Current Limiting Resistance Calculator

Calculate Current Limiting Resistance





Formula

The formula to calculate the current limiting resistance (R) is:

\[ R = \frac{V_s - V_f}{I_d} \]

Where:

Example

Let's say the supply voltage is 12 V, the forward voltage is 2 V, and the desired current is 0.02 A. Using the formula:

\[ R = \frac{12 - 2}{0.02} \]

We get:

\[ R = \frac{10}{0.02} = 500 \]

So, the current limiting resistance (\( R \)) is 500 Ω.

What is a Current Limiting Resistor?

A current limiting resistor is a resistor used to limit the amount of current that flows through a circuit. This is particularly important in circuits with LEDs or other components that can be damaged by excessive current. By placing a resistor in series with the component, the current is limited to a safe level, ensuring the longevity and proper functioning of the circuit. The value of the resistor is chosen based on the supply voltage, the forward voltage of the component, and the desired current.

Extended information about "Current-Limiting-Resistance-Calculator"

Resistance and Current Calculator

Formula: \( I = \frac{V}{R} \)

Example: \( I = \frac{12}{4} \)

Current Limit Resistor Calculator

Formula: \( R = \frac{V - V_f}{I} \)

Example: \( R = \frac{9 - 2}{0.02} \)

How to Calculate Current Resistance

Formula: \( R = \frac{V}{I} \)

Example: \( R = \frac{24}{0.5} \)

Current Limiting Resistor Formula

Formula: \( R = \frac{V - V_f}{I} \)

Example: \( R = \frac{12 - 3.3}{0.02} \)

Resistance Voltage Current Calculator

Formula: \( V = I \times R \)

Example: \( V = 0.5 \times 8 \)

To Get Maximum Current in a Resistance

Formula: \( I = \frac{V}{R} \)

Example: \( I = \frac{15}{3} \)

Resistance in Circuit Calculator

Formula: \( R = \frac{V}{I} \)

Example: \( R = \frac{18}{0.6} \)

Electric Circuit Resistance Calculator

Formula: \( R = \frac{V}{I} \)

Example: \( R = \frac{20}{0.8} \)

Calculating Voltage Current Resistance

Formula: \( V = I \times R \)

Example: \( V = 0.75 \times 10 \)

Minimum and Maximum Resistance Calculator

Formula: \( R_{\text{min}} = \frac{V_{\text{min}}}{I_{\text{max}}} \)

Example: \( R_{\text{min}} = \frac{10}{2} \)

Total Resistance of Circuit Calculator

Formula: \( R_{\text{total}} = R_1 + R_2 + \ldots + R_n \)

Example: \( R_{\text{total}} = 5 + 10 + 15 \)