% Author: Stephan Kregel, DG1HXJ
% Year: 2021
% TC620
\begin{circuitikz}[european]
    \draw (-1,0) to [C,l=$C_1$,o-] (1.0,0);
    \draw (5,-3) node[anchor=west]{$-$}
        to [short,o-] (3,-3)
        to [R,l=$R_\mathrm{E}$] (3,-1)
        to [Tnpn,name=npn,*-] (3,1)
        to [R,i<^=$I_\mathrm{C}$,l_=$R_\mathrm{C}$,-*] (3,3)
        to [short,-o] (5,3) node[anchor=west]{$+$};%
    \draw ($(npn)-(0.18,0)$) circle [radius=14pt];
    \draw (3,0.75) to [C,l_=$C_2$,*-o] (5,0.75); %
    \draw (4,-3) node[rground]{} to [open,*-*] (3,-3); %
    \draw (3,-1) -- (4,-1) to [C,l=$C_\mathrm{E}$] (4,-3); %
    \draw (-1,-3) to [short,o-*] (3,-3);
    \draw (0,2) node[rground]{} to [C] (0,3) -- (3,3);
    \draw (1,-3) to [R,l=$R_2$,*-*] (1,0) to [R,l_=$R_1$,*-*] (1,3);
    \draw (npn.B) to [short, i<_=$I_\mathrm{B}$](1,0);
    \draw (2,0) to [open, v=$\SI{0,6}{\V}$, voltage=straight] (3,-1) ;
\end{circuitikz}