How To Calculate The Voltage Drop Across a Resistor - Electronics - YouTube
batteries - 9V powering to the safest maximum brightness of 4 IR LEDs in series - Electrical Engineering Stack Exchange
LED Resistor Calculator
Time -Voltage drop at 12V with 5Watt LED bulb as load | Download Table
Light Emitting Diode or the LED Tutorial
Series LED Resistor Calculator - Electrical Engineering & Electronics Tools
Infrared LEDs
Best IR LED Circuit - LEDs and Multiplexing - Arduino Forum
Light-Emitting Diodes (LEDs) - learn.sparkfun.com
The Forward Voltages of Different LEDs | CircuitBread
How figure out current draw (of LEDS) using a DMM and resistors:
LED Voltage Drop Chart for Magnetic Polarity Detector Circuit | Led voltage, Hall effect, Led
Basic Light Emitting Diode guide - DP
How Does a 5mm LED Work? - LEDSupply Blog
Basic Light Emitting Diode guide - DP
LED - Infrared 850nm - COM-09469 - SparkFun Electronics
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IR Emitter LED 940nm 5mm (5-Pack) - ProtoSupplies
How to Build an IR LED Circuit
Driving an IR LED: constant current source or not – Arduino, ESP8266, ESP32 & Raspberry Pi stuff
IV curves | LEDnique
How much voltage to give my IR LED? - Electrical Engineering Stack Exchange
Use LED in Robot Projects - Oscar Liang
LED Series Resistor Calculator | DigiKey Electronics
Precise LED Luminance Control | DigiKey
LED as Zener diode. Design Note 37 – Mohan's electronics blog
