\[ R = \frac{V_{supply} - V_{LED}}{I_{LED}} \]
\[ P = (V_{supply} - V_{LED}) \times I_{LED} \]
Series LED Resistor Calculator
Features:
- Calculate the required resistor value for LED circuits
- Support for various voltage and current units
- Power calculation for proper resistor selection
- Reference table for common LED forward voltages
- Visual diagram of LED circuit configuration
- Calculate the required resistor value for LED circuits
- Support for various voltage and current units
- Power calculation for proper resistor selection
- Reference table for common LED forward voltages
- Visual diagram of LED circuit configuration
Formula
Typical LED Forward Voltage (Vf)
| LED Color | Typical Vf (V) |
|---|---|
| Red | 1.8 - 2.1 |
| Amber | 2.0 - 2.2 |
| Orange | 1.9 - 2.2 |
| Yellow | 1.9 - 2.2 |
| Green | 2.0 - 3.1 |
| Blue | 3.0 - 3.7 |
| White | 3.0 - 3.4 |