This is much more than a DC-DC converter with a wide input range; when they say it is made to accept just about anything as an input, they mean it. Found a working power source but don’t know ...

The VR10 converts a 24VDC input into a regulated 5VDC or 12VDC output ... and stackable power converter that optimizes system performance, while reducing costs.” The Altronix VR10 offers ...

Schaefer, a manufacturer of robust and reliable power supplies, is pleased to announce the MHVC250 high voltage dc/dc converter. The MHVC250 design features a wide input range of 420VDC to 975VDC ...