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将极性标签放置在电压源图标外面

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将极性标签放置在电压源图标外面

这是产生下面第一张图片所示输出的代码：

\documentclass{article}
\usepackage{tikz}
\usepackage{circuitikz}
\begin{document}
\begin{figure}[h!]
\begin{center}
\begin{circuitikz}[american]
\draw (0,0) to [isource, -*, l=$9mA$] (0,3);
\draw (0,3) to [R=$1k\Omega$, -*] (3,3);
\draw (3,3) to [isource, -*, a=$2mA$] (3,0);
\draw (3,0) to [R=$7k\Omega$] (0,0);
\draw (3,3) to [R=$6k\Omega$, -*] (6,3);
\draw (6,0) to [vsource, a=$4V$] (6,3);
\draw (6,0) to [R=$2k\Omega$] (3,0);
\draw (0,6) to [vsource, a=$2V$] (0,3);
\draw (0,6) to [R, a=$3k\Omega$, -*] (3,6);
\draw (3,6) to [R, a=$3k\Omega$] (3,3);
\draw (3,6) to [isource, a=$8mA$] (6,6);
\draw (6,6) to [R=$5k\Omega$] (6,3);
\draw (6,3) to [short, i=$I_A$] (5.2,3);
\draw (3,3) to [short, i=$I_B$] (3,3.8);
\draw (0,3) to [short, i=$I_C$] (0.8,3);
\draw (0,6) to [short, i=$I_D$] (0.8,6);
\draw (6,0) to [short, i=$I_E$] (5.2,0);
\draw (3,3) to node[ground, scale=1.4, rotate=45]{} (3,3);
\node[label=above:$V_1$] (0) at (3,6) {};  
\node[label=below:$V_2$] (0) at (3,0) {};  
\node[label=left:$V_3$] (0) at (0,3) {};  
\node[label=right:$V_4$] (0) at (6,3) {};  
\end{circuitikz}
\end{center}
\end{figure}
\end{document}

我的问题是如何在电压源图标外面放置极性标签（+/-）（就像第二张图片上那样）？

电路1 电路2

答案1

使用override source vif,siunitx语法表示所有值和相对坐标：

\documentclass[margin=3mm]{standalone}

\usepackage[siunitx]{circuitikz}
%\usetikzlibrary{positioning}

\begin{document}

    \begin{circuitikz}[american]
    \ctikzset{bipole/override source vif=true}
\draw   (0,0)   to [isource, l=9<\milli\ampere>,-*] ++ (0,3)   coordinate[label=left:$V_3$] (A)
                to [R=1<\kilo\ohm>, f>^=$I_C$, -*]             ++ (3,0)   
                to [isource, a=2<\milli\ampere>,-*] ++ (0,-3)  coordinate[label=below:$V_2$] (B)
                to [R=7<\kilo\ohm>]                 ++ (-3,0)
%                
        (B)     to [R, a=2<\kilo\ohm>, f_<=$I_E$]              ++ (3,0)
                to [esource, v=4<\volt>, -*]        ++ (0,3)    node[right] {$V_4$}
                to [R, a=6<\kilo\ohm>, f>^=$I_A$]   ++ (-3,0)
%
        (A)     to [esource, v^=2<\volt>]            ++ (0,3)
                to [R, a=3<\kilo\ohm>, f>^=$I_D$, -*]   ++ (3,0)    coordinate[label=above:$V_1$] (C)
                to [R, a=$3k\Omega$]                ++ (0,-3)
%
        (C)     to [isource, a=8<\milli\ampere>]    ++ (3,0) 
                to [R=5<\kilo\ohm>]                 ++ (0,-3)
%
        (A -| B)   -- ++ (0.8,-0.4) node[ground]{}
        ;
\end{circuitikz}
\end{document}

在此处输入图片描述

答案2

欢迎来到 TeX.SX！请vsource, a=$4V$使用代替esource, v_=$4V$：

\documentclass{standalone}
\usepackage{circuitikz}

\begin{document}
\begin{circuitikz}[american]
\draw (0,0) to [isource, -*, l=$9mA$] (0,3);
\draw (0,3) to [R=$1k\Omega$, -*] (3,3);
\draw (3,3) to [isource, -*, a=$2mA$] (3,0);
\draw (3,0) to [R=$7k\Omega$] (0,0);
\draw (3,3) to [R=$6k\Omega$, -*] (6,3);
\draw (6,0) to [esource, v_=$4V$] (6,3);
\draw (6,0) to [R=$2k\Omega$] (3,0);
\draw (0,6) to [esource, v_=$2V$] (0,3);
\draw (0,6) to [R, a=$3k\Omega$, -*] (3,6);
\draw (3,6) to [R, a=$3k\Omega$] (3,3);
\draw (3,6) to [isource, a=$8mA$] (6,6);
\draw (6,6) to [R=$5k\Omega$] (6,3);
\draw (6,3) to [short, i=$I_A$] (5.2,3);
\draw (3,3) to [short, i=$I_B$] (3,3.8);
\draw (0,3) to [short, i=$I_C$] (0.8,3);
\draw (0,6) to [short, i=$I_D$] (0.8,6);
\draw (6,0) to [short, i=$I_E$] (5.2,0);
\draw (3,3) to node[ground, scale=1.4, rotate=45]{} (3,3);
\node[label=above:$V_1$] (0) at (3,6) {};  
\node[label=below:$V_2$] (0) at (3,0) {};  
\node[label=left:$V_3$] (0) at (0,3) {};  
\node[label=right:$V_4$] (0) at (6,3) {};  
\end{circuitikz}
\end{document}

在此处输入图片描述

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