Graphics, Figures & Tables ⇒ Quetions about tikz - circuitikz

[überfuzz]

Hi everyone!

I'm trying to set up a small signal model of a common source stage. I have some questions regarding components I like to use in the schematic. These are the package I use and some general settings.

Code: Select all

\usepackage{tikz} 
\usepackage{circuitikz}
\ctikzset{tripoles/njfet/height=.5}
\ctikzset{tripoles/njfet/width=.3}
\ctikzset{bipoles/resistor/height=.1}
\ctikzset{bipoles/resistor/width=0.3}
\ctikzset{bipoles/capacitor/height=.2}
\ctikzset{bipoles/capacitor/width=0.1}
\ctikzset{monopoles/ground/width=0.15}

The schematic it self looks like this:

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\begin{circuitikz}[scale = 0.8, transform shape]
 \tiny

\draw (-3,1) to[open,v=$U_{in}$] (-3,0); <-- this gives me an arrow I don't want.
\draw (-2,1) to[R=$R_1$] (-2,0);
\draw (-1,1) to[open,v=$U_{gs}$] (-1,0); <-- unwanted arrow...
\draw (0,0) to[cI] (0,1);                <-- I want to resize this component.
\draw (1,1) to[R=$R_D||r_0$] (1,0);
\draw (2,0)to[open,v_>=$U_{out}$] (2,1);  <-- unwanted arrow...
\draw (-3,1) to[short, o-o] (-1,1);
\draw (0,1) to[short, -o] (2,1);
\draw (-3,0) to[short, o-o] (2,0);
\end{circuitikz}

1. Where do I find information of how the [open, ...]-edge can be altered?
2. Is it possible to resize the current source?

[überfuzz]

The voltage drop seems to be an European - North American thing. So, that's solved. The sizing though, still a problem...