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50ohm-contents-dl/contents/drawings/761.tex
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% Author: Prof. Dr. Matthias Jung
% Year: 2023
\begin{circuitikz}[european]
\ctikzset{
resistors/scale=\getDarcImageFactor,
capacitors/scale=\getDarcImageFactor,
inductors/scale=\getDarcImageFactor,
diodes/scale=\getDarcImageFactor,
transistors/scale=\getDarcImageFactor
}
\draw(0,0) coordinate(u0)
to [short, -*] ++(2,0) coordinate(u1)
to [short, -*] ++(2,0) coordinate(u2)
to [short, -*] ++(2,0) coordinate(u3)
to [short, -*] ++(2,0) coordinate(u4)
to [short, -o] ++(4,0) coordinate(u6)
node[anchor=north](){--};
\draw(0,0)
to [american inductor, ] ++(0,4) coordinate(o0)
to [short, -*] ++(2,0) coordinate(o1)
to [short, -*] ++(2,0) coordinate(o2)
to [short, -*] ++(2,0) coordinate(o3)
to [C, -*] ++(2,0) coordinate(o4)
to [short ] ++(1,0)
node [npn, tr circle, anchor=B](T){};
% Füllung
\draw (u1) to [variable capacitor, tunable end arrow={Triangle}] (o1);
\draw (u2) to [variable capacitor, tunable end arrow={Bar}] (o2);
\draw (o3)
to [C, l_=$C_1$] ++(0,-2) coordinate(m3)
to [C, l_=$C_2$, *-] (u3);
\draw(o4)
to [short] (o4|-m3)
to [R] (u4);
\draw(T.E)
to [short,-*] (T.E|-m3) coordinate(m5)
to [R, -*] (m5|-u4)
node[rground](){};
\draw(m3)
to [short] (m5)
to [C, -o] (m5-|u6);
\draw(o4)
to [R, -*] ++(0,3) coordinate(g4)
to [short, -*] (g4-|T.C) coordinate(g5)
to [short] (T.C);
\draw(g5)
to [R, -o] (g5-|u6)
node[anchor=south](){+};
\draw(g4)
to [short, -*] ++(-2,0) coordinate(g3)
to [short, -*] ++(-2,0) coordinate(g2)
to [short ] ++(-2,0) coordinate(g1)
to [C, name={myC}] ++(0,-2)
to [short, -*] ++(+2,0) coordinate(i2)
node[rground](){}
to [short ] ++(+2,0) coordinate(i3)
to [stroke Zener diode] (g3);
\draw(g2)
to [C] (i2);
\draw (myC.south west) node[anchor=south]{$+$};
\end{circuitikz}