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50ohm-contents-dl/contents/drawings/192.tex
T
SuperminarenandClaude Sonnet 5.5 f7fa8cfbc1 Swedish adaptation: Instegscertifikat and HAREC content
- Sections and slides rewritten in Swedish; German law and institutions replaced by
  Swedish/CEPT/ITU equivalents (PTS, SSA, PTSFS 2025:1, SSMFS 2008:18), unverified
  statements marked "% TODO VERIFY"
- New toc: INSTEG, HAREC, UPPGRADERING; section idents are Swedish (see ident-map.tsv)
- Exam-question tags, BNetzA question pool, solutions and the German SWL course removed
- Static pages, snippets, applets, READMEs and image alt-texts translated
- TikZ labels translated; SVG drawings regenerated (drawing 689 still fails to build
  upstream: it references a missing photo)
- Changed from the original: not endorsed by DARC e.V., SSA or PTS

Co-Authored-By: Claude Sonnet 5.5 <[email protected]>
2026-10-10 15:03:03 +02:00

42 lines
1.6 KiB
TeX

% Author: Malte, DE7LMS
% Year: 2021
\begin{circuitikz}[
thick,
longL/.style = {american inductor, inductors/coils=5, inductors/scale=.7, inductors/width=1.25},
every pin edge/.style={semithick, black}
]
% original for comparison
% \node[anchor=south] at (0,-1.35) {\includegraphics[width=7cm]{tb_407_q_1.png}};
\draw (-3.5,0) -- (3.5,0);
\fill[top color=gray, bottom color=white] (-3.5,0) rectangle (3.5,-.25);
\draw (0,0) node[circ] (gnd) {} to[longL] (0,5) node[circ] {};
\foreach \x in {1.3,1.9,2.5} {
% right
\draw
(0,5) arc[start angle=180, end angle=0, x radius=\x/2, y radius=.3*\x] -- (\x,0);
\draw[dash pattern=on 10pt off 5pt]
(\x,0) arc[start angle=180, end angle=0, x radius=-\x/2, y radius=-.3*\x];
% left
\draw
(0,5) arc[start angle=0, end angle=180, x radius=\x/2, y radius=.3*\x] -- (-\x,0);
\draw[dash pattern=on 10pt off 5pt]
(-\x,0) arc[start angle=0, end angle=180, x radius=-\x/2, y radius=-.3*\x];
}
% Using Bézier curves looks more pleasing but is less correct
% \foreach \x/\y in {-2.5/1,-1.9/.7,-1.3/.5,1.3/.5,1.9/.7,2.5/1}
% \draw (0,5) .. controls +(0,\y) and +(0,\y) .. (\x,5)
% -- (\x,0)
% .. controls +(0,-\y) and +(0,-\y) .. (0,0);
% X marks the spot
\path (-1.9,2.5) arc[start angle=180, end angle=75, x radius=1.9, y radius=1.9/2.5]
node[coordinate, pin=70:X] {};
\foreach \x in {1.3,1.9,2.5}
\draw[dash pattern=on 10pt off 5pt] (0,2.5) circle[x radius=\x, y radius=\x/2.5];
\node[below=.2 of gnd, fill=white, inner sep=1pt] {Jord};
\end{circuitikz}