Voltage Divider Calculator

How to Use the Voltage Divider Calculator

This voltage divider calculator helps you determine the output voltage in a voltage divider circuit. You can calculate the output voltage when you know the input voltage and the values of the two resistors in the circuit.

Voltage Divider Formula

The formula used to calculate the output voltage in a voltage divider circuit is:

\[V_{out} = V_{in} \times \frac{R_2}{R_1 + R_2}\]

Where:

• V_out is the output voltage
• V_in is the input voltage
• R₁ is the resistance of the first resistor
• R₂ is the resistance of the second resistor

Calculation Steps

1. Enter the input voltage (V_in)
2. Enter the value of the first resistor (R₁)
3. Enter the value of the second resistor (R₂)
4. Click the "Calculate" button
5. The calculator will determine the output voltage using the voltage divider formula

Example Calculation

Let's walk through an example calculation using our Voltage Divider Calculator:

Scenario:

Given:

• Input Voltage (V_in) = 12 V
• Resistor 1 (R₁) = 1000 Ω
• Resistor 2 (R₂) = 2000 Ω

Step 1: Apply the voltage divider formula

\[V_{out} = 12 \text{ V} \times \frac{2000 \text{ Ω}}{1000 \text{ Ω} + 2000 \text{ Ω}}\]

Step 2: Calculate the result

\[V_{out} = 12 \text{ V} \times \frac{2000 \text{ Ω}}{3000 \text{ Ω}} = 8 \text{ V}\]

Therefore, the output voltage in this voltage divider circuit is 8 V.

Voltage Divider Circuit Diagram

This diagram illustrates a basic voltage divider circuit. The input voltage (V_in) is applied across two resistors (R1 and R2) connected in series. The output voltage (V_out) is measured across R2, which is a fraction of the input voltage determined by the ratio of the resistors.