41 lines
1.5 KiB
TeX
41 lines
1.5 KiB
TeX
% Author: Malte, DE7LMS
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% Year: 2021
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\begin{circuitikz}[
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thick,
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longL/.style = {american inductor, inductors/coils=5, inductors/scale=.7, inductors/width=1.25},
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every pin edge/.style={semithick, black}
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]
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% original for comparison
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% \node[anchor=south] at (0,-1.35) {\includegraphics[width=7cm]{tb_306_q_1.png}};
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\draw (-3.5,0) -- (3.5,0);
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\fill[top color=gray, bottom color=white] (-3.5,0) rectangle (3.5,-.25);
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\draw (0,0) node[circ] (gnd) {} to[longL] (0,5) node[circ] {};
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\foreach \x in {1.3,1.9,2.5} {
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% right
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\draw
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(0,5) arc[start angle=180, end angle=0, x radius=\x/2, y radius=.3*\x] -- (\x,0);
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\draw[dash pattern=on 10pt off 5pt]
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(\x,0) arc[start angle=180, end angle=0, x radius=-\x/2, y radius=-.3*\x];
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% left
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\draw
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(0,5) arc[start angle=0, end angle=180, x radius=\x/2, y radius=.3*\x] -- (-\x,0);
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\draw[dash pattern=on 10pt off 5pt]
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(-\x,0) arc[start angle=0, end angle=180, x radius=-\x/2, y radius=-.3*\x];
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}
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% Using Bézier curves looks more pleasing but is less correct
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% \foreach \x/\y in {-2.5/1,-1.9/.7,-1.3/.5,1.3/.5,1.9/.7,2.5/1}
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% \draw (0,5) .. controls +(0,\y) and +(0,\y) .. (\x,5)
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% -- (\x,0)
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% .. controls +(0,-\y) and +(0,-\y) .. (0,0);
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% X marks the spot
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\node[coordinate, pin=0:X] at (2.5,3.5) {};
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\foreach \x in {1.3,1.9,2.5}
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\draw[dash pattern=on 10pt off 5pt] (0,2.5) circle[x radius=\x, y radius=\x/2.5];
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\node[below=.2 of gnd, fill=white, inner sep=1pt] {Erde};
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\end{circuitikz} |