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UCTRONICS DC 6V 9V 12V 24V to DC 5V 5A Buck Converter Module, 9-36V Step Down to USB 5V Transformer Dual Output Voltage Regulator Board [2 Pack] : Amazon.ca: Electronics
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DC-DC 3A 5V-12V 24V To 9V Step-down Power Supply Module | Sharvielectronics: Best Online Electronic Products Bangalore
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USB to 9v, DROK 5v to 9v USB Boost Converter, USB Cable DC 5v Step Up to 9v, 1.5A Power Regulator Line with 5.5mm Port 1.2 Meter Length
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MINI DC-DC Boost Converter 1.5V 3V 5V to 5V 9v 12V 1200mA Step-up dc Voltage Regulator Power Supply Module - AliExpress
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