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1111fourone DC-DC LM2596HV Buck Converter 5V-60V to 1.25V-26V Step-down Power Module 48V to 3V/5V/12V Voltage Regulator - Walmart.com
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Eummy DC-DC Buck Converter Module DC 12V/24V to DC 5V Step Down Module Waterproof Micro/Type-C DC Power Adapter Converter for Ring Keypad Cellphone Car GPS Device - Walmart.com
DC-DC Buck Converter Step-down 12V to 3.3V/5V Power Supply Module
Pololu 5V, 2.5A Step-Down Voltage Regulator D24V22F5
DC/DC 24V to 5V Buck Converter
VERTER 5V USB Buck-Boost - 500mA from 3V-5V / 1000ma from 5V-12V
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MPM3610 5V Buck Converter Breakout - 21V In 5V Out at 1.2A : ID 4739 : $5.95 : Adafruit Industries, Unique & fun DIY electronics and kits
Amazon.com: 10 Pieces 5v Regulator Module Mini Voltage Reducer DC 4.5-24V 12V 24V to 5V 3A Volt Buck Converter Power Supply Transformer Module : Electronics
LM317 DC-DC Converter 5V 6V 9V 12V 24V Voltage Step Down Module Linear Regulator
Pololu - 5V, 1.5A Step-Up/Step-Down Voltage Regulator S13V15F5
DC Buck Converter
DC-DC Buck Converter Step down Voltage Regulator Power Supply Module 5V 12V 3A | eBay
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Source DC-DC 12-24V To 5V 3A Step Down Supply Module Voltage Buck Converter Adjustable 97.5% 1.8V 2.5V 3.3V 5V 9V 12V on m.alibaba.com
Mini DC-DC 12-24V To 5V 3A Step Down Power Supply Module Voltage Buck Converter Adjustable 97.5% 1.8V 2.5V 3.3V 5V 9V 12V - AliExpress
5W DC DC 5V 36V to 5 12V Step down Power Module Buck Converter Replace – Aideepen