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7805 and AC-Adapter


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The battery in my car can supply up to 750 Amps to the starter motor when it is very cold. But the 7805 regulator that is my cell phone charger doesn't care. The 750A battery is connected directly to the input of the 7805.

The interior light in my car is also connected directly to the 750A battery when it is turned on. It doesn't draw 750A!

My home has electrical power up to 200A.
My night light is connected directly to it but it doesn't draw 200A!

Why would a 1A regulator draw more than only 1A?
Actually it might. Its typical max output (and input) current is 2.2A.

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