Calculateur d'Équivalent de Thévenin
Calculez le circuit équivalent de Thévenin.
V
Ω
Ω
Ω
Ω
Bridge Voltage
0.0000 V
Ratio R1/R31.0000
Ratio R2/R41.0000
Bridge Voltage vs Supply Voltage
Formule
Wheatstone Bridge Analysis
A Wheatstone bridge measures unknown resistance by balancing two divider legs.
Formula
V_bridge = V_s x [R3/(R1+R3) - R4/(R2+R4)]
Balanced when R1/R3 = R2/R4 (bridge voltage = 0).
Exemple Résolu
10 V supply, R1=R3=1k, R2=R4=2k.
- 01Left: R3/(R1+R3) = 1000/2000 = 0.5
- 02Right: R4/(R2+R4) = 2000/4000 = 0.5
- 03V_bridge = 10 x (0.5 - 0.5) = 0 V (balanced)
Questions Fréquentes
What does balanced mean?
Bridge voltage is zero and no current flows through the galvanometer.
What is it used for?
Precision resistance measurement, strain gauges, load cells, and temperature sensors.
Can bridge voltage be negative?
Yes, indicating reversed polarity compared to the assumed direction.
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