# Circuitikz common [closed]

I'm learning Circuitikz to draw schematics in my reports. I'd like to use the symbol for common; however, it doesn't seem to be there. What are my options?

Thanks.

Example of use:

\documentclass[10pt,a4paper,final]{report}
\usepackage[utf8]{inputenc}
\usepackage{amsmath}
\usepackage{amsfonts}
\usepackage{amssymb}
\usepackage{graphicx}
\usepackage[american,siunitx]{circuitikz}
\usepackage{siunitx}

\begin{document}

Test TikZ image:
\begin{figure}[htbp]
\begin{center}
\begin{circuitikz}[scale=2] \draw
(0,0)   to[V, l=\SI{10}{\milli\volt}, -*]                   (0,2)
to[R, l=\SI{1}{\kilo\ohm}, i=$i_{in}$, -*, n=r1]        (2,2)
(2,2)   to[R, l=\SI{10}{\kilo\ohm}, v_=$U(x)$]              (4,2)
to[Tnpn, n=npn]                                     (4,0)
(2,3)   node[op amp] (opamp) {}
(opamp.+) -|                                                (0,2)

(0,0)   node[ground] {}
(2,0)   node[ground] {}
(4,0)   node[ground] {}
(r1) node[below=2mm] {A resistor!}
;
\end{circuitikz}
\caption{Some circuit.}
\end{center}
\end{figure}

\end{document}


Changing ground to sground causes a compilation error.

## closed as too localized by Jake, Thorsten, mafp, Mensch, Heiko OberdiekJun 15 '13 at 12:07

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• Are you perhaps looking for the sground symbol (p. 7 in the circuitikz v 0.3.0 manual)? – Jake Jun 15 '13 at 4:01
• Maybe you're using an outdated version of circuitikz? Could you edit your question to include a small example document (starting from \documentclass) to show how you're trying to use the symbol? – Jake Jun 15 '13 at 4:35
• Thanks for the example. It works fine for me with sground. Could you check in your .log file what version of circuitikz you're using? – Jake Jun 15 '13 at 4:40
• Okay, so you'll need to update the package, the signal ground (sground) was only added in version 0.3.0 – Jake Jun 15 '13 at 4:47
• Yep! Thanks! I'm doing that now. Installing the latest version of texlive. It's annoying the default one is old (in Ubuntu). – user968243 Jun 15 '13 at 4:52