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Posted

Just a question

When I disconnect the PC from the transformer is it still drawing current from the mains?

I usually switch it off but noticed if it is left on, the transformer is cold to touch, so maby it is not.

Posted
Yes the power supply that brings the current down to 13volts.

FYI - current is measured in amps.

I'm assuming you're talking about a laptop charger?

Basically the answer is yes... it will still draw power from the mains, as there will still be some (very small amount) load, but no where near as much as when it's plugged in.

load = resistance = heat

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