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How can I draw a wattmeter using LaTeX and circuitikz? I want to use the one with a big circle and W inside, and 4 circles (up, down, left right) which contain respectively 2 + and 2 -, like the one in this pic Thank you everyone

Fede Masi
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  • Have you made any attempt so far? If so please show what code you've tried. – Null Jul 25 '16 at 19:23
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    Welcome to TeX SE! :) It would be useful if you included at least the code for the rest of the circuit, so we don't have to type it from scratch. – Alenanno Jul 25 '16 at 20:36
  • One can make one easily enough (see http://tex.stackexchange.com/questions/274896/no-drawing-of-ohmmeter-or-multimeter-using-circuitikz/275079#275079 for example) but why would you want 4 leads on a wattmeter? Three leads (in, out and ground) should be sufficient. – John Kormylo Jul 26 '16 at 02:51

1 Answers1

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this wattmeter symbol looks very strange to me, never seen before. Nevertheless, you can use an empty source and some tikz-node to achieve it, e.g.:

\documentclass{standalone}
\usepackage{circuitikz}

\begin{document}
\newcommand{\esourcetowattmeter}[1]{
    \draw (#1)node{W};
    \draw (#1.north) node[circle,draw,anchor=south,inner sep=0,fill=white,minimum width=2.5mm]{\tiny +};
    \draw (#1.south) node[circle,draw,anchor=north,inner sep=0,fill=white,minimum width=2.5mm]{\tiny +};
    \draw (#1.east) node[circle,draw,anchor=west,inner sep=0,fill=white,minimum width=2.5mm]{\tiny -};
    \draw (#1.west) node[circle,draw,anchor=east,inner sep=0,fill=white,minimum width=2.5mm]{\tiny -};
}

\begin{circuitikz}
\draw (0,0) to[R]++(2,0) coordinate(left) to [esource,n=wattmeter]++(2,0) to [L]++(2,0);

\draw (left)to [short,*-]++(0,1)-|(wattmeter.north);
\draw (wattmeter.south) to [R]++(0,-2);

\esourcetowattmeter{wattmeter}
\end{circuitikz}

\end{document}

Result: enter image description here

Best regards, Stefan

sistlind
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