PSTricks 解决方案

Question

在 TikZ 电路库中，是否有气体放电管的符号？

在手册中我找不到任何与此相关的内容（并且其中的整个符号列表似乎相当短）。

Answer 1

要使 Lionel 的节点像其他电路元件一样工作，需要做两件事：您需要使用 声明符号circuit declare symbol=<name>, set <name> graphic={shape=<shape name>, draw, transform shape,...}，并且需要围绕局部原点构建形状。

这是实现此目的的一种方法（请注意，我使用形状circle ee作为新符号的基础，因为它已经定义了input和output锚点。

\documentclass{standalone}
\usepackage{tikz}
\usetikzlibrary{circuits, shapes.gates.ee}

\begin{document}

\makeatletter
\pgfdeclareshape{neon lamp shape}
{
    \inheritsavedanchors[from=circle ee]
    \inheritanchor[from=circle ee]{center}
    \inheritanchor[from=circle ee]{north}
    \inheritanchor[from=circle ee]{south}
    \inheritanchor[from=circle ee]{east}
    \inheritanchor[from=circle ee]{west}
    \inheritanchor[from=circle ee]{north east}
    \inheritanchor[from=circle ee]{north west}
    \inheritanchor[from=circle ee]{south east}
    \inheritanchor[from=circle ee]{south west}
    \inheritanchor[from=circle ee]{input}
    \inheritanchor[from=circle ee]{output}
    \inheritanchorborder[from=circle ee]

    \backgroundpath{
        \pgf@process{\radius}
        \pgfutil@tempdima=\radius

        \pgfpathcircle{\centerpoint}{\pgfutil@tempdima}

        \pgfpathmoveto{\pgfpoint{-\pgfutil@tempdima}{0pt}}
        \pgfpathlineto{\pgfpoint{-0.2\pgfutil@tempdima}{0pt}}
        \pgfpathmoveto{\pgfpoint{-0.2\pgfutil@tempdima}{0.7\pgfutil@tempdima}}
        \pgfpathlineto{\pgfpoint{-0.2\pgfutil@tempdima}{-0.7\pgfutil@tempdima}}

        \pgfpathmoveto{\pgfpoint{\pgfutil@tempdima}{0pt}}
        \pgfpathlineto{\pgfpoint{0.2\pgfutil@tempdima}{0pt}}
        \pgfpathmoveto{\pgfpoint{0.2\pgfutil@tempdima}{0.7\pgfutil@tempdima}}
        \pgfpathlineto{\pgfpoint{0.2\pgfutil@tempdima}{-0.7\pgfutil@tempdima}}
        \pgfusepath{stroke}

        \pgfpathcircle{\pgfqpoint{-0.4\pgfutil@tempdima}{-0.55\pgfutil@tempdima}}{.075\pgfutil@tempdima}
        \pgfusepath{fill}
    }
}
\makeatother


\begin{tikzpicture}[
circuit,
circuit declare symbol=neon lamp,
set neon lamp graphic={shape=neon lamp shape, draw, minimum size=1cm,transform shape}
]
\draw (0,0) to [neon lamp] (2,1);
\end{tikzpicture}

\end{document}

Answer 2

这是一个节点；它基于圆形，因此您可以使用键设置它的大小minimum width。

它还没有完成（我无法使用语法to[...]，而且我可能需要一些建议，因为我真的不知道如何做到这一点）

\documentclass{standalone}
\usepackage{tikz}
\usetikzlibrary{circuits}

\begin{document}

\makeatletter
\pgfdeclareshape{neon lamp}
{
    \inheritsavedanchors[from=circle]
    \inheritanchor[from=circle]{center}
    \inheritanchor[from=circle]{north}
    \inheritanchor[from=circle]{south}
    \inheritanchor[from=circle]{east}
    \inheritanchor[from=circle]{west}
    \inheritanchor[from=circle]{north east}
    \inheritanchor[from=circle]{north west}
    \inheritanchor[from=circle]{south east}
    \inheritanchor[from=circle]{south west}
    \inheritanchorborder[from=circle]
    \anchor{input}{\pgf@process{\radius} \pgf@x=\z@ \pgf@y=\radius}
    \anchor{output}{\pgf@process{\radius} \pgf@y=\radius \pgf@x=2\pgf@y}

    \backgroundpath{
        \pgf@process{\radius}
        \pgfutil@tempdima=\radius

        \pgfpathcircle{\pgfqpoint{\pgfutil@tempdima}{\pgfutil@tempdima}}{\pgfutil@tempdima}

        \pgfpathmoveto{\pgfpoint{\z@}{\pgfutil@tempdima}}
        \pgfpathlineto{\pgfpoint{.8\pgfutil@tempdima}{\pgfutil@tempdima}}
        \pgfpathmoveto{\pgfpoint{.8\pgfutil@tempdima}{1.7\pgfutil@tempdima}}
        \pgfpathlineto{\pgfpoint{.8\pgfutil@tempdima}{.3\pgfutil@tempdima}}

        \pgfpathmoveto{\pgfpoint{2\pgfutil@tempdima}{\pgfutil@tempdima}}
        \pgfpathlineto{\pgfpoint{1.2\pgfutil@tempdima}{\pgfutil@tempdima}}
        \pgfpathmoveto{\pgfpoint{1.2\pgfutil@tempdima}{1.7\pgfutil@tempdima}}
        \pgfpathlineto{\pgfpoint{1.2\pgfutil@tempdima}{.3\pgfutil@tempdima}}

        \pgfpathcircle{\pgfqpoint{.55\pgfutil@tempdima}{.4\pgfutil@tempdima}}{.05\pgfutil@tempdima}
    }
}
\makeatother


\begin{tikzpicture}
\node[shape=neon lamp,draw] (lamp) {};
\draw (lamp.input) -- ++(-.5,0);
\draw (lamp.output) -- ++(.5,0);
\end{tikzpicture}

\end{document}

Answer 3

PSTricks 解决方案

我意识到这个问题早已被遗忘。我也意识到 OP 询问了 Tikz，但在这种情况下，提供 PSTricks 解决方案可能仍然很有用。

我们pst-circ有要使用的设置和机制：\newCircDipole。例如：

\newCircDipole{neonlamp}%
\makeatletter%
\def\pst@draw@neonlamp{%
  \pscircle(0,0){0.5}
  \psline[linewidth=2\pslinewidth](-0.15,-0.3)(-0.15, 0.3)
  \psline[linewidth=2\pslinewidth](0.15,-0.3)(0.15, 0.3)
  \psdot[dotsize=0.1](0,0.3)
  \wire(-0.6,0)(-0.15,0)
  \wire(0.6,0)(0.15,0)
  \pnode(-0.6,0){dipole@1}
  \pnode(0.6,0){dipole@2}%
}%
\makeatother