TORCHSTAR Step Down Voltage Convertor 10-28V AC to 12V DC, AC/DC to DC, 15-40V DC to 12V DC Power Supply, IP68 Waterproof Ac to Dc Converter, LED Driver for Low Voltage Landscape
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DC-DC 12V 24V to DC 200-450V 220V 380V High Voltage Boost Converter Step Up NEW | eBay
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DC-to-DC Converters: Design, Working & Applications