CurrentLimiterResistorCalculator

How to Use the Calculator

1. Enter the supply voltage in volts (V) in the "Supply Voltage" field.
2. Enter the desired current in amperes (A) in the "Desired Current" field.
3. Click the "Calculate" button to compute the resistor value.
4. The calculated resistor value in ohms (Ω) will be displayed in the "Resistor Value" field.

Working Principle

The CurrentLimiterResistorCalculator uses Ohm's Law to determine the appropriate resistor value for current limiting. Ohm's Law states that the voltage across a resistor is equal to the current through the resistor multiplied by the resistance value (V = I * R). By rearranging the formula, the resistor value can be calculated as R = V / I, where V is the supply voltage and I is the desired current.

Example

If you have a supply voltage of 12V and you want to limit the current to 2A, the resistor value required would be:

R = 12V / 2A = 6Ω