LED Resistor Calculator


I believe this calculator to be accurate, but I assume no responsibilities or lilabilities for any errors that may occur in the use of this program!

SOME NOTES:

This LED Resistor Calculator may also be used to calculate series resistors that are required for Zeners Diodes or a Standard Diode that is being Foreward biased and used like a Zener.

This calculator should determine the necessary resistor and wattage values for you.

If more than one LED or diode is used in a series string,  Add up all the "Foreward Voltages Drops" and enter this "Total Voltage".







            D1       D2        D3            

                                             

           | /|     | /|      | /|           Resistor           Supply

        ___|/ |_____|/ |______|/ |______/\  /\  /\  /\  _______ 

    V-     |\ |     |\ |      |\ |        \/  \/  \/  \/          V+

           | \|     | \|      | \|
****************************************************************************

  

Enter Supply voltage Volts     [2-160 V]
Enter Diodes forward voltage Volts     [.5-159 V]
Enter Diodes rated current ma.       [2-50 ma]
Click Here to Calculate the:
Calculated resistance value Ohms
Next standard 5% resistor * Ohms
Resistor color markings
Power dissipated in LED('s) mw (if the exact calculated resistance value is used)
Power dissipated in resistor mw (Note: Your resistor wattage must exceed this value)




Copyright by Chemelec
Copyright © Jan/2003