% Author: Prof. Dr. Matthias Jung, DL9MJ
% Year: 2023
\begin{circuitikz}
    \draw(-0.5,0) node[left]{$0$};
    \draw(-0.5,+2.50) node[left]{$+$};
    \draw(-0.5,-2.75) node[left]{$-$};
    \draw[-Triangle] (-0.5,0) -- ++(9.0,0.0) node[below left]{$t$};
    \draw[-Triangle] (0.0,-2.75) -- (0.0,2.5);
    \draw[ultra thick, black] (0,0)
        sin ++(1,+2) cos ++(1,-2)
        sin ++(1,-2) cos ++(1,+2)
        sin ++(1,+2) cos ++(1,-2)
        sin ++(1,-2) cos ++(1,+2);
    \draw[thick, Triangle-Triangle, DARCblue] (0,3) -- (4,3);
    \draw[thick, Triangle-Triangle, DARCblue] (4,3) -- (8,3);
    \draw[DARCblue](2,3) node[above]{Periode};
    \draw[DARCblue](6,3) node[above]{Periode};
\end{circuitikz}