Maximum Power Transfer Calculator
Find the load resistance for maximum power delivery and the maximum power from a Thevenin source.
V
Ω
Optimal Load Resistance
50.00 Ω
Maximum Power to Load0.5000 W
Efficiency at Max Transfer50%
Optimal Load Resistance vs Thevenin Voltage
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.
Example Calculation
V_th = 10 V, R_th = 50 ohms.
- 01R_load = R_th = 50 ohms
- 02P_max = 100 / 200 = 0.5 W
- 03Efficiency = 50%
Frequently Asked Questions
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