Quick
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LED Protection Resistor Calculator
Example: To calculate the value of resistor needed by the Super Bright LED below: 1,
To begin, look at the LED's values for Vs,
Vf and If in the red table
below. |
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Try
the example
-Super Bright LED- |
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Battery
Vs
(volts) |
Vf
(volts) |
If
(milliamps) |
3mm
red LED
|
12
|
2.1
|
30
|