Voltage Divider Calculator
Compute output voltage across resistors in a series circuit
Calculator
Enter input voltage and the values of two series resistors to calculate the output voltage.
About the Voltage Divider Calculator
The Voltage Divider Calculator allows you to quickly compute the output voltage (Vout) across resistors in a series circuit. This tool is essential for electronics enthusiasts, students, and engineers who need precise calculations for voltage drops and circuit design.
How It Works
Enter the input voltage (Vin) and the resistor values (R1 and R2). The calculator uses the standard voltage divider formula to compute the output voltage across the resistor:
- Formula: Vout = Vin × R2 / (R1 + R2)
- Vin = input voltage applied to the series resistors
- R1 = first resistor in series
- R2 = second resistor in series (across which Vout is measured)
Applications of Voltage Dividers
Voltage dividers are widely used in electronics and electrical engineering for the following purposes:
- Signal scaling: Reduce voltage levels for sensors or microcontroller inputs.
- Biasing circuits: Provide reference voltages for transistors or op-amps.
- Voltage measurement: Measure high voltages safely by scaling them down.
- LED circuits: Control current and voltage across LEDs and small components.
- Analog-to-digital conversion: Scale voltages to fit the input range of ADCs.