% Author: Dr. Matthias Jung, DL9MJ % Year: 2021 \begin{circuitikz} \pgfdeclarelayer{bg} % declare background layer \pgfsetlayers{bg,main} \draw [dashed] (0,0) -- ++(0.55,0) coordinate(a); \draw (a) to [short,o-o] ++(0.5,0) coordinate(p); \begin{pgfonlayer}{bg} \draw[very thick ] (p) to [short] ++(1,0) coordinate(b); \end{pgfonlayer} \ctikzset{inductors/coils=2, inductors/scale=0.5, capacitors/scale=0.5} \draw(b) to [short, *-] ++(0,0.35); \draw(b) to [open] ++(0.5,0.35) arc(0:180:0.125) arc(0:180:0.125); \draw(b) to [open] ++(0.5,0.35) to [short] ++(0,-0.35); \draw(b) to [short] ++(0,-0.35) to [C] ++(0.5,0) to [short,-*] ++(0,+0.35) coordinate(q); \draw[very thick](q) to [short] ++(2,0) coordinate(x1) to [open] ++(0.5,0) coordinate(x2) to [short] ++(2,0) coordinate(c); \draw(c) to [short] ++(0,0.35); \draw(c) to [open] ++(0.5,0.35) arc(0:180:0.125) arc(0:180:0.125); \draw(c) to [open, *-] ++(0.5,0.35) to [short] ++(0,-0.35); \draw(c) to [short] ++(0,-0.35) to [C] ++(0.5,0) to [short,-*] ++(0,+0.35) coordinate(i); \draw[very thick](i) to [short] ++(1,0) coordinate(j); \draw(j) to [short,o-] ++(0.5,0) coordinate(d); \draw [dashed] (d) -- ++(0.55,0); \draw (d) to [short,-o] ++(0.0,0); \draw (x1) to [short, -*] ++(0,0) node[anchor=north]{X}; \draw (x2) to [short, -*] ++(0,0) node[anchor=north]{X}; \end{circuitikz}