Wheatstone Bridge Calculator | Resistance Tool

The Wheatstone Bridge Calculator allows you to determine the value of an unknown resistor in a bridge circuit configuration. By inputting the known resistor values, this tool quickly computes the unknown resistance using the Wheatstone bridge principle.

EXAMPLE:

• INPUTS:

  • Resistor R1 : 100 Ohms
  • Resistor R2 : 200 Ohms
  • Resistor R3 : 50 Ohms
  • Input Voltage (Vin) : 10 Volts

• OUTPUT:

  • Unknown Resistor Rx = 100 Ohms
  • Output Voltage (Vout) = 0 Volts

Wheatstone Bridge Formula

Where,

• R1, R2, R3 = Known Resistor values (Ohms)
• Rx = Unknown Resistor value (Ohms)

The formula for differential output voltage (Vout) is given by:

$Vout = Vin \left( \frac{R2}{R1 + R2} - \frac{Rx}{R3 + Rx} \right)$

Where, Vin = Input Voltage (Volts) Vout = Output Voltage (Volts)

Key benefits of Using the Wheatstone Bridge Calculator

• Precision : Accurately calculates unknown resistance values.
• Efficiency : Saves time compared to manual calculations.
• User-Friendly : Simple interface for easy input and output interpretation.
• Educational Tool : Aids in understanding bridge circuit principles.

References

• Wheatstone Bridge - Wikipedia
• Bird, J. (2017). Electrical Circuit Theory and Technology. Routledge.
• Hughes, E. (2013). Electrical and Electronic Technology. Pearson Education.