% Author:	Dr. Matthias Jung, DL9MJ
%			Stephan Kregel, DG1HXJ
% Year: 2022
\begin{circuitikz}[american]
    \tikzset{%
        circuitikz/resistors/scale=\getDarcImageFactor,
        circuitikz/sources/scale=\getDarcImageFactor
    }	
    \draw (0,0) coordinate(I1) to [sV, l2={$R_\mathrm{i}$} and \qty{50}{\ohm}, name={gen}] ++(0,3) coordinate(I2) ;
    \draw (I2) 
        to[short,-o] ++(0.5,0)
        node[anchor=south](foo) {a}
        to [european resistor, l={$R_\mathrm{1}$}] ++(3,0) coordinate(C1);
    \draw (C1)
        to [european resistor, l={$R_\mathrm{3}$}] ++(3,0)
        to [european resistor, l={$R_\mathrm{L}$}, name={h3}] ++ (0,-3) 
        to [short] (I1);
    \draw(C1) to [european resistor, l_={$R_\mathrm{2}$}, *-*] ++(0,-3) coordinate(h1);
    \draw (h1) node[anchor=north](){Dämpfungsglied};
    \draw(I1-|foo)
        node[ocirc](){}
        node[anchor=north](){b};
\end{circuitikz}