% Author:   Dr. Matthias Jung, DL9MJ
%           Stephan Kregel, DG1HXJ
% Year: 2022
\begin{circuitikz}[american]
    \draw(0,0) coordinate(u0)
        to [short, o-*] ++(4,0) coordinate(u2)
        to [short,  -*] ++(2,0) coordinate(u3)
        to [short,  -*] ++(1,0) coordinate(u4)
        to [short, *-o] ++(1,0) coordinate(u5);

    \draw(u0)
        to [open, name={h1}] ++(0,3)
        to [L, o-, name={l1}] ++(2.5,0) coordinate(o1)
        to [C, -*,] ++(1.5,0) coordinate(o2)
        to [C,  -*] ++(2,0) coordinate(o3)
        to [short,  -*] ++(1,0) coordinate(o4)
        to [short, *-o] ++(1,0) coordinate(o5);

    \draw(o2)
        to [short] ++(0,1) coordinate(h2)
        to [european resistor, -o] (h2-|u5)
        node [anchor=south](){+};

    \draw(o2)
        to [stroke diode, invert, name={d1}] (u2);

    \draw (d1.north west) ++(0.25,0) to [C, /tikz/circuitikz/bipoles/length=0.4cm] ($(d1.north east)+(0.25,0)$);


    \draw(o3)
        to [vC, tunable end arrow={Bar}, invert] (u3);

    \draw(o4)
        to [L] (u4);

    \draw(o5)
        to [open, name={h3}] (u5);
    
    \draw (h1.center) node[rotate=90]{\footnotesize LF/basband};
    \draw (h3.center) node[rotate=90]{\footnotesize till oscillatorn};

    \draw[dashed](l1.core west) -- (l1.core east);
\end{circuitikz}