Power Adapter
How come a power adapter such as the one you plug into your laptop will list the voltage and current?
I'm a bit confused here. I've been reading that current is determined based on ...
Power Adapter
How come a power adapter such as the one you plug into your laptop will list the voltage and current?
I'm a bit confused here. I've been reading that current is determined based on the resistance in a circuit (Current = Voltage/Resistance), so I don't understand why the power adapter lists the current although it hasn't encountered any resistance yet to even determine what the current is. I thought it would simply just list the voltage.
I always took this to mean that the voltage will be the specified value (since it is determined by the windings on the transformer and the rectifier or other circuitry) but that the current actually drawn can be up to the specified value (based on the power rating).
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Tags: backup power, power adapter, power source
Posted in Uncategorized
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