Driving a LED in the most energy efficient possible way
129278
simple, energy efficient circuit to make single IR LED blink
16242
How do two-leaded color changing LEDs work?
121863
Selecting a MOSFET for driving load from logic
125392
Is LED properly implemented in the constant current circuit?
17263
How to drive 128 LEDs
85123
How to drive a 20mA LED From a 4mA max GPIO Pin
82094
Resistor selection for LED
40711
Getting higher power output by using more resistors
76832
Powering 16 meter LED strip
148525
Why are relays so frequently driven by optocouplers?
68628
SMD LED: How to calculate optical power (in mW) from luminous intensity (in mcd)?
124910
Is a current-limiting resistor required for LEDs if the forward voltage and supply voltage are equal?
51839
LED accent light that slowly dims when removed from power source
62447
How to control Brightness
46538
How long would a 150 Farad Capacitor light up an LED
4030
Do I really need resistors when controlling LEDs with Arduino?
76146
Use Caps Lock LED as HDD LED (or custom) indicator