LED current limiting resistor calculator
Calculates a current limiting resistor for LEDs.
Example 1: Must calculate the resistor for a led string of 4 green 5mm leds and 12V supply | View example |
Results | |
Total voltage drop in leds | 2.4 volts |
Required resistor | 12.8 ohms |
Nearest resistor in E-series | 13 ohms |
Resistor power loss | ~7.089231 watts |
Current with selected resistor | ~738.461538 milliamperes |