Triode Curve Fitter

Nelder-Mead Simplex Optimization for Vacuum Tube Parameter Extraction

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Data Import

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Model Selection

Ia = K · (Vgk + Da · Vak)3/2
E1 = (Vak/kP) · ln(1 + ekP(1/μ + Vgk/√(kVB + Vak²)))

Ia = (E1X / kG1) · (1 + sgn(E1))

Optimizer Settings

Results

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Curve Plot

SPICE Model Output

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