[Tex/LaTex] Changing the size of one type of non-bipole component (e.g. transistor) in circuitikz

circuitikztikz-pgf

Is there an easy way to scale the size of one type of non-bipole component (transistor) in circuitikz? Changing all of the bipole components are easy, you can just do /tikz/circuitikz/bipoles/length=xyz, but non-bipoles don't seem to have an equivalent, and anyway I just want to change the MOSFETs in my circuit so they are all a little smaller.

Example (this is only one halfbridge, I have another circuit which has many half-bridges so I would rather not scale them manually at each MOSFET)

\documentclass{standalone}
\usepackage[american]{circuitikz}
\begin{document}
\begin{circuitikz}[/tikz/circuitikz/bipoles/length=0.9cm, scale=0.9, font=\sffamily]
    \draw (0,0) to[R=$R_{sa}$, i^<= $I_a$] (0,2) 
                to [Tnigfetd,n=mos1](0,3.5)
                to [Tnigfetd,n=mos1](0,5.5) 
                to [short, -o](1.5,5.5);
    \draw (0,0) to [short=$R_{p1}$, -o](1.5,0);
    \draw (0,3.5) to [short, *-o](0.5,3.5) node [right] {A};
\end{circuitikz}
\end{document}

Best Answer

The default values for nigfetd are height=1.1 and width = 0.7.

\documentclass{standalone}
\usepackage[american]{circuitikz}
\begin{document}
% before
\begin{circuitikz}[/tikz/circuitikz/bipoles/length=0.9cm, scale=0.9, font=\sffamily]
    \draw (0,0) to[R=$R_{sa}$, i^<= $I_a$] (0,2) 
                to [Tnigfetd,n=mos1](0,3.5)
                to [Tnigfetd,n=mos1](0,5.5) 
                to [short, -o](1.5,5.5);
    \draw (0,0) to [short=$R_{p1}$, -o](1.5,0);
    \draw (0,3.5) to [short, *-o](0.5,3.5) node [right] {A};
\end{circuitikz}
% after
\begin{circuitikz}[/tikz/circuitikz/bipoles/length=0.9cm, scale=0.9, font=\sffamily,
  /tikz/circuitikz/tripoles/nigfetd/height=.8,
  /tikz/circuitikz/tripoles/nigfetd/width=.5]
    \draw (0,0) to[R=$R_{sa}$, i^<= $I_a$] (0,2) 
                to [Tnigfetd,n=mos1](0,3.5)
                to [Tnigfetd,n=mos1](0,5.5) 
                to [short, -o](1.5,5.5);
    \draw (0,0) to [short=$R_{p1}$, -o](1.5,0);
    \draw (0,3.5) to [short, *-o](0.5,3.5) node [right] {A};
\end{circuitikz}
\end{document}

Related Solutions

[Tex/LaTex] circuitikz: labels, component size, and documentation

Problem 1: Positioning Labels

This can be solved quite easily since circuitikz defines also l^ and l_ to locate the labels. In this case l_ is the option needed.

Problem 2: Scaling components

The options scale and transform shape are always a way since circuitikz exploits TikZ, but there are also specific keys to change size of the components; you find some examples in the documentation 6.2 Components size.

To get thicker lines, one can always use the standard TikZ keys thick, very thick and so on or line width.

Here is an example which more or less answers to all the request (just illustrative: the combination of thick with that bipoles' length is awful):

\documentclass{article}
\usepackage{circuitikz}
\usepackage{siunitx}

\begin{document}

    \begin{circuitikz}[scale=0.8, transform shape,thick] 
    \ctikzset{bipoles/length=0.85cm}
        \draw   (5,0) -- 
                (5,-2) to[battery, l=$1.5\ V$, i=$\SI{3}{A}$] 
                (0,-2) -- 
                (0,0) to[resistor,  l= $R_2$ ] (5,0);
        \draw
            (3.5,1.5) to[resistor, l_=$R_3$] 
            (1.5,1.5)-- 
            (1.5,-1.1) to[resistor, l= $R_1$ ] 
            (3.5,-1.1) -- (3.5,1.5);
    \end{circuitikz}

\end{document}

The result:

enter image description here

For problem 3, unfortunately I can not point a better resource.

[Tex/LaTex] Line up nested tikz enviroments or how to get rid of them

As is explained in How do I draw shapes inside a tikz node? pics can be used for defining new objects. My main problem using pics is how to place where you want because they aren't nodes and positioning them is not so easy.

Following code shows how to define EDFA block.

    EDFA/.pic={
        \begin{scope}[scale=.5]
        \draw (-1,0) coordinate (in) --  (-1,1) -- (1,0) coordinate (out) --  (-1,-1) -- cycle;
        \node[anchor=north,inner sep=2pt] at (0,-1) {$1$};
        \end{scope}

In this case, coordinate (-1,0) will act as west anchor and 1,0 as east. Both point will have an special name for further reference. Every pic is placed according its own origin (0,0). You can use Claudio's answer to Anchoring TiKZ pics for better positioning.

As your example was simple, I'd prefer to star with EDFA and place Source and Sink after it.

\documentclass[]{article}

% tikz
\usepackage{tikz}
\usetikzlibrary{positioning} %relative positioning

\begin{document}

\tikzset{%
    EDFA/.pic={
        \begin{scope}[scale=.5]
        \draw (-1,0) coordinate (in) --  (-1,1) -- (1,0) coordinate (out) --  (-1,-1) -- cycle;
        \node[anchor=north,inner sep=2pt] at (0,-1) {$1$};
        \end{scope}
    }
}

\begin{tikzpicture}[
block/.style={draw},
]

\draw pic (edfa) {EDFA};

\node[block, left=of edfain] (source) {Source};

\node[block, right= of edfaout] (sink) {Sink};

\draw[->] (source) -- (edfain);
\draw[->] (edfaout) -- (sink);

\end{tikzpicture}

\end{document}

I understand that your components are more complex than EDFA because for this particular case an isosceles triangle node with a label will do the work and it can be used as a node and not as a pic:

\documentclass[]{article}

% tikz
\usepackage{tikz}
\usetikzlibrary{positioning} %relative positioning
\usetikzlibrary{shapes.geometric}

\begin{document}

\begin{tikzpicture}[
    block/.style={draw},
    edfa/.style={isosceles triangle, minimum width=1cm, 
         draw, anchor=west, isosceles triangle stretches, 
         minimum height=1cm, label=-80:#1}
]

\node[block] (source) {Source};

\node[edfa=1, right=of source] (edfa) {};

\node[block, right= of edfa] (sink) {Sink};

\draw[->] (source) -- (edfa);
\draw[->] (edfa) -- (sink);

\end{tikzpicture}

\end{document}

Best Answer

Related Solutions

[Tex/LaTex] circuitikz: labels, component size, and documentation

[Tex/LaTex] Line up nested tikz enviroments or how to get rid of them

Related Question