book collections email follower instructable user

In this video I am making my second High-CRI LED light orientated for photography and video recording.

Compared to my previously made 72W LED panel ( http://bit.ly/LED72W ) it is way more efficient (same illumination at 50W), is more powerful (100W), has active cooling and is ~35% lighter.

Provided Amazon links are affiliates

Tools You'll Need:

Main Materials You'll Need:

Other Things You'll Need:

  • Wires, heat shrink tubing, electrical tape, nuts, bolts, washers, right angle corners, sandpaper, thermal paste, rubbing alcohol, heat resistant double sided tape, thick double sided tape, thin double side tape.


Video shot with:

Used lenses:


You can follow me:

Step 1: Preview

Preview of the project, plus comparison vs my previously made 72W CRI 90+ LED panel.

Full size comparison - http://bit.ly/2UPsCfZ

frarugi874 months ago
Just a question: why did you limit the current changing the voltage and not the inverse? Isn't it easier to control the luminosity by changing the current?

diyperspective (author)  frarugi874 months ago
For LEDs it is better to limit the current when we are running them near the max limits. When LEDs heat up, they draw more current. If they heat up even more - even more current. Worst case scenario of this is thermal runaway, when this cycle repeats until LEDs burn out because of too much current.
Example: at 25C LED temp, it runs 38V 0.9A, at 85C it runs 38V 1.08A. So with fixed voltage at different temps we can get very different current. As LEDs degrade a lot more when running out of specs, we should never run past that LED current limit. So it is way easier to fix the current as it will not change because of the tremperature.
Amazing work as always!
Thanks!