Gamry’s EIS Analysis features a simple-to-use automatic EIS model-fitting routine. It is based on the well-known Simplex non-linear least-squares fitting routine. Unlike older fit routines, it does not depend on… read more →
The Fit A Model (Simplex Method) command fits a data set to an equivalent-circuit model on your computer’s disk. The model can be one of the standard models supplied with… read more →
The Fit A Model (Levenberg-Marquardt Method) command fits a data set to an equivalent-circuit model stored on your computer’s disk. The model can be one of the standard models supplied… read more →
The Model Editor command gains access to the EIS software’s graphical model editor. The model editor is a separate program that runs in its own window. Use it to create… read more →
Filename Parameter Description Units Range RANDLES.MDL Ru Uncompensated Solution Resistance Ω 0 → ∞ Cf Double-layer Capacitance farad 0 → ∞ Rp Polarization Resistance Ω 0 → ∞ CPE.MDL Ru… read more →
Title – File Name – Description Randles RANDLES.MDL Simple Randles cell. The most common model used for bare metal in solution Diffusion Model OTCWAR.MDL One time-constant. A Warburg element models… read more →
There are three selections on the Model Editor menu bar: File and Tools. When you select File, a drop-down menu appears: New Clears the drawing area. The previous contents of… read more →
There are parameter labels below the symbol of each element in a model. By default, the parameter labels are those traditionally associated with an element, e.g., C for a capacitor,… read more →
You can remove circuit elements, including wires, from the drawing area by dragging them to the trash can icon. The point on the end of the mouse cursor must point… read more →
The lower portion of the model editor screen is blank except for two symbols labeled W.E. and R.E. This area is the drawing area. You draw the schematic diagram for… read more →