UBEC DC/DC Step-Down (Buck) Converter - 5V @ 3A output : ID 1385 : $9.95 : Adafruit Industries, Unique & fun DIY electronics and kits
12V to 6V Power Buck / Modify Power Converter 12V 24V Switch 6V 15A - MODDIY
8W DC-DC 3V-6V to 12V 3A Converter Boost Up Module Power Supply #8777 | eBay
6V to 12V Step Up Converter, DROK DC 12V Boost Converter DC 5V-11V to 12V Voltage Regulator Module 3A 36W Volt Transformer Power Supply for Car Stereo Radio LED Display : Amazon.ca:
12V Step Up Converter, DC 5-11V to 12V 10A 120W Boost Converter Module, 5V 6V 9V Voltage Regulator Waterproof - Walmart.ca
12V/24V to 14.4V 14.5V 14.6V 3A DC DC Step Up Converter Lithium / Lead – Daygreen
120VAC to 6V DC 1000mA Power Supply - Center Negative
TRIPLETT AC/DC to DC 12-Volt Regulated Power Converter 2A CON-24V-12V - The Home Depot
6V to 12V Step Up Converter, DROK DC 12V Boost Converter DC 5V-11V to 12V Voltage Regulator Module 3A 36W Volt Transformer Power Supply for Car Stereo Radio LED Display : Amazon.ca:
universal power adapter 3v 5v 6v 9v 12v - Adjustable Power Supply - Aliexpress
12V/24V to 5V 30A 150W DC DC Step Down Converter Voltage Regulator – Daygreen