[Tex/LaTex] Circuitikz: Newline in resistor labels

circuitikz

How could I go about writing the label R1, with the resistance of 560 ohms underneath it using Circuitikz? Ideally, I want a newline in the resistor label.

\begin{circuitikz}
%\draw[style=help lines] (-8,-8) grid (8,8);
\draw
(0,0) node[npn,rotate=90] (darl) {} node[above] {$Q1$}
(0,-3)      node[npn,xscale=-1] (npn) {} node[left] {$Q2$}
(darl.B)    to[short,-*,i<^=\SI{37.2}{\micro\ampere}] ++(0,-0.65) node (base) {}
            to[short,i>^=\SI{5.67}{\milli\ampere}] (npn.C)

(darl.E)    to[short,-*,i=\SI{518}{\milli\ampere}] ++(1.23,0) node (zen) {}
            to[short,-*] ++(2,0) node (div) {}
            to[short,-o] ++(1.5,0)  node (out1) {}
            to[short] ++(1,0)
            to[vR,i>^=\SI{500}{\milli\ampere},l=$R_L$] ++(0,-6)
            to[short,-o] ++(-1,0) node (out2) {}
            to[short,-*] ++(-1.5,0)
            to[short,-*] ++(-4,0)
            to[short] ++(-3.5,0)
            to[V,l=\SI{18}{\volt}] ++(0,6)

(zen)       to[R,l=\SI{1.2}{\kilo\ohm},i>^=\SI{5.41}{\milli\ampere}] ++(0,-3)
            |- (npn.E)

(0,-6)      to[zD,-*,v_>=\SI{6.2}{\volt},i^<=\SI{12.7}{\milli\ampere}] (npn.E)
(div)       to[R,-*,l=$\SI{470}{\ohm}$,i>^=\SI{12.3}{\milli\ampere}] ++(0,-3) node (fb) {}
            to[R,l=$\SI{560}{\ohm}$,v_=\SI{6.90}{\volt}] ++(0,-3)

(npn.B)     to[short] (fb)

(darl.C)    to[short,-*] ++(-1,0) node (Rbe) {}
            to[short] ++(-0.235,0)
            to[short] ++(-1.5,0)

(Rbe)       to[short,i_=\SI{5.71}{\milli\ampere}] ++(0,-1.5)
            to[R,l_=\SI{680}{\ohm}] ++(1.76,0)

(6.5,0)     to[short,*-o] ++(1,0) node[right] {$\SI{12.7}{\volt}$}
;
\end{circuitikz}

ShuntRegulator

Best Answer

You can label few things by yourselves:

(div)       to[R,-*,l=$\SI{470}{\ohm}$,i>^=\SI{12.3}{\milli\ampere}] ++(0,-3) node (fb) {}
            to[R,v_=\SI{6.90}{\volt}] node[midway,right=1.3em,align=left] {R2\\$\SI{560}{\ohm}$} ++(0,-3)

Full code:

\documentclass{article}
\usepackage{circuitikz}
\usepackage{siunitx}
\begin{document}
  \begin{circuitikz}
%\draw[style=help lines] (-8,-8) grid (8,8);
\draw
(0,0) node[npn,rotate=90] (darl) {} node[above] {$Q1$}
(0,-3)      node[npn,xscale=-1] (npn) {} node[left] {$Q2$}
(darl.B)    to[short,-*,i<^=\SI{37.2}{\micro\ampere}] ++(0,-0.65) node (base) {}
            to[short,i>^=\SI{5.67}{\milli\ampere}] (npn.C)

(darl.E)    to[short,-*,i=\SI{518}{\milli\ampere}] ++(1.23,0) node (zen) {}
            to[short,-*] ++(2,0) node (div) {}
            to[short,-o] ++(1.5,0)  node (out1) {}
            to[short] ++(1,0)
            to[vR,i>^=\SI{500}{\milli\ampere},l=$R_L$] ++(0,-6)
            to[short,-o] ++(-1,0) node (out2) {}
            to[short,-*] ++(-1.5,0)
            to[short,-*] ++(-4,0)
            to[short] ++(-3.5,0)
            to[V,l=\SI{18}{\volt}] ++(0,6)

(zen)       to[R,l=\SI{1.2}{\kilo\ohm},i>^=\SI{5.41}{\milli\ampere}] ++(0,-3)
            |- (npn.E)

(0,-6)      to[zD,-*,v_>=\SI{6.2}{\volt},i^<=\SI{12.7}{\milli\ampere}] (npn.E)
(div)       to[R,-*,l=$\SI{470}{\ohm}$,i>^=\SI{12.3}{\milli\ampere}] ++(0,-3) node (fb) {}
            to[R,v_=\SI{6.90}{\volt}] node[midway,right=1.3em,align=left] {R2\\$\SI{560}{\ohm}$} ++(0,-3)

(npn.B)     to[short] (fb)

(darl.C)    to[short,-*] ++(-1,0) node (Rbe) {}
            to[short] ++(-0.235,0)
            to[short] ++(-1.5,0)

(Rbe)       to[short,i_=\SI{5.71}{\milli\ampere}] ++(0,-1.5)
            to[R,l_=\SI{680}{\ohm}] ++(1.76,0)

(6.5,0)     to[short,*-o] ++(1,0) node[right] {$\SI{12.7}{\volt}$}
;
\end{circuitikz}
\end{document}

enter image description here

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] How to change the size of a european resistor in circuitikz

It seems to me as this is not possible in this way. bipoles/resistor/height and width has been hardcoded for the American variants. The only possibility I am seeing here is to change the length of the bipole. The length is a possible parameter of each bipole.

This could look like in my MWE below:

% arara: pdflatex

\documentclass[preview]{standalone}
\usepackage{circuitikz}

\begin{document}    
    % original size
    \begin{tikzpicture}
    \draw (0,0) to[R] (2,0) to[Do] (4,0);
    \ctikzset{resistor = european}
    \draw (6,0) to[R] (8,0) to[Do] (10,0);
    \end{tikzpicture}

    % shrink resistor
    \ctikzset{bipoles/resistor/height=0.15}
    \ctikzset{bipoles/resistor/width=0.4}
    \begin{tikzpicture}
    \draw (0,0) to[R] (2,0) to[Do] (4,0);
    \ctikzset{resistor = european}
    \draw (6,0) to [/tikz/circuitikz/bipoles/length=20pt, R] (8,0) to[Do] (10,0);
    \end{tikzpicture}   
\end{document}

enter image description here

Best Answer

Related Solutions

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

[Tex/LaTex] How to change the size of a european resistor in circuitikz

Related Question