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How to limit power to LED, efficiently
I am looking to use a 12V, 5 ampere car battery on a small 5V, 2A LED. Typical applications online use a resistor or voltage regulator, but since I am using a battery I would like to conserve power, ...
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How to reduce current in this circuit?
I have the following circuit and I want to reduce the current consumption to the lowest possible.
Basically, I have a series voltage regulator whose output is connected to a transistor to switch on ...