coolwaters
Newly Enlightened
- Joined
- Jul 5, 2007
- Messages
- 123
im trying to light up about 50 of these RED 5mm LEDs. standard 2v 20mA LEDs.
i couldnt find a constant current regulator that goes that low. lowest i seen was 300mA.
what do i need to make something like this? my power supply is 12v.
i dont like using resistors because they dont help save the LEDs and just waste power and create heat.
is there a diagram on how to make a circuit that gives out 20mA?
i couldnt find a constant current regulator that goes that low. lowest i seen was 300mA.
what do i need to make something like this? my power supply is 12v.
i dont like using resistors because they dont help save the LEDs and just waste power and create heat.
is there a diagram on how to make a circuit that gives out 20mA?