% Author: Malte, DE7LMS
% Year: 2022
\begin{circuitikz}
    \pgfdeclarelayer{bg} % declare background layer
    \pgfsetlayers{bg,main}
    \draw (.2,1.4) -- ++(0,-2);
    \draw (-.2,1.4) -- ++(0,-2);
  
    \draw[dashed] (0,1.2) -- ++(0,-1.8);
  
    \draw (.2,1.4) arc[start angle=0, end angle=360, x radius=.2, y radius=.1];
    \draw (.2,1.4-2) arc[start angle=0, end angle=-90, x radius=.2, y radius=.1] coordinate (bottom) arc[start angle=-90, end angle=-180, x radius=.2, y radius=.1];
    \draw (bottom) -- ++(0,-.2);
  
    \path (.2,1.4)
      arc[start angle=0, end angle=45, x radius=.2, y radius=.1] coordinate (up right)
      arc[start angle=45, end angle=135, x radius=.2, y radius=.1] coordinate (up left)
      arc[start angle=135, end angle=225, x radius=.2, y radius=.1] coordinate (down left)
      arc[start angle=225, end angle=315, x radius=.2, y radius=.1] coordinate (down right);
  
    \path (down right) ++(2,-1) coordinate (down right end);
    \path[very thick, shorten <=-1pt, {Circle[length=2pt]}-, line cap=round]
      (up right) edge +(2,1)
      (up left) edge +(-2,1)
      (down right) edge (down right end)
      (down left) edge +(-2,-1);
  
    \draw[very thick]
      (0,4) -- ++(0,-1.5) to [C, name=c1] (0,1.4);

    \begin{pgfonlayer}{bg}
        \DARCmeasure{down right}{down right end}{-0.15,-0.3}{-28}{$\frac{\lambda}{4}$}
        \draw(0,1.4) coordinate(end);
        \draw(0,4) coordinate(start);
        \DARCmeasure{start}{end}{-1.55,0}{-90}{\rotatebox{90}{$\text{mech.} > \frac{\lambda}{4}$}}
    \end{pgfonlayer} 
\end{circuitikz}