How can I calculate the current through an LED?
93477
Does LED brightness change with voltage?
152666
Coin cell to power a 5mm UV LED?
68628
SMD LED: How to calculate optical power (in mW) from luminous intensity (in mcd)?
42421
How do I solve this circuit using nodal analysis?
9182
Driving LED with PIC 5V
117910
How to drive multiple LEDs from a Li-ion battery (with varying voltage)?
6117
How to calculate the resistance of a complicated circuit?
136180
How to use resistors?
64598
Relationship between current through a motor and it's load
28361
How can I drive 12v LEDs from my Arduino Nano?
30881
How to find the resistor value using the color codes?
20802
Need help with a circuit diagram
12199
Return value of current watt consumption on command line
101263
Measuring an Arduino's power source voltage using Analog In
105529
Detecting state of LED to control another circuit
53976
How to connect an LED indicator to a circuit?
121975
How to use Ampere's Law for a semi-infinite wire with current?