Circuitikz電壓源美式

Circuitikz電壓源美式

我對 Circuitikz 中的一個特定元件(電壓源)有疑問。

當我水平放置這個元件在電路上時,(−)和(+)符號也會旋轉,但這種行為是不對的,由於電壓源的旋轉,(−)符號變成了可怕的(|) 。對於任何旋轉角度的傾斜電壓源,都會發生相同的情況,例如,當旋轉45°時,電壓源的(+)符號看起來更像是(×)等等。

我想知道的是,是否可以獲得電壓源的非旋轉極性符號,即與電壓源旋轉無關?

就像書一樣,它們完美地展示了美國電壓源以任何角度旋轉,而無需改變極性符號的位置。 (我可以使用歐洲風格,但這些人不習慣,他們可能會感到困惑)。

提前致謝。 ☺

答案1

電路

\documentclass{article}
\usepackage{circuitikz}

%% Independent voltage source - American style

\makeatletter
\pgfcircdeclarebipole{}{\ctikzvalof{bipoles/vsourceam/height}}{vsourceAM}{\ctikzvalof{bipoles/vsourceam/height}}{\ctikzvalof{bipoles/vsourceam/width}}{

    \pgfsetlinewidth{\pgfkeysvalueof{/tikz/circuitikz/bipoles/thickness}\pgfstartlinewidth}

    \pgfpathellipse{\pgfpointorigin}{\pgfpoint{0}{\pgf@circ@res@up}}{\pgfpoint{\pgf@circ@res@left}{0}}
    \pgfusepath{draw}
    \pgfscope
        \pgftransformxshift{\ctikzvalof{bipoles/vsourceam/margin}\pgf@circ@res@left}
        \pgftext[rotate=-\pgf@circ@direction]{$-$}
        \pgfusepath{draw}
    \endpgfscope
    \pgfscope
        \pgftransformxshift{\ctikzvalof{bipoles/vsourceam/margin}\pgf@circ@res@right}
        \pgftext[rotate=-\pgf@circ@direction]{$+$}
        \pgfusepath{draw}
    \endpgfscope
}
\makeatother

\begin{document}

\begin{circuitikz}[american voltages]

\ctikzset{bipoles/vsourceam/margin=.5}% default too big

\draw (0,0) to[V={v1}] (3,0) to[V={v2}] (3,3) to[V={v3}] (0,3) to[V={v4}] (0,0);
\draw (4,0) to[V={v5}] (6,2);
\end{circuitikz}

\end{document}

對於受控電壓源,您可以使用

%% Controlled voltage source - American

\makeatletter
\pgfcircdeclarebipole{}{\ctikzvalof{bipoles/cvsourceam/height}}{cvsourceAM}{\ctikzvalof{bipoles/cvsourceam/height}}{\ctikzvalof{bipoles/cvsourceam/width}}{

    \pgfsetlinewidth{\pgfkeysvalueof{/tikz/circuitikz/bipoles/thickness}\pgfstartlinewidth}

      \pgfpathmoveto{\pgfpoint{\pgf@circ@res@left}{\pgf@circ@res@zero}}
        \pgfpathlineto{\pgfpoint{\pgf@circ@res@zero}{\pgf@circ@res@up}}
        \pgfpathlineto{\pgfpoint{\pgf@circ@res@right}{\pgf@circ@res@zero}}
        \pgfpathlineto{\pgfpoint{\pgf@circ@res@zero}{\pgf@circ@res@down}}
        \pgfpathlineto{\pgfpoint{\pgf@circ@res@left}{\pgf@circ@res@zero}}
        %\pgftext[bottom,rotate=90,y=\ctikzvalof{bipoles/cvsourceam/margin}\pgf@circ@res@left]{$+$}
        %\pgftext[top,rotate=90,y=\ctikzvalof{bipoles/cvsourceam/margin}\pgf@circ@res@right]{$-$}
        \pgfusepath{draw}
    \pgfscope
        \pgftransformxshift{\ctikzvalof{bipoles/vsourceam/margin}\pgf@circ@res@left}
        \pgftext[rotate=-\pgf@circ@direction]{$-$}
        \pgfusepath{draw}
    \endpgfscope
    \pgfscope
        \pgftransformxshift{\ctikzvalof{bipoles/vsourceam/margin}\pgf@circ@res@right}
        \pgftext[rotate=-\pgf@circ@direction]{$+$}
        \pgfusepath{draw}
    \endpgfscope
}
\makeatother

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