Element Types Reference

Resistor (R)

Resists the flow of charge. Models Ohmic resistance.

R0        → [R0]        → 80Ω typical

• Parameters: 1
• Unit: Ohm (Ω)
• DSL code: R

Capacitor (C)

Stores charge electrostatically. Models double-layer capacitance.

C1        → [ C1 ]
            ───    ───

• Parameters: 1
• Unit: Farad (F)
• DSL code: C

Inductor (L)

Stores energy in a magnetic field. Models inductive behavior.

L2        → ( L2 )
            ~~~~

• Parameters: 1
• Unit: Henry (H)
• DSL code: L

CPE (Q)

Constant Phase Element. Models non-ideal capacitance.

Q0        → [ Q0 ]
            ───/\/\──

• Parameters: 2
• Units: Q₀ (S·sⁿ), n (dimensionless)
• DSL code: Q
• Range: 0 < n ≤ 1

Warburg Infinite (W)

Semi-infinite linear diffusion. Phase angle = 45°.

W2        → [ W2 ]
            ~~~~/\/\/\/~~

• Parameters: 1
• Unit: σ (Ω·s⁻½)
• DSL code: W

Warburg Short (Ws)

Finite diffusion layer, transmissive boundary.

Ws0       → [Ws0]
           ~~~~/\/~~

• Parameters: 2
• Units: Y₀ (S·s½), B (s½)
• DSL code: Ws

Warburg Open (Wo)

Finite diffusion layer, reflecting boundary.

Wo1       → [Wo1]
           ~~/\/\/~~

• Parameters: 2
• Units: Y₀ (S·s½), B (s½)
• DSL code: Wo

Gerischer (G)

Diffusion-reaction impedance with a finite reaction rate.

G0        → [ G0 ]
            reaction + diffusion

• Parameters: 2
• Units: Y₀ (S·s½), K (s⁻¹)
• DSL code: G

Parallel Diffusion Warburg (Pdw)

Two parallel solid-state diffusion paths with a weighting factor. This matches the PDW element used by velo-spectroz literature reproduction.

Pdw0      → [Pdw0]
            diffusion path 1 ∥ diffusion path 2

• Parameters: 4
• Units: D1 (cm²/s), D2 (cm²/s), theta (dimensionless), Lambda (mol/cm³)
• DSL code: Pdw

ELEMENT_KINDS Table

Code	Label	Parameters
R	Resistor	1
C	Capacitor	1
L	Inductor	1
Q	CPE	2
W	Warburg Infinite	1
Ws	Warburg Short	2
Wo	Warburg Open	2
G	Gerischer	2
Pdw	Parallel Diffusion Warburg	4