I have a question about a LED array I am designing for a home-made 3D SLA printer. I find the subject of high power led drivers quite confusing but I believe I understand how it works now and I need someone to confirm my findings.
My total LED array will consist of 80, 3W UV LEDs. Their rated direct voltage is 3.2-3.4v and their rated direct current is 700ma.
The LEDs are connected to a large cooling fin with active cooling.
I want to connect them to a 50W constant current power supply at 1500ma, I want to connect them 2 parallel series of 8 LEDs. This would give them 750ma per serie.
I have three questions:
- Is my conclusion correct?
- Would the LED's be able to sustain the additional 50ma above their rated current?
- Would this lead to a shortened lifespan or just kill the LED outright?