Thread: Quick LED query
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17 Dec 2012  
Dwarf

Windows 8.1 Pro RTM x64
 
 

It all depends on what the voltage drop across the LED is. The following assumes a current of 50mA.

Supply: 12V
LED drop: 3V
Resistor: 180Ω

Supply: 12V
LED drop: 1.5V
Resistor: 210Ω

Supply: 12V
LED drop: 0.7V
Resistor: 226Ω

Or nearest preferred value above.

See LED Resistor Calculator
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