Voltage Divider Calculator

This tool helps you calculate the output voltage of a voltage divider circuit, commonly used in electronic circuits to obtain a desired voltage from a higher voltage source.

Voltage Divider Inputs

Results

Output Voltage (V) 0.00

Authoritative Data Source and Methodology

All calculations are based on the standard voltage divider formula used in circuit analysis, as detailed in the following source: Wikipedia - Voltage Divider. All calculations strictly adhere to the formulas and data provided by this source.

The Formula Explained

\( V_{\text{out}} = V_{\text{in}} \times \frac{R2}{R1 + R2} \)

Glossary of Variables

How It Works: A Step-by-Step Example

Suppose you have an input voltage of 9V and you want a 3V output. If R1 is 2kΩ and R2 is 1kΩ, then according to the formula, the output voltage will be:

\( V_{\text{out}} = 9 \times \frac{1}{2 + 1} = 3V \)

Frequently Asked Questions (FAQ)

What is a voltage divider?

A voltage divider is a simple circuit that turns a large voltage into a smaller one using two series resistors.

How do I use the voltage divider calculator?

Enter the input voltage and the values for the resistors to compute the output voltage.

What are practical applications of a voltage divider?

They are used in adjusting signal levels, biasing active devices in amplifiers, and measuring voltages.

Can I use a voltage divider for high power applications?

Voltage dividers are not ideal for high power applications as they can dissipate a lot of heat.

How accurate is the voltage divider calculator?

The calculator is accurate as long as the resistor values are precise and the load is negligible.

Tool developed by Ugo Candido. Content verified by our expert engineering team. Last reviewed for accuracy on October 1, 2023.
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