135 lines
3.5 KiB
TeX
135 lines
3.5 KiB
TeX
% Author: Prof. Dr. Matthias Jung, DL9MJ
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% Year: 2026
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\begin{tikzpicture}
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\begin{scope}
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\begin{axis}[
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axis lines=center,
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axis line style={-Triangle},
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scale only axis,
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axis on top,
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height=2.2cm,
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width=\linewidth*\getDarcImageFactor,
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xmin=0,
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xmax=24*pi,
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ymin=-1.15,
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ymax=1.45,
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ticks=none,
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xlabel={$t$},
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xlabel style={anchor=north},
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ylabel={$U$},
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ylabel style={anchor=east},
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clip=false,
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]
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% Input signal: f = 1.1 kHz
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% 2*pi on the x-axis corresponds to 1 ms
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\addplot[
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smooth,
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mark=none,
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DARCblue,
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thick,
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domain=0:24*pi,
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samples=1800
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]
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{0.8*sin(deg(1.1*x))};
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% Gate boundaries: T_G = 1 ms
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\draw[dashed, thick]
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(axis cs:8.5*pi,-1.0)
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-- (axis cs:8.5*pi,1.15);
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\draw[dashed, thick]
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(axis cs:10.5*pi,-1.0)
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-- (axis cs:10.5*pi,1.15);
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% Gate-time arrow
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\draw[Triangle-Triangle, thick]
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(axis cs:8.5*pi,1.18)
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-- node[above] {kurze Torzeit $T_\mathrm{G}=\qty{1}{\milli\second}$}
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(axis cs:10.5*pi,1.18);
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% Counted positive zero crossing
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\foreach \k in {5}{
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\addplot[
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only marks,
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mark=*,
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mark size=1.8pt,
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DARCblue
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]
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coordinates {({20/11*\k*pi},0)};
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}
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\node[anchor=north]
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at (axis cs:9.5*pi,-1.0)
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{$N=1 \quad\Rightarrow\quad f_\mathrm{M}=\dfrac{N}{T_\mathrm{G}}=\qty{1}{\kilo\hertz}$};
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\end{axis}
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\end{scope}
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\begin{scope}[
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shift={(0,-3.4/\getDarcImageFactor)}
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]
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\begin{axis}[
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axis lines=center,
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axis line style={-Triangle},
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scale only axis,
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axis on top,
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height=2.2cm,
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width=\linewidth*\getDarcImageFactor,
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xmin=0,
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xmax=24*pi,
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ymin=-1.15,
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ymax=1.45,
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ticks=none,
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xlabel={$t$},
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xlabel style={anchor=north},
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ylabel={$U$},
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ylabel style={anchor=east},
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clip=false,
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]
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% Input signal: f = 1.1 kHz
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% 2*pi on the x-axis corresponds to 1 ms
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\addplot[
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smooth,
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mark=none,
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DARCblue,
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thick,
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domain=0:24*pi,
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samples=1800
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]
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{0.8*sin(deg(1.1*x))};
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% Gate boundaries: T_G = 10 ms
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\draw[dashed, thick]
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(axis cs:1*pi,-1.0)
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-- (axis cs:1*pi,1.15);
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\draw[dashed, thick]
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(axis cs:21*pi,-1.0)
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-- (axis cs:21*pi,1.15);
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% Gate-time arrow
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\draw[Triangle-Triangle, thick]
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(axis cs:1*pi,1.18)
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-- node[above] {lange Torzeit $T_\mathrm{G}=\qty{10}{\milli\second}$}
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(axis cs:21*pi,1.18);
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% Counted positive zero crossings
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\foreach \k in {1,...,11}{
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\addplot[
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only marks,
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mark=*,
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mark size=1.8pt,
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DARCblue
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]
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coordinates {({20/11*\k*pi},0)};
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}
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\node[anchor=north]
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at (axis cs:11*pi,-1.0)
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{$N=11 \quad\Rightarrow\quad f_\mathrm{M}=\dfrac{N}{T_\mathrm{G}}=\qty{1,1}{\kilo\hertz}$};
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\end{axis}
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\end{scope}
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\end{tikzpicture} |