No, just buy a car laptop power adapter (make sure it works with your brand/model). They're cheap and easy to find.
However such adapters will not force your laptop to turn on/off.
Hey guys... I've been reading around and I'm just getting somewhat confused.
I understand that DC-DC is better, however... my setup is a
2.4ghz celeron laptop
7inch lilliput touch screen
Is it true that I NEED to use an inverter since I have a laptop and it already has a PSU?
My main concern is that I want the laptop to turn on/off with the car key, the screen doesn't matter to me as much, and I thought that with an inverter I couldn't do this little trick... Plus inverters are inefficient, noisy, and hot.
There are DC-DC converters that simply do a 12v-19v (I'm assuming your laptop wants 19v -- check your AC power brick) and will give you the power you want. Shutdown/Startup is harder because there's no native way to let your laptop know that your car is running or not. There are various hacks on this site, including soldering wires to the power button and constructing a circuit to hit the switch on ignition.
Thanks for the response man. Where would I look into buying one of those? I looked on the store in this site and I didn't really see what I needed...
Good brands? Good sites?
Old Systems retired due to new car
New system at design/prototype stage on BeagleBoard.
That first link looks like what I need, when I looked at it the first time I thought that it was part of building an actual computer, I didn't realize that I could plug my laptop right into it?
So I would just plug my screen and laptop into this and plug this into an acc wire? Or where would this plug into?