LEDs, like all diodes, are current driven devices. The light output is directly proportional to the input current provided. It is not enough to provide a constant voltage to the LED. Some method of current limiting should be used when driving LEDs. As an LED heats up the required forward voltage decreases causing the current to increase, which causes more heating, so if not current limiting you can quickly experience thermal runaway.
So THAT’S why the current kept slowly creeping up! I’m new to CoBs so thanks for letting me know! I will have to make an update to point this out so that I’m not giving out incomplete information.
@@KeonsLab I'm glad you found the information helpful. When I started to use some high output LEDs I burned up quite a few because I was only limiting voltage.
I used a step up DC-DC module to make this LED glow. At low voltage, this LED glows brightly enough and consumes low current, but if you need a brighter light for a short time, you can increase the voltage by 2-3 volts and the current consumption will increase. At high power, I covered it with paper so that there would be no bright light during the test and the paper started to burn.
LEDs, like all diodes, are current driven devices. The light output is directly proportional to the input current provided. It is not enough to provide a constant voltage to the LED. Some method of current limiting should be used when driving LEDs. As an LED heats up the required forward voltage decreases causing the current to increase, which causes more heating, so if not current limiting you can quickly experience thermal runaway.
So THAT’S why the current kept slowly creeping up! I’m new to CoBs so thanks for letting me know! I will have to make an update to point this out so that I’m not giving out incomplete information.
@@KeonsLab I'm glad you found the information helpful. When I started to use some high output LEDs I burned up quite a few because I was only limiting voltage.
I used a step up DC-DC module to make this LED glow. At low voltage, this LED glows brightly enough and consumes low current, but if you need a brighter light for a short time, you can increase the voltage by 2-3 volts and the current consumption will increase. At high power, I covered it with paper so that there would be no bright light during the test and the paper started to burn.