  \centerline{%
    \begin{tikzpicture}[scale=0.7,>=latex]
      \fill[gray!60] (1.2,0) -- (1.2,-1.1635) -- (2.5962,0);
      %\node (IN) at (2.2,1.3) {\small $q$};
      %
      \draw (0,0.3375) -- (1.2,0.3375) -- (1.2,-1.1635) -- (3.0,0.3375) -- (4,0.3375);
      %
      % horizontal axis
      \draw[->] (-0.2,0) -- (0.5+4,0) node[right] {$t$};
      \node at (1.3,0.7) {$T_1$};
      \draw (2.5962,0) -- (2.5962,-0.2);
      \node at (2.5962,-0.7) {$T_x$};
      \draw (3.0,0) -- (3.0,-0.2);
      \node at (3.2,-0.7) {$T_2$};
      \draw (4.0,0) -- (4.0,-0.2);
      \node at (4.0,-0.7) {$T_s$};
      % vertical axis
      \draw[->] (0,-2.7) -- (0,2.5) node[above] {$i_C(t)$};
      \draw (0,-1.1635) -- (-0.1,-1.1635) node[anchor=east] {$-\max i_L - I_{ut}$};
      \draw (0.0,0.3375) -- (-0.1,0.3375) node[anchor=south east] {$-I_{ut}$};
      \node at (2.5,2) {\textbf{I}};
    \end{tikzpicture}
    \ind{15mm}
    \begin{tikzpicture}[scale=0.7,>=latex]
      \fill[gray!60] (0,0) -- (1.6,0) -- (1.6,1.6875) -- (0,1.6875);
      %\fill[gray!60] (1.6,0) -- (1.6,-2.5) -- (4.0,-0.5) -- (4,0);
      \draw (0,1.6875) -- (1.6,1.6875) -- (1.6,-2.5) -- (4.0,-0.5) -- (4,1.6875);
      % horizontal axis
      \draw[->] (-0.2,0) -- (0.5+4,0) node[right] {$t$};
      % vertical axis
      \draw[->] (0,-2.7) -- (0,2.5) node[above] {$i_C(t)$};
      \draw (0,-2.5) -- (-0.1,-2.5) node[anchor=east] {$-\max i_L - I_{ut}$};
      \draw (0.0,-0.5) -- (-0.2,-0.5) node[anchor=east] {$-\min i_L - I_{ut}$};
      \draw (0.0,1.6875) -- (-0.1,1.6875) node[anchor=east] {$-I_{ut}$};
      \node at (2.5,2) {\textbf{II}};
    \end{tikzpicture}
  }
  \caption{Strömmar över kondensatorn}
