![Circuitikz 电压源美式](https://linux22.com/image/290153/Circuitikz%20%E7%94%B5%E5%8E%8B%E6%BA%90%E7%BE%8E%E5%BC%8F.png)
我对 Circuitikz 中的一个特定元素,即电压源,存在问题。
当我将此元件水平放置在电路上时,(−) 和 (+) 符号也会旋转,但这种行为是不对的,由于电压源的旋转,(−) 符号变成了可怕的 ( | )。在任何旋转角度下获得倾斜电压源都会发生同样的情况,例如,当旋转 45° 时,电压源的 (+) 符号看起来更像 (×) 等等。
我想知道是否有可能获得电压源的非旋转极性符号,即独立于电压源旋转?
就像书上说的一样,它们完美地表示了美国电压源以任意角度旋转而不改变极性符号的位置。(我可以使用欧洲风格,但这些人不习惯,他们可能会感到困惑)。
提前致谢。☺
答案1
\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}
对于受控电压源,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