This is part 2 of my diy led flood light that is going to be used for high speed video filming with the FPS1000HD camera. It should be able to deliver around 20000-25000 Lumen.
Here I modify 3x HP server power supplies to deliver 36VDC, add fan controllers for the heat sinks and box it all up in a “very compact” box that can be handheld.
It is being built form 5x 50W LED COBs mounted on old Pentium4 CPU coolers.
I got no affiliation with these sellers, but it is where I bought my parts:
50W LED COB chips: https://www.ebay.co.uk/itm/50-W-Watt-LED-Chip-kaltweiss-24-40-mil-4500-Lm-6000K-kw-COB-Fluter-Flutlicht/162464897645?ssPageName=STRK%3AMEBIDX%3AIT
Reflector seller1: https://www.ebay.co.uk/itm/50W-70W-100W-120W-COB-Chip-LED-Lens-Fixed-Bracket-50mm-Reflector-Collimator/112785049513?ssPageName=STRK%3AMEBIDX%3AIT
Reflector seller2: https://www.ebay.co.uk/itm/50W-70W-100W-120W-50mm-Reflector-Collimator-COB-Chip-Fixed-Bracket-LED-Lens/263468105919?ssPageName=STRK%3AMEBIDX%3AIT