Zsimpwin Tutorial «CERTIFIED — Workflow»

| Problem | Likely Cause | Fix | |---------|--------------|-----| | Fit does not converge | Bad initial guess | Estimate from graph manually | | Negative resistance | Wrong circuit topology | Remove serial R before parallel branch | | CPE exponent >1 | Inductive behavior | Add L element or restrict n ≤ 1 | | High χ² | Missing element (e.g., diffusion) | Add Warburg or Gerischer | | Fit changes drastically with weighting | Data noise | Increase low-frequency averaging |

If you were following a standard ZSimpWin tutorial, it would likely follow this exact structure. This serves as a mini-guide for you: zsimpwin tutorial