I have a really old Toshiba Satellite A30 laptop and i want to buy another power adapter that will work in the car. I have see lots of them but i dont know if its compatible with mine. My current adapter has a 19W output and this works fine, so if i find another with the same output does that mean it should work too?
You say that the output wattage of your converter for your laptop is 19W. The converter I posted has a maximum wattage rating of 75W. Thus meaning that it will run with no problem. (Not with this specific one, but in the past I have even hooked up a TV and XBOX to one of these).
With these adapters, all you do is plug them into your cigarette lighter (12v outlet.). This will then convert the power from Direct Current(Car) to Alternating Current (like in your home). The front face of the converter will have either one or two outlets that look exactly what comes out of the wall in your home. Just plug in your adapter into the converter and "viola"! You have power.
Exactly, examine your brick, there will be a listing for Output, and it will give you a value for volts and amps. Multiply those together to see how much wattage your using. If you purchase a different adapter, you will need to get one that matches the voltage and equals or exceeds the amperage.
I don't think he is looking for a replacement "BricK" OP correct me If I'm wrong. I think he wants to use in car and looking to plug into cig Lighter.
Power / current is not a question then, as you can probably draw up to 15 to 20 Amps - BUT current will only be what the computer needs. Look at battery, if it is a 14 V, then I think your ok - select one with a fuse