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LED calculator

Page history last edited by Kristin Lucas 15 years, 7 months ago

Goto the LED calculator website.

Enter the voltage of your power source. If you are using a 9V battery, enter 9 under Source voltage.

Enter the voltage of your LED. A standard LED (light emitting diode) is generally 2V 20mA.

Screenshot of program:

Resistor values:

1000 ohms equals 1K

1000K = 1M or one mega ohm

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