I recently got a few blue leds from a friend. When I connect them to 5V with a 600 Ohm resistor they shine brightly (i.e. they even blind when looking straight at them). However, normally when the led would support 20mA I should be able to use even lower resistors. However I don't want to damage them. So is there a way that I can find out the actual type of the led so that I can use the optimal resistor for the best brightness?
Greetings and thanks in advance,
Greetings and thanks in advance,