw the power that you need. So get the 90w adapter unless there
> >> is a huge price difference. [to use less power, don't actually use the
> >> laptop and charge the battery at the same time]. The worst case
> >> scenario is that you blow a fuse in the seat power socket.
> >>
> >> <snip>
> >
> > Where is the fuse/breaker located?
> >
> > The cockpit? The cabin?
> >
> > Just curious!
> >
> > Notan
>
> If you smell something bad under you seat it means you're drawing too much power.

I always wrote that off to bad burritos, just before the flight! <g>

Notan

Notan wrote:
> Adam Helberg wrote:
>> "Notan" <notan@ddress.thatcanbespammed> wrote in message
>> news:454FCBDD.E34D7DFC@ddress.thatcanbespammed...
>>> Barry Watzman wrote:
>>>> The power rating is a max, not necessarily what it will draw. You will
>>>> only draw the power that you need. So get the 90w adapter unless there
>>>> is a huge price difference. [to use less power, don't actually use the
>>>> laptop and charge the battery at the same time]. The worst case
>>>> scenario is that you blow a fuse in the seat power socket.
>>>>
>>>> <snip>
>>> Where is the fuse/breaker located?
>>>
>>> The cockpit? The cabin?
>>>
>>> Just curious!
>>>
>>> Notan
>> If you smell something bad under you seat it means you're drawing too much power.
>
> I always wrote that off to bad burritos, just before the flight! <g>
>
> Notan
Either you are very optimistic, or you are travelling First/Business.
The problem is not, assuming it is here, the inseat power, but the angle
the fellow seating in front of you can recline. As for the smell that
could come from under your seat, burritos might be a cause, but not
limited to ... :)

--
John Doue

Barry Watzman wrote:

> is a huge price difference. [to use less power, don't actually use the
> laptop and charge the battery at the same time]. The worst case

It is forbidden to charge the battery on an aircraft. Airline adapters
are supposed to be sensed by the computer.

An example (from an iBook technical ref manual): "The iBook can operate
from a 15-volt power outlet on an airliner, however for safety reasons
the computer will not allowbattery charging. In order for the computer
to detect the connection to airline power, the airline power cable
(available separately) should have a sense resistor of 24.3K ohms
connected between the power plug's shell and ground."

zwsdotcom******.com wrote:
> In order for the computer
> to detect the connection to airline power, the airline power cable
> (available separately) should have a sense resistor of 24.3K ohms
> connected between the power plug's shell and ground."
>

Thats a pretty long ground wire <g>

Ian Singer

--


================================================== =======================
See my homepage at http://www.iansinger.com
hosted on http://www.1and1.com/?k_id=10623894
All genealogy is stored in TMG from http://www.whollygenes.com
Charts and searching using TNG from http://www.tngsitebuilding.com
I am near Toronto Canada, can I tell where you are from your reply?
================================================== =======================

<zwsdotcom******.com> wrote in message
news:1162916121.212773.323860@i42g2000cwa.googlegr oups.com
> Barry Watzman wrote:
>
>> is a huge price difference. [to use less power, don't actually use
>> the laptop and charge the battery at the same time]. The worst case
>
> It is forbidden to charge the battery on an aircraft. Airline adapters
> are supposed to be sensed by the computer.
>
> An example (from an iBook technical ref manual): "The iBook can
> operate from a 15-volt power outlet on an airliner, however for
> safety reasons the computer will not allowbattery charging. In order
> for the computer to detect the connection to airline power, the
> airline power cable (available separately) should have a sense
> resistor of 24.3K ohms connected between the power plug's shell and
> ground."

Wow I didn't know this! I googled this and found this among others:

http://www.seatguru.com/articles/in-...ptop_power.php

--
Bill

That ("It is forbidden to charge the battery on an aircraft") is just
bull****. At least in the US. Many power adapters are generic, the
computer doesn't know what it's being powered from, and there are no
regulations against charging batteries.


zwsdotcom******.com wrote:
> Barry Watzman wrote:
>
>> is a huge price difference. [to use less power, don't actually use the
>> laptop and charge the battery at the same time]. The worst case
>
> It is forbidden to charge the battery on an aircraft. Airline adapters
> are supposed to be sensed by the computer.
>
> An example (from an iBook technical ref manual): "The iBook can operate
> from a 15-volt power outlet on an airliner, however for safety reasons
> the computer will not allowbattery charging. In order for the computer
> to detect the connection to airline power, the airline power cable
> (available separately) should have a sense resistor of 24.3K ohms
> connected between the power plug's shell and ground."
>

Apple may implement that on their own products (perhaps for fear of
liability), but it is absolutely not true that it is forbidden to charge
a battery, nor, in general, is there any way for most laptops .... that
have only a 2-wire interface to the power adapter .... to even know that
they are running on an aircraft. And since Fellowes, Targus and others
make "generic" Auto/Air adapters that also don't know what computer they
are being used with, it's just not a widely implemented practice.

An argument can be made that perhaps it should be, but on the other
hand, keep in mind that the Sony batteries that were going incindary and
were the cause of all of the recalls were doing so even when not being
charged, even when removed from the laptop and just sitting passively
without even being installed.


BillW50 wrote:
> <zwsdotcom******.com> wrote in message
> news:1162916121.212773.323860@i42g2000cwa.googlegr oups.com
>> Barry Watzman wrote:
>>
>>> is a huge price difference. [to use less power, don't actually use
>>> the laptop and charge the battery at the same time]. The worst case
>>
>> It is forbidden to charge the battery on an aircraft. Airline adapters
>> are supposed to be sensed by the computer.
>>
>> An example (from an iBook technical ref manual): "The iBook can
>> operate from a 15-volt power outlet on an airliner, however for
>> safety reasons the computer will not allowbattery charging. In order
>> for the computer to detect the connection to airline power, the
>> airline power cable (available separately) should have a sense
>> resistor of 24.3K ohms connected between the power plug's shell and
>> ground."
>
> Wow I didn't know this! I googled this and found this among others:
>
> http://www.seatguru.com/articles/in-...ptop_power.php
>

"Barry Watzman" <WatzmanNOSPAM@neo.rr.com> wrote in message
news:4550F744.30509@neo.rr.com
> That ("It is forbidden to charge the battery on an aircraft") is just
> bull****. At least in the US. Many power adapters are generic, the
> computer doesn't know what it's being powered from, and there are no
> regulations against charging batteries.

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Q: Will my battery charge while I'm plugged in?

A: Don't count on it. Again, because of the limited amount of power draw
per seat, it is possible that your laptop won't get enough power to both
operate and charge. Some airlines, like *Continental Airlines,
specifically state that battery charging is not allowed and ask you to
remove your rechargeable battery from your device*.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

http://www.seatguru.com/articles/in-...ptop_power.php

--
Bill

From what I have read, airlines generally only give you 75 watts maximum
and some laptops are smart enough to figure out that they can't charge
and run the laptop at the same time. Thus they won't charge. I don't
know, are there laptops like this?

Also I have read in the quoted link below, that some airlines tell you
that you can't charge batteries on the plane. And ask you to remove the
battery. I also hear tell that the 15VDC power goes out without warning
during takeoffs and landings. Nice while you don't have a battery
installed, eh? Thank goodness for my PDA that runs 2 weeks on a charge.
;)

Bill

"Barry Watzman" <WatzmanNOSPAM@neo.rr.com> wrote in message
news:4550F85E.9010702@neo.rr.com
> Apple may implement that on their own products (perhaps for fear of
> liability), but it is absolutely not true that it is forbidden to
> charge a battery, nor, in general, is there any way for most laptops
> .... that have only a 2-wire interface to the power adapter .... to
> even know that they are running on an aircraft. And since Fellowes,
> Targus and others make "generic" Auto/Air adapters that also don't
> know what computer they are being used with, it's just not a widely
> implemented practice.
> An argument can be made that perhaps it should be, but on the other
> hand, keep in mind that the Sony batteries that were going incindary
> and were the cause of all of the recalls were doing so even when not
> being charged, even when removed from the laptop and just sitting
> passively without even being installed.
>
>
> BillW50 wrote:
>> <zwsdotcom******.com> wrote in message
>> news:1162916121.212773.323860@i42g2000cwa.googlegr oups.com
>>> Barry Watzman wrote:
>>>
>>>> is a huge price difference. [to use less power, don't actually use
>>>> the laptop and charge the battery at the same time]. The worst
>>>> case
>>>
>>> It is forbidden to charge the battery on an aircraft. Airline
>>> adapters are supposed to be sensed by the computer.
>>>
>>> An example (from an iBook technical ref manual): "The iBook can
>>> operate from a 15-volt power outlet on an airliner, however for
>>> safety reasons the computer will not allowbattery charging. In order
>>> for the computer to detect the connection to airline power, the
>>> airline power cable (available separately) should have a sense
>>> resistor of 24.3K ohms connected between the power plug's shell and
>>> ground."
>>
>> Wow I didn't know this! I googled this and found this among others:
>>
>> http://www.seatguru.com/articles/in-...ptop_power.php