% Author: Dr. Matthias Jung, DL9MJ
% Year: 2026
\begin{circuitikz}
    \draw(0,0) coordinate(start)
        to [solar, invert, mirror, name={sol1}] ++(0,1) coordinate(x1)
        to [open]  ++(0,1) coordinate(x2)
        to [solar, invert, mirror] ++(0,1)
        to [solar, invert, mirror] ++(0,1)
        to [short, i_={\qty{1}{\ampere}}] ++(0,1) coordinate(end1);
    \draw[dashed] (x1) -- (x2) node[midway, right] {30 St.};
    %
    \draw(start)
        to [short, -*] ++(1,0) coordinate(start2)
        to [solar, invert, mirror] ++(0,1) coordinate(x1)
        to [open]  ++(0,1) coordinate(x2)
        to [solar, invert, mirror] ++(0,1)
        to [solar, invert, mirror] ++(0,1)
        to [short, i_={}] ++(0,1) coordinate(end2);
    \draw[dashed] (x1) -- (x2);
    %
    \draw(start2)
        to [short, -*] ++(1,0) coordinate(start3)
        to [solar, invert, mirror] ++(0,1) coordinate(x1)
        to [open]  ++(0,1) coordinate(x2)
        to [solar, invert, mirror] ++(0,1)
        to [solar, invert, mirror] ++(0,1)
        to [short, i_={}] ++(0,1) coordinate(end3);
    \draw[dashed] (x1) -- (x2);
    %
    \draw(start3)
        to [short, -*] ++(1,0) coordinate(start4)
        to [solar, invert, mirror] ++(0,1) coordinate(x1)
        to [open]  ++(0,1) coordinate(x2)
        to [solar, invert, mirror] ++(0,1)
        to [solar, invert, mirror] ++(0,1)
        to [short, i_={}] ++(0,1) coordinate(end4);
    \draw[dashed] (x1) -- (x2);
    %
    \draw(sol1.west) node[anchor=south east](){$\qty{0,6}{\volt}$};
    %
    \draw(start4)
        to [short, -o] ++(1,0) coordinate(start5)
        to [open, v^<={$U$}] (start5 |- end4) coordinate(end5) 
        to [short, o-*] (end4)
        to [short,  -*] (end3)
        to [short,  -*] (end2)
        to [short,  - ] (end1);
    %
    \draw(start5)
        to [short, o-] ++(0.5,0) coordinate(start6)
        to [R, i<={$I~$}] (start6|-end5)
        to [short, -o] (end5);
\end{circuitikz}