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3.5A DC DC Converter Module Buck Step Down Voltage Regulator Board 4.5V 27V to 3V 3.3V 3.7V 5V 6V 7.5 9V 12V|6v to 12v|dc-dc converter 12v 5vvoltage converter - AliExpress
Electronics :: Boost & Buck Converters :: Mini-360 DC/DC Buck Converter 4.75V-23V to 1V-17V (Step Down Module)
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5 PCS/LOT DC DC Converter DC 3.5V~30V 10A 100W Boost Voltage Regulator Adjustable Adapter + Red LED Voltmeter|voltmeter digital|voltmetervoltmeter led - AliExpress
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