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The resistor
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LM317-ADJ Resistor Value and Circuit for 3.3V,5V,12V,15V,18V | Circuit Ideas I Electronic DIY Projects I Robotics
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12v To 3v Converter Circuit | DC To DC Converter - YouTube
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How can we reduce 12V to 3V by simply using a resistor? - Quora
How can we reduce 12V to 3V by simply using a resistor? - Quora
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