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circuittikz 彩色电流箭头

tag-icon • tag-icon circuitikz tikz-circuit-lib circuits
circuittikz 彩色电流箭头

我目前正在制作我的第一个circuittikz图形，遇到了一些问题。我想将内置的电流箭头变成彩色（红色）。有谁知道这是否可行？

下面是我正在处理的图： 在此处输入图片描述 代码如下：

\begin{circuitikz} \draw
% bottom line           
    (0,0)  to [short,o-o] (11,0)
% shunt branches            
    (2,0) to [C, *-*,l=$C/2$,v=$V_C$] (2,3)     
    (9,0) to [C, *-*,l=$C/2$] (9,3)     
% top line          
    (0,3) to [short,o-] (3,3)
    to [R, l_=$R$,i=$I_1$] (5,3)
    (5,3)  -- (6,3)
    to [L, l_=$L$] (8,3)
    to [short,-o] (11,3)
% Input and output labels
    (0,1.5)  node[] {$V_s$}
    (11,1.5) node[] {$V_r$}
;\end{circuitikz}

顺便问一下，有人知道是否可以将电压极性标记（包括标签）移离第一个电容器吗？

答案1

目前，箭头颜色设置为与其他颜色相同。但可以随时重新定义和添加内容。

\documentclass{standalone}
\usepackage{circuitikz}

\makeatletter
\ctikzset{current arrow color/.initial=black}% create key

\pgfdeclareshape{currarrow}{
    \anchor{center}{
        \pgfpointorigin
    }
        \anchor{tip}{
        \pgfpointorigin
            \pgf@circ@res@step = \pgf@circ@Rlen
                \divide \pgf@circ@res@step by 16
        \pgf@x  =\pgf@circ@res@step
        }
    \behindforegroundpath{      

        \pgfscope
            \pgf@circ@res@step = \pgf@circ@Rlen
            \divide \pgf@circ@res@step by 16

            \pgfpathmoveto{\pgfpoint{-.7\pgf@circ@res@step}{0pt}}
            \pgfpathlineto{\pgfpoint{-.7\pgf@circ@res@step}{-.8\pgf@circ@res@step}}
            \pgfpathlineto{\pgfpoint{1\pgf@circ@res@step}{0pt}}
            \pgfpathlineto{\pgfpoint{-.7\pgf@circ@res@step}{.8\pgf@circ@res@step}}
            \pgfpathlineto{\pgfpoint{-.7\pgf@circ@res@step}{0pt}}           
            \pgfsetcolor{\pgfkeysvalueof{/tikz/circuitikz/current arrow color}}
            \pgfusepath{draw,fill}

        \endpgfscope
    }
}
\makeatother

\begin{document}

\ctikzset{voltage/distance from node=.8}

\begin{circuitikz}[american]
\draw[circuitikz/current arrow color=red]
% bottom line           
    (0,0)  to [short,o-o] (11,0)
% shunt branches            
    (2,0) to [C, *-*,l={$C/2$},v=$V_C$] (2,3)
    (9,0) to [C, *-*,l=$C/2$,n=C2] (9,3)     
% top line          
    (0,3) to [short,o-] (3,3)
    to [R, l_=$R$,i=$I_1$] (5,3)
    (5,3)  -- (6,3)
    to [L, l_=$L$] (8,3)
    to [short,-o] (11,3)
% Input and output labels
    (C2.s)  node[right] {$V_s$};% anchors rotated
\draw[<->,red] (11,0.2) -- (11,2.8) node[midway,fill=white,text=black] {$V_r$};
\end{circuitikz}
\end{document}

演示

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