% Author: Prof. Dr. Matthias Jung, DL9MJ % Year: 2026 \begin{circuitikz} \draw(0,0) to [open] ++(2,0) coordinate (x0); \draw[-Triangle, DARCred](x0) -- ++(1,0) node[midway, above] {$R$} coordinate (x1); \draw[-Triangle, DARCblue](x1) -- ++(0,1) node[midway, right] {$X$} coordinate (x2); \draw[-Triangle, DARCgreen](x0) -- (x2) node[midway, above left] {$Z$}; \draw(x1) to [open] ++(2,0); \end{circuitikz}