HiLetgo 10pcs LM317 DC-DC Converter Buck Step Down Circuit Board Module Linear Regulator LM317 Adjustable Voltage Regulator Power Supply

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The HiLetgo 10pcs LM317 DC-DC Converter Buck Step Down Circuit Board Module is a versatile adjustable voltage regulator that supports an input voltage range of 4.2V to 40V and provides an adjustable output voltage from 1.2V to 37V with a maximum output current of 1.5A, making it an essential component for both DIY enthusiasts and professional engineers.