Amazon.com: Power Supply Compact DC to DC Isolated Step Down Voltage Converter, Regulator, Protected & Non-Latching, 48V in, 3.3V Out at 26A, High Reliability (2.8 million hours), Extreme Environmental Conditions : Electronics
Amazon.com: Isolated Power Module DC-DC Converter in 10-16V Out 12V with Connector Cables : Electronics
Amazon.com: Daygreen 24V to 12V 40A 480W Car Step Down Power Voltage Regulator DC DC Converter Acc Switch, Non-Isolated : Electronics
Amazon.com: 2Pcs AC DC Converter Module Universal 110V 120V 220V 230V to DC 5V 12V Isolated Switching Power Supply Board (DC 12V 1A Version) : Electronics
Amazon.com: 24V to 12V 50A Non-Isolated DC Buck Converter High Power Step-Down Power Supply 600W DC-DC Power Supply : Electronics
MEAN WELL RSD-30L-12 RSD-30 Series 30 W 18 to 72 Vin 12 Vout 2.5 A Isolated DC/DC Converter - 1 item(s): Amazon.com: Industrial & Scientific