Quote:
Originally Posted by Studio25
Is a laptop power supply "intelligent" in that it adjusts its own behaviour based on the state of the laptop's charge (whether it's the laptop telling the PSU what to do or the PSU actively detecting its state)?
Or is it just a transformer?
Within a few days of noticing the laptop doesn't stop charging when 100% full, I've seen a little break in the cable rubber with exposed wire that may or may not be related. I'd don't want have it repaired or buy a new one if I thought it would not fix the problem.
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Usually incoming calls only, i.e. it draws the power from the supply but doesn't talk back, the circuitry within the laptop can tell if the battery is charged and cuts down on the amount of charge when required.
Howstuffworks "Laptop Batteries"
