%Preamble
\documentclass{article}
\usepackage[spanish]{babel}
\usepackage[utf8]{inputenc}
\usepackage{amsmath}
\usepackage{graphicx}
\usepackage{blindtext}
\usepackage[american]{circuitikz}


\usepackage{tikz}
\usetikzlibrary{babel,shapes,arrows}


\title{Reporte de Práctica}
\author{Gerardo Marx}

% 1:
\tikzstyle{block} = [draw, fill=gray!20, rectangle, minimum height=3em, minimum width=6em]


%Document's body
\begin{document}

\maketitle{}
\tableofcontents

\listoffigures



\section{Introducción}

\section{Metodología}

\begin{figure}[htb]
\centering
\begin{tikzpicture}[auto, node distance=4cm,>=latex']
	\node [block] (in) {Input};
	\node [block, right of=in] (amp) {Amplificador};
	\node [block, right of=amp] (fil) {Filtro};
	\node [block, right of=fil] (out) {Output};
	
	\draw [->] (in)--(amp);
	\draw [->] (amp)--(fil); 
	\draw [->] (fil)--(out);
\end{tikzpicture}
\caption[Texto alternativo]{Texto de la figura Texto de la figura Texto de la figura Texto de la figura Texto de la figura Texto de la figura Texto de la figura}

\end{figure}


\section{Desarrollo}

\begin{figure}[htb!]
\centering
\begin{circuitikz}
	\draw (0,0) to[R=$R_1$, i=?, v=2$V$] (2,0) 
	-- (2,2) to[V] (0,2) -- (0,0);
\end{circuitikz}
\caption{Texto.}

\end{figure}

\begin{figure}
\begin{circuitikz}
	\draw (0,2) to[V] (0,0);
	\draw (0,0) -- (2,0);
	\draw (0,2) -- (2,2);
	\draw (2,2) to[R=2$\Omega$] (2,0);
\end{circuitikz}
\end{figure}



\section{Resultados}

\section{Conclusiones}






\end{document}