A detail about LED heatsinks

A project log for UV Curing Chamber

A UV light curing chamber made with an old rack, some aluminum foil, and three 50W UV LEDS. An Arduino is used as a programmable timer.

andrs-lopez-pulzovanAndrés Lopez Pulzovan 08/29/2020 at 15:180 Comments

Heat sinking on CoB LEDs is critical, because the dissipated heat is substantial and the junction voltage of these LEDs drifts depending on temperature. In this case I used three heat sinks that were salvaged from the same devices extracted from the rack, and they have proven insufficient, because the temperature rise after 3 minutes of continuous operation is unacceptable. Fans will be added to improve heat dissipation