Calculateur de Dimensionnement de Fusible
Calculez la taille de fusible appropriée pour votre circuit.
V
Ω
Optimal Load Resistance
50.00 Ω
Maximum Power to Load0.5000 W
Efficiency at Max Transfer50%
Optimal Load Resistance vs Thevenin Voltage
Formule
Maximum Power Transfer Theorem
Max power is delivered when R_load = R_th.
Formulas
R_load = R_th
P_max = V_th^2 / (4 x R_th)
Efficiency is 50% at this point.
Exemple Résolu
V_th = 10 V, R_th = 50 ohms.
- 01R_load = R_th = 50 ohms
- 02P_max = 100 / 200 = 0.5 W
- 03Efficiency = 50%
Questions Fréquentes
Why only 50% efficient?
Equal power is dissipated in source and load when they are matched.
Is max power transfer always desired?
No. Power systems prioritize efficiency. Max power transfer matters in RF and signal work.
AC circuits?
Load impedance should be the complex conjugate of source impedance.
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