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
Basic Light Emitting Diode guide - DP
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Basic Light Emitting Diode guide - DP
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LED Voltage Drop Chart for Magnetic Polarity Detector Circuit | Hall effect, Led voltage, Led
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LED as Zener diode. Design Note 37 – Mohan's electronics blog
Same LED, different voltage drops with different supply voltages - Electrical Engineering Stack Exchange
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