Couldnt decide between Power supply and troubleshooting a laptop but a general sort of a question that I was asked and thought 'I should know the answer to that but dont.' Have since tried to find an answer on line but nothing concrete.
As title - most laptops have a 19volt adapter but run off 12volts.
Other than needing a higher voltage to charge the battery is there some good reason for that.
This also ties in with the old chestnut - if my car is 12 volts and the laptop runs off a 12 volt battery why do I have to get a 12> 240v(120v) inverter then use an adapter to get it down to 19v to run the laptop - should it be possible to feed 12 volts -direct into a laptop to power it.
Simple answers only please.
As title - most laptops have a 19volt adapter but run off 12volts.
Other than needing a higher voltage to charge the battery is there some good reason for that.
This also ties in with the old chestnut - if my car is 12 volts and the laptop runs off a 12 volt battery why do I have to get a 12> 240v(120v) inverter then use an adapter to get it down to 19v to run the laptop - should it be possible to feed 12 volts -direct into a laptop to power it.
Simple answers only please.
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