What is the source of this problem? I am studying LED characteristics. I found that yellow and blue LED has low voltages than red and green respectively. - Quora
What is the typical forward voltage drop for a light-emitting diode? - Quora
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Why did my 3mm yellow LED diode burn out when connected to two AA batteries, even though I connected it to a 3 volt 2032 battery and it was fine? - Quora
LED color Forward voltage Red 1.8 V Yellow 2.1V Green | Chegg.com
NEWBIE - how do I know which resitor for a LED? - General Electronics - Arduino Forum
How to find the forward voltage of LED - Quora
