Dan,
I am going to Spain next month (240v). I noticed my tiny Toshiba power
supply says input: 100-240 volts, output: 19v.
Are you saying that I do NOT need a step-down transformer? How does the
transformer detect and switch modes?
- Brian
The transformer is actually your power supply.
Most laptops have a power supply that is also a power transformer
that converts 120-240 VAC into 18 (aprox.) VDC which then plugs into
your laptop.
You can buy the plug adapters (which is what they are) at most big
box store along with Radio
It's magic.
Seriously, the 100-240v designation on the power supply indicates that it can
handle both voltages, sensing the input voltage and automatically stepping it
down to the much lower voltage used by the computer. By building this sensing
and switching capability into a single power
Actually it has been around a long time.
Your power supply on your desktop has always been able of doing the
same things. Look at it, it has a switch on it for 110-240. All it
took was a different cord, with the correct end on it for the plug in the wall.
Many of our toys actually use DC
!
- Brian
- Original Message -
From: Rev. Stewart Marshall [EMAIL PROTECTED]
To: COMPUTERGUYS-L@LISTSERV.AOL.COM
Sent: Wednesday, February 13, 2008 1:08 PM
Subject: Re: [CGUYS] Using Laptop in Spain
Actually it has been around a long time.
Your power supply on your desktop has always been
That's Brilliant! And magical!
Somehow I was not notified when this innovation materialized.
Thanks,
Brian
- Original Message -
From: Daniel Else [EMAIL PROTECTED]
Sent: Wednesday, February 13, 2008 11:39 AM
Subject: Re: [CGUYS] Using Laptop in Spain
It's magic.
Seriously
It is called a switching power supply. It works very differently from
the traditional transformer-rectifier power supplies (linear power
supplies) you may be familiar with. In simple terms it is an oscillator
that produces a high frequency square wave going from zero volts to some
positive
Many thanks, Tom. Now I know why my studio flash
works so seamlessly in Budapest, Prague, Warsaw and
here in the US. Square waves. This is miraculous
engineering. When I was a child in France,
transformers weighed as much as today's SUV's.
Chad
[mailto:[EMAIL PROTECTED] On Behalf Of chad evans wyatt
Sent: Wednesday, February 13, 2008 4:20 PM
To: COMPUTERGUYS-L@LISTSERV.AOL.COM
Subject: Re: [CGUYS] Using Laptop in Spain
Many thanks, Tom. Now I know why my studio flash
works so seamlessly in Budapest, Prague, Warsaw and
here
