So far, I know it follows a IV graph. And does not act the same way as a resistor which uses Ohm's law.
Thanks in advance!
Thanks in advance!
How is current limited in an LED.
- Thread starter engineering1
- Start date
AlbertHall
- Joined Jun 4, 2014
- 12,346
Read here: https://www.sparkfun.com/tutorials/219
Lyonspride
- Joined Jan 6, 2014
- 137
"Constant current source" is the right way, but if you know the voltage is fixed, then a resistor is easier and cheaper.
Dedicated LED driver with boost converter is good if you want to keep adding LEDs, they allow hundreds of LEDs in series from a low voltage supply (typically found in small LCD screens). Something like the PT4115 (IIRC), you can actually buy them on ready populated PCBs for just a few £.
Dedicated LED driver with boost converter is good if you want to keep adding LEDs, they allow hundreds of LEDs in series from a low voltage supply (typically found in small LCD screens). Something like the PT4115 (IIRC), you can actually buy them on ready populated PCBs for just a few £.
