Thevenin Equivalent Calculator Formula
Understand the math behind the thevenin equivalent calculator. Each variable explained with a worked example.
Formulas Used
Thevenin Voltage
v_th = v_source * r2 / (r1 + r2)Thevenin Resistance
r_th = r1 * r2 / (r1 + r2)Variables
| Variable | Description | Default |
|---|---|---|
v_source | Source Voltage(V) | 24 |
r1 | Series Resistance R1(Ω) | 1000 |
r2 | Load-side Resistance R2(Ω) | 2000 |
How It Works
Thevenin's Theorem
Any linear circuit can be replaced by V_th in series with R_th.
Formulas
V_th = V_s x R2 / (R1 + R2)
R_th = R1 || R2 = R1 x R2 / (R1 + R2)
Worked Example
24 V source, R1 = 1k, R2 = 2k.
v_source = 24r1 = 1000r2 = 2000
- 01V_th = 24 x 2000 / 3000 = 16.0 V
- 02R_th = 1000 x 2000 / 3000 = 666.67 ohms
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Open Thevenin Equivalent Calculator