Power Inverter and use of laptop in car?

Sorry, I completely disagree.
The car provides roughly 12VDC when turned off.
When driving, the alternator pushes the battary up to at least 14.2V.
Without going into analysing the voltage input specification limits of the
PC to see what regulatory system system is built into it & what the MAXIMUM
SAFE limits are, I don't think using a lead DIRECTLY suppying the battery
voltage a very wise idea, as that can run up to 17% overload!
Stick with the inverter.


--

johnf

Why do you want to buy an inverter?
The laptop charger is converting AC to DC.
The inverter would convert DC to AC.
The car is 12V DC.
Buy a cable and forget the charger and inverter.
Here is an example:
http://www.lindelectronics.com/cgi-bin/store/shop.cgi/!ORDERID!/cables/CBLIP-00229/dbx_gen_detail_product/
--
Ron Sommer

"Sarah" wrote in message
...
Hi,

I am looking to buy a power inverter so I can use my laptop (M35) in
the car. The power rating on the laptop's charger is; AC 100-220 1.5A
and DC 12V 4A. There is a compact and nice inverter that I want to
buy, it is rated at 70W. Would it be sufficient to run my laptop? I
don't know much about power so I am hoping that someone can help out.
Thanks.

I have a Car DC-AC converter. It's convenient, but the jumble of
cables can be pain. However, it is nice to be able to simply use the
normal AC/DC converter unit that comes with most things, especially
on long trips. My son took it and our portable Media player on a
trip out west. He and his friends got to listen to their favorite music
and never had to change/or charge a battery.
The unit also has another car lighter jack, so they plugged their cell
phone into it as well.

"johnf" wrote in message
...
Sorry, I completely disagree.
The car provides roughly 12VDC when turned off.
When driving, the alternator pushes the battary up to at least 14.2V.
Without going into analysing the voltage input specification limits of the
PC to see what regulatory system system is built into it & what the
MAXIMUM SAFE limits are, I don't think using a lead DIRECTLY suppying the
battery voltage a very wise idea, as that can run up to 17% overload!
Stick with the inverter.


--

johnf

Why do you want to buy an inverter?
The laptop charger is converting AC to DC.
The inverter would convert DC to AC.
The car is 12V DC.
Buy a cable and forget the charger and inverter.
Here is an example:
http://www.lindelectronics.com/cgi-bin/store/shop.cgi/!ORDERID!/cables/CBLIP-00229/dbx_gen_detail_product/
--
Ron Sommer

"Sarah" wrote in message
...
Hi,

I am looking to buy a power inverter so I can use my laptop (M35) in
the car. The power rating on the laptop's charger is; AC 100-220 1.5A
and DC 12V 4A. There is a compact and nice inverter that I want to
buy, it is rated at 70W. Would it be sufficient to run my laptop? I
don't know much about power so I am hoping that someone can help out.
Thanks.

One is talking about the input voltage from the mains point (designed to be
plugged into a 110v~ powerpoint only, but slightly difficult to plug into a
cigarette socket; therefore completely irelevent).

The other is actually talking about the inverter's output voltage & current
supplied into the PC, (12/4) which is the important part as far as you're
concerned., ie., you need 12VDC out of the inverter with at least 4A
continuous capability. If it's 12V out, but a higher 'A' rating, that's no
problem, as the PC will only use as many amps as it needs at the time.

--

johnf

Thanks Johnf. I am going to pick one up tomorrow an try it. I am just
confused because the laptop charger has 2 ratings on it, the AC and DC
as I mentioned. I am not sure which one to use to do the calculation.
Here, you guys are using the DC 12X4 (fine, that's what you want)
but at the other newsgroup the guy is using the AC 110X1.5!!! -
(irrelevent!)

I'll try one tomorrow and I hope that it won't damage my Laptop! Thanks
again.


"johnf" wrote in message
...
Try again
VA is an AC power measurement
Watts is DC


--

johnf

"V Green" wrote in message
...

"micky" wrote in message
...
Thank you very much! Can I bother you again and ask how did you
figure this out? Just for future reference. Thanks again.

Watts = Voltage * Current

12V * 4A = 48W (assuming 100% efficiency
of the AC-DC adaptor)

you SHOULD have a 22W "buffer"

Ok, I am confused now!! I posted the same question on
Japan.comp.Toshiba and I got the following;

"VA=Watts. So your 110 volts times your 1.5 amps equals 165 Watts. I'd
recommend an inverter of about 350 watts. Gives you power to
spare and won't run so hot as a 175 watt unit might even if it did
work."
I really don't get my Laptop busted! I just got it and I am just
starting to fall in love with it. The money is not an issue, I'd go
out and buy a 500W inverter, but I want to get a small one so it is
easy to use and move around!!

Thanks again to all and hope to get to the bottom of this.

"johnf" wrote in message =
...
Try again
VA is an AC power measurement
Watts is DC

Arrgh... So much wrong information. VA is absolute RMS volts times =
absolute RMS amps. Watts is the of the real part of VA. This distinction =
is important for loads that have a non unity power factor which includes =
most computer power supplies. RMS =3D root mean square. For DC, VA =
equals Watts. For AC, not always true.

Regarding an inverter for the car. Get something over 100 VA and you =
should be fine. The larger units do not connect to the cig lighter =
outlet since it is usually fused at 20 amps.

David

Sarah stated that she had a M35.
Toshiba Satellite M35 is the only M35 that a search returned.
A battery for the M35 is 10.8 volts.
M35 chargers are listed as 15 volts.
Universal chargers can be adjusted to 15 - 24 Volts.

I am curious as to what laptop Sarah has and if the output is actually 12V
DC.
--
Ron Sommer

"johnf" wrote in message
...
Sorry, I completely disagree.
The car provides roughly 12VDC when turned off.
When driving, the alternator pushes the battary up to at least 14.2V.
Without going into analysing the voltage input specification limits of the
PC to see what regulatory system system is built into it & what the
MAXIMUM SAFE limits are, I don't think using a lead DIRECTLY suppying the
battery voltage a very wise idea, as that can run up to 17% overload!
Stick with the inverter.


--

johnf

Why do you want to buy an inverter?
The laptop charger is converting AC to DC.
The inverter would convert DC to AC.
The car is 12V DC.
Buy a cable and forget the charger and inverter.
Here is an example:
http://www.lindelectronics.com/cgi-bin/store/shop.cgi/!ORDERID!/cables/CBLIP-00229/dbx_gen_detail_product/
--
Ron Sommer

"Sarah" wrote in message
...
Hi,

I am looking to buy a power inverter so I can use my laptop (M35) in
the car. The power rating on the laptop's charger is; AC 100-220 1.5A
and DC 12V 4A. There is a compact and nice inverter that I want to
buy, it is rated at 70W. Would it be sufficient to run my laptop? I
don't know much about power so I am hoping that someone can help out.
Thanks.

I agree; there's really only several points to look into.

The laptop will have moulded near the mains socket, the AC voltage, (which
will be ~110-115V) plus the current rating.
If not there, it will be in the handbook.
What can be more simple than going into one or two supplier's with those
figures and telling them you want a cig. lighter adapter inverter which will
comply with those specs?

That way, no confusion for the poor girl over all the previous postings on
AC or DC amps, volts, watts, VA (RMS or not) - much of which just didn't
make sense or was completely incorrect.

All you're concerned with, Sarah, is that you want an inverter which has a
cigarette-lighter adapter & the correct AC supply comes out the other end
with a current adequate enough to supply the laptop.
After all, that's what the salesmen are paid for!


--

johnf

I have a Car DC-AC converter. It's convenient, but the jumble of
cables can be pain. However, it is nice to be able to simply use the
normal AC/DC converter unit that comes with most things, especially
on long trips. My son took it and our portable Media player on a
trip out west. He and his friends got to listen to their favorite music
and never had to change/or charge a battery.
The unit also has another car lighter jack, so they plugged their cell
phone into it as well.

"johnf" wrote in message
...
Sorry, I completely disagree.
The car provides roughly 12VDC when turned off.
When driving, the alternator pushes the battary up to at least 14.2V.
Without going into analysing the voltage input specification limits of
the PC to see what regulatory system system is built into it & what the
MAXIMUM SAFE limits are, I don't think using a lead DIRECTLY suppying
the battery voltage a very wise idea, as that can run up to 17%
overload! Stick with the inverter.


--

johnf

Why do you want to buy an inverter?
The laptop charger is converting AC to DC.
The inverter would convert DC to AC.
The car is 12V DC.
Buy a cable and forget the charger and inverter.
Here is an example:
http://www.lindelectronics.com/cgi-bin/store/shop.cgi/!ORDERID!/cables/CBLIP-00229/dbx_gen_detail_product/
--
Ron Sommer

"Sarah" wrote in message
...
Hi,

I am looking to buy a power inverter so I can use my laptop (M35) in
the car. The power rating on the laptop's charger is; AC 100-220 1.5A
and DC 12V 4A. There is a compact and nice inverter that I want to
buy, it is rated at 70W. Would it be sufficient to run my laptop? I
don't know much about power so I am hoping that someone can help out.
Thanks.

Sarah stated that she had a M35.
Toshiba Satellite M35 is the only M35 that a search returned.
A battery for the M35 is 10.8 volts.
M35 chargers are listed as 15 volts.
Universal chargers can be adjusted to 15 - 24 Volts.

I am curious as to what laptop Sarah has and if the output is actually
12V DC.
--
Ron Sommer

Nearly all inverters are actually a type of switching-mode power supplies
which give a constant output voltage irrespective of how much current the
laptop is using - full load or just on standby.

Re. the 12v comment, I think you'll find there is a voltage regulater in the
Laptop power supply, which automatically limits the voltage on that rail to
12V.

--

johnf


"johnf" wrote in message
...
Sorry, I completely disagree.
The car provides roughly 12VDC when turned off.
When driving, the alternator pushes the battary up to at least 14.2V.
Without going into analysing the voltage input specification limits of
the PC to see what regulatory system system is built into it & what the
MAXIMUM SAFE limits are, I don't think using a lead DIRECTLY suppying
the battery voltage a very wise idea, as that can run up to 17%
overload! Stick with the inverter.


--

johnf

Why do you want to buy an inverter?
The laptop charger is converting AC to DC.
The inverter would convert DC to AC.
The car is 12V DC.
Buy a cable and forget the charger and inverter.
Here is an example:
http://www.lindelectronics.com/cgi-bin/store/shop.cgi/!ORDERID!/cables/CBLIP-00229/dbx_gen_detail_product/
--
Ron Sommer

"Sarah" wrote in message
...
Hi,

I am looking to buy a power inverter so I can use my laptop (M35) in
the car. The power rating on the laptop's charger is; AC 100-220 1.5A
and DC 12V 4A. There is a compact and nice inverter that I want to
buy, it is rated at 70W. Would it be sufficient to run my laptop? I
don't know much about power so I am hoping that someone can help out.
Thanks.

Whoa, Ron, I re-read you post & wonder if you misunderstood the question.
What Sarah need is a 110V inverter to plug into the mains socket, not as a
replacement for the battery.

--

johnf

Sarah stated that she had a M35.
Toshiba Satellite M35 is the only M35 that a search returned.
A battery for the M35 is 10.8 volts.
M35 chargers are listed as 15 volts.
Universal chargers can be adjusted to 15 - 24 Volts.

I am curious as to what laptop Sarah has and if the output is actually
12V DC.
--
Ron Sommer

Nearly all inverters are actually a type of switching-mode power
supplies which give a constant output voltage irrespective of how much
current the laptop is using - full load or just on standby.

Re. the 12v comment, I think you'll find there is a voltage regulater
in the Laptop power supply, which automatically limits the voltage on
that rail to 12V.

--

johnf


"johnf" wrote in message
...
Sorry, I completely disagree.
The car provides roughly 12VDC when turned off.
When driving, the alternator pushes the battary up to at least 14.2V.
Without going into analysing the voltage input specification limits of
the PC to see what regulatory system system is built into it & what
the MAXIMUM SAFE limits are, I don't think using a lead DIRECTLY
suppying the battery voltage a very wise idea, as that can run up to
17% overload! Stick with the inverter.


--

johnf

Why do you want to buy an inverter?
The laptop charger is converting AC to DC.
The inverter would convert DC to AC.
The car is 12V DC.
Buy a cable and forget the charger and inverter.
Here is an example:
http://www.lindelectronics.com/cgi-bin/store/shop.cgi/!ORDERID!/cables/CBLIP-00229/dbx_gen_detail_product/
--
Ron Sommer

"Sarah" wrote in message
...
Hi,

I am looking to buy a power inverter so I can use my laptop (M35) in
the car. The power rating on the laptop's charger is; AC 100-220
1.5A and DC 12V 4A. There is a compact and nice inverter that I
want to buy, it is rated at 70W. Would it be sufficient to run my
laptop? I don't know much about power so I am hoping that someone
can help out. Thanks.

Ron, you are correct! My charger is 15V DC not 12V as I stated in my
original post. I am looking for a DC to AC inverter, I don't know what you
mean by universal chargers!

"Ron Sommer" wrote in message
...
Sarah stated that she had a M35.
Toshiba Satellite M35 is the only M35 that a search returned.
A battery for the M35 is 10.8 volts.
M35 chargers are listed as 15 volts.
Universal chargers can be adjusted to 15 - 24 Volts.

I am curious as to what laptop Sarah has and if the output is actually 12V
DC.
--
Ron Sommer

"johnf" wrote in message
...
Sorry, I completely disagree.
The car provides roughly 12VDC when turned off.
When driving, the alternator pushes the battary up to at least 14.2V.
Without going into analysing the voltage input specification limits of
the PC to see what regulatory system system is built into it & what the
MAXIMUM SAFE limits are, I don't think using a lead DIRECTLY suppying the
battery voltage a very wise idea, as that can run up to 17% overload!
Stick with the inverter.


--

johnf

Why do you want to buy an inverter?
The laptop charger is converting AC to DC.
The inverter would convert DC to AC.
The car is 12V DC.
Buy a cable and forget the charger and inverter.
Here is an example:
http://www.lindelectronics.com/cgi-bin/store/shop.cgi/!ORDERID!/cables/CBLIP-00229/dbx_gen_detail_product/
--
Ron Sommer

"Sarah" wrote in message
...
Hi,

I am looking to buy a power inverter so I can use my laptop (M35) in
the car. The power rating on the laptop's charger is; AC 100-220 1.5A
and DC 12V 4A. There is a compact and nice inverter that I want to
buy, it is rated at 70W. Would it be sufficient to run my laptop? I
don't know much about power so I am hoping that someone can help out.
Thanks.

Hi John(f). Thanks for all your help. I got a 70w inverter today and plugged
it in and it works like a charm! I ended up listening to you because almost
everybody else said that I needed a big (300w+) inverter! I guess they are
using the AC ratings to calculate the needed power. I really did not and
would not get one of these big inverter, it is just too much to haul around
and the wiring is just too messy! The one I got is nice, small, and compact
and the whole unit plugs into the cigarette lighter. It fits my needs
perfectly. By the way, the rating on the charger is 15VX4A not 12V as I
stated in my OP!



Again, thank you very much!


Sarah.

"johnf" wrote in message
...
Whoa, Ron, I re-read you post & wonder if you misunderstood the question.
What Sarah need is a 110V inverter to plug into the mains socket, not as a
replacement for the battery.

--

johnf

Sarah stated that she had a M35.
Toshiba Satellite M35 is the only M35 that a search returned.
A battery for the M35 is 10.8 volts.
M35 chargers are listed as 15 volts.
Universal chargers can be adjusted to 15 - 24 Volts.

I am curious as to what laptop Sarah has and if the output is actually
12V DC.
--
Ron Sommer

Nearly all inverters are actually a type of switching-mode power
supplies which give a constant output voltage irrespective of how much
current the laptop is using - full load or just on standby.

Re. the 12v comment, I think you'll find there is a voltage regulater
in the Laptop power supply, which automatically limits the voltage on
that rail to 12V.

--

johnf


"johnf" wrote in message
...
Sorry, I completely disagree.
The car provides roughly 12VDC when turned off.
When driving, the alternator pushes the battary up to at least 14.2V.
Without going into analysing the voltage input specification limits of
the PC to see what regulatory system system is built into it & what
the MAXIMUM SAFE limits are, I don't think using a lead DIRECTLY
suppying the battery voltage a very wise idea, as that can run up to
17% overload! Stick with the inverter.


--

johnf

Why do you want to buy an inverter?
The laptop charger is converting AC to DC.
The inverter would convert DC to AC.
The car is 12V DC.
Buy a cable and forget the charger and inverter.
Here is an example:
http://www.lindelectronics.com/cgi-bin/store/shop.cgi/!ORDERID!/cables/CBLIP-00229/dbx_gen_detail_product/
--
Ron Sommer

"Sarah" wrote in message
...
Hi,

I am looking to buy a power inverter so I can use my laptop (M35) in
the car. The power rating on the laptop's charger is; AC 100-220
1.5A and DC 12V 4A. There is a compact and nice inverter that I
want to buy, it is rated at 70W. Would it be sufficient to run my
laptop? I don't know much about power so I am hoping that someone
can help out. Thanks.

Universal chargers? That makes two of us. Chargers are for charging
batteries, not to be used as a Voltage Regulated power suppy, which is what
you needed.
Chargers are NOT regulated, voltage varies continously & generate stacks of
hash.


--

johnf

Ron, you are correct! My charger is 15V DC not 12V as I stated in my
original post. I am looking for a DC to AC inverter, I don't know what
you mean by universal chargers!

"Ron Sommer" wrote in message
...
Sarah stated that she had a M35.
Toshiba Satellite M35 is the only M35 that a search returned.
A battery for the M35 is 10.8 volts.
M35 chargers are listed as 15 volts.
Universal chargers can be adjusted to 15 - 24 Volts.

I am curious as to what laptop Sarah has and if the output is actually
12V DC.
--
Ron Sommer

"johnf" wrote in message
...
Sorry, I completely disagree.
The car provides roughly 12VDC when turned off.
When driving, the alternator pushes the battary up to at least 14.2V.
Without going into analysing the voltage input specification limits of
the PC to see what regulatory system system is built into it & what
the MAXIMUM SAFE limits are, I don't think using a lead DIRECTLY
suppying the battery voltage a very wise idea, as that can run up to
17% overload! Stick with the inverter.


--

johnf

Why do you want to buy an inverter?
The laptop charger is converting AC to DC.
The inverter would convert DC to AC.
The car is 12V DC.
Buy a cable and forget the charger and inverter.
Here is an example:
http://www.lindelectronics.com/cgi-bin/store/shop.cgi/!ORDERID!/cables/CBLIP-00229/dbx_gen_detail_product/
--
Ron Sommer

"Sarah" wrote in message
...
Hi,

I am looking to buy a power inverter so I can use my laptop (M35) in
the car. The power rating on the laptop's charger is; AC 100-220
1.5A and DC 12V 4A. There is a compact and nice inverter that I
want to buy, it is rated at 70W. Would it be sufficient to run my
laptop? I don't know much about power so I am hoping that someone
can help out. Thanks.

15V is not that critical. What comes after that is important. As I said,
most car alternators when the motor is running put out 13.8 - 14.2V anyway.

--

johnf
(retired Certified Electronics & Design Engineer in almost all fields for 50
yrs. - didn't tell U that B4 as I didn't want to try & bias you)

Glad it worked out fine for you & it was an interesting thread.

Hi John(f). Thanks for all your help. I got a 70w inverter today and
plugged it in and it works like a charm! I ended up listening to you
because almost everybody else said that I needed a big (300w+)
inverter! I guess they are using the AC ratings to calculate the needed
power. I really did not and would not get one of these big inverter, it
is just too much to haul around and the wiring is just too messy! The
one I got is nice, small, and compact and the whole unit plugs into the
cigarette lighter. It fits my needs perfectly. By the way, the rating
on the charger is 15VX4A not 12V as I stated in my OP!



Again, thank you very much!


Sarah.

"johnf" wrote in message
...
Whoa, Ron, I re-read you post & wonder if you misunderstood the
question. What Sarah need is a 110V inverter to plug into the mains
socket, not as a replacement for the battery.

--

johnf

Sarah stated that she had a M35.
Toshiba Satellite M35 is the only M35 that a search returned.
A battery for the M35 is 10.8 volts.
M35 chargers are listed as 15 volts.
Universal chargers can be adjusted to 15 - 24 Volts.

I am curious as to what laptop Sarah has and if the output is
actually 12V DC.
--
Ron Sommer

Nearly all inverters are actually a type of switching-mode power
supplies which give a constant output voltage irrespective of how much
current the laptop is using - full load or just on standby.

Re. the 12v comment, I think you'll find there is a voltage regulater
in the Laptop power supply, which automatically limits the voltage on
that rail to 12V.

--

johnf


"johnf" wrote in message
...
Sorry, I completely disagree.
The car provides roughly 12VDC when turned off.
When driving, the alternator pushes the battary up to at least
14.2V. Without going into analysing the voltage input specification
limits of the PC to see what regulatory system system is built into
it & what the MAXIMUM SAFE limits are, I don't think using a lead
DIRECTLY suppying the battery voltage a very wise idea, as that can
run up to 17% overload! Stick with the inverter.


--

johnf

Why do you want to buy an inverter?
The laptop charger is converting AC to DC.
The inverter would convert DC to AC.
The car is 12V DC.
Buy a cable and forget the charger and inverter.
Here is an example:
http://www.lindelectronics.com/cgi-bin/store/shop.cgi/!ORDERID!/cables/CBLIP-00229/dbx_gen_detail_product/
--
Ron Sommer

"Sarah" wrote in message
...
Hi,

I am looking to buy a power inverter so I can use my laptop (M35)
in the car. The power rating on the laptop's charger is; AC
100-220 1.5A and DC 12V 4A. There is a compact and nice inverter
that I
want to buy, it is rated at 70W. Would it be sufficient to run my
laptop? I don't know much about power so I am hoping that someone
can help out. Thanks.

Here is a great, inexpensive, tiny 140 watt invertor perfect for laptop bag:

http://www.techbuys.net/techbuys2003/tia-c140.html

Thanks
Now I am no longer curious. :-)
--
Ron Sommer

"Sarah" wrote in message
...
Ron, you are correct! My charger is 15V DC not 12V as I stated in my
original post. I am looking for a DC to AC inverter, I don't know what you
mean by universal chargers!

"Ron Sommer" wrote in message
...
Sarah stated that she had a M35.
Toshiba Satellite M35 is the only M35 that a search returned.
A battery for the M35 is 10.8 volts.
M35 chargers are listed as 15 volts.
Universal chargers can be adjusted to 15 - 24 Volts.

I am curious as to what laptop Sarah has and if the output is actually
12V DC.
--
Ron Sommer

"johnf" wrote in message
...
Sorry, I completely disagree.
The car provides roughly 12VDC when turned off.
When driving, the alternator pushes the battary up to at least 14.2V.
Without going into analysing the voltage input specification limits of
the PC to see what regulatory system system is built into it & what the
MAXIMUM SAFE limits are, I don't think using a lead DIRECTLY suppying
the battery voltage a very wise idea, as that can run up to 17%
overload!
Stick with the inverter.


--

johnf

Why do you want to buy an inverter?
The laptop charger is converting AC to DC.
The inverter would convert DC to AC.
The car is 12V DC.
Buy a cable and forget the charger and inverter.
Here is an example:
http://www.lindelectronics.com/cgi-bin/store/shop.cgi/!ORDERID!/cables/CBLIP-00229/dbx_gen_detail_product/
--
Ron Sommer

"Sarah" wrote in message
...
Hi,

I am looking to buy a power inverter so I can use my laptop (M35) in
the car. The power rating on the laptop's charger is; AC 100-220 1.5A
and DC 12V 4A. There is a compact and nice inverter that I want to
buy, it is rated at 70W. Would it be sufficient to run my laptop? I
don't know much about power so I am hoping that someone can help out.
Thanks.

"johnf" wrote in message
...
One is talking about the input voltage from the mains point (designed to
be plugged into a 110v~ powerpoint only, but slightly difficult to plug
into a cigarette socket; therefore completely irelevent).

The other is actually talking about the inverter's output voltage &
current supplied into the PC, (12/4) which is the important part as far as
you're concerned., ie., you need 12VDC out of the inverter with at least
4A continuous capability. If it's 12V out, but a higher 'A' rating, that's
no problem, as the PC will only use as many amps as it needs at the time.

--

johnf

Thanks Johnf. I am going to pick one up tomorrow an try it. I am just
confused because the laptop charger has 2 ratings on it, the AC and DC
as I mentioned. I am not sure which one to use to do the calculation.
Here, you guys are using the DC 12X4 (fine, that's what you want)
but at the other newsgroup the guy is using the AC 110X1.5!!! -
(irrelevent!)

I'll try one tomorrow and I hope that it won't damage my Laptop! Thanks
again.


"johnf" wrote in message
...
Try again
VA is an AC power measurement
Watts is DC


--

johnf

"V Green" wrote in message
...

"micky" wrote in message
...
Thank you very much! Can I bother you again and ask how did you
figure this out? Just for future reference. Thanks again.

Watts = Voltage * Current

12V * 4A = 48W (assuming 100% efficiency
of the AC-DC adaptor)

you SHOULD have a 22W "buffer"

Ok, I am confused now!! I posted the same question on
Japan.comp.Toshiba and I got the following;

"VA=Watts. So your 110 volts times your 1.5 amps equals 165 Watts. I'd
recommend an inverter of about 350 watts. Gives you power to
spare and won't run so hot as a 175 watt unit might even if it did
work."
I really don't get my Laptop busted! I just got it and I am just
starting to fall in love with it. The money is not an issue, I'd go
out and buy a 500W inverter, but I want to get a small one so it is
easy to use and move around!!

Thanks again to all and hope to get to the bottom of this.


See if your computer manufacturer supplies a car adapter. Seems kinda silly
to convert DC to AC just to convert it back to DC again with the comps ac
adapter.