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Amazon.com: DC 24V to DC 12V 10A 120W Step Down Buck Converter Voltage Regulator Reducer Power Converter Mini Module Transformer : Electronics
Amazon.com: DollaTek DC-DC Converter Module 300W 20A DC-DC Step-Down Converter Step-Down Module Constant Current LED Driver : Electronics
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DC 12v Step up to 24v Converter Regulator 5A 120W Power Supply Adapter for Motor Car Truck Vehicle Boat Solar System etc.(Accept DC9-20V Inputs)
Amazon.com: DC-DC Buck Converter Step Down Module, DC 6.5V-60V to 1.25-30V Maximum 10A Adjustable Power Supply Voltage Regulator Module, Voltage Step Down Converter Board : Electronics
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Amazon.com: LM2596 DC-DC 3A Adjustable Buck Converter Electronic Blue Circuit Boards Metal Buck Boost Converter Module Step Down Power Supply 3.0-40V to 1.5-35V(10PCS) : Electronics
Module Convertisseur DC/DC - alimentation ajustable avec voltmetre 40V 5A 75W : Amazon.fr: Commerce, Industrie et Science
Amazon.com: 12v to 3.7v Buck Converter, DROK DC 8-35V to 3.7V 3A 11W Voltage Regulator Board Power Supply Module, 5V 6V 9V 12V 24V Waterproof Car Volt Step Down Buck Converter :
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DC DC Voltage Step Up Converter Boost Power Module 10-60V to 12-97V 1500W 30A
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Amazon.com: [2-Pack] Adjustable DC-DC Buck Boost Converter Automatic Wide Voltage Regulator XL6009 DC to DC 5-32 V to 1.25-35 V Voltage Module : Electronics