<?xml version="1.0" encoding="ISO-8859-1"?><article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<front>
<journal-meta>
<journal-id>0035-001X</journal-id>
<journal-title><![CDATA[Revista mexicana de física]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. mex. fis.]]></abbrev-journal-title>
<issn>0035-001X</issn>
<publisher>
<publisher-name><![CDATA[Sociedad Mexicana de Física]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0035-001X2007000300010</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Instrumentación electrónica de la función potencial tipo Sombrero Mexicano]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Campos-Cantón]]></surname>
<given-names><![CDATA[I]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Campos-Cantón]]></surname>
<given-names><![CDATA[E]]></given-names>
</name>
<xref ref-type="aff" rid="A02"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Villanueva Ortega]]></surname>
<given-names><![CDATA[L.F.]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
</contrib-group>
<aff id="A01">
<institution><![CDATA[,Facultad de Ciencias  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
</aff>
<aff id="A02">
<institution><![CDATA[,Universidad Autónoma de San Luis Potosí Dpto. de Físico Matemáticas ]]></institution>
<addr-line><![CDATA[San Luis Potosí SLP]]></addr-line>
<country>México</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>06</month>
<year>2007</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>06</month>
<year>2007</year>
</pub-date>
<volume>53</volume>
<numero>3</numero>
<fpage>210</fpage>
<lpage>212</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0035-001X2007000300010&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0035-001X2007000300010&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0035-001X2007000300010&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[En este trabajo se presenta la implementación electrónica del potencial Sombrero Mexicano a través de la Función Sombrero Mexicano. La construcción de la función potencial (Sombrero Mexicano) se realiza utilizando circuitos integrados y elementos pasivos.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[We present in this work the electronic implementation of Mexican Hat potentials using the Mexican Hat function. The construction of this potential function (Mexican Hat) is accomplished using integrated circuits and passive elements.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Multiplicadores]]></kwd>
<kwd lng="es"><![CDATA[dinámica no lineal]]></kwd>
<kwd lng="es"><![CDATA[amplificadores operacionales]]></kwd>
<kwd lng="en"><![CDATA[Multipliers]]></kwd>
<kwd lng="en"><![CDATA[non linear dynamics]]></kwd>
<kwd lng="en"><![CDATA[operational amplifiers]]></kwd>
</kwd-group>
</article-meta>
</front><body><![CDATA[ <p align="justify"><font face="verdana" size="4">Instrumentaci&oacute;n</font></p>     <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>     <p align="center"><font face="verdana" size="4"><b>Instrumentaci&oacute;n electr&oacute;nica de la funci&oacute;n potencial tipo Sombrero Mexicano</b></font></p>     <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>     <p align="center"><font face="verdana" size="2"><b>I. Campos&#150;Cant&oacute;n&ordf;, E. Campos&#150;Cant&oacute;n<sup>b</sup> y L.F. Villanueva Ortega&ordf;</b></font></p>     <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>     <p align="justify"><font face="verdana" size="2"><i>&ordf; Facultad de Ciencias,</i></font></p>     <p align="justify"><font face="verdana" size="2"><i><sup>b</sup> Dpto. de F&iacute;sico Matem&aacute;ticas, Universidad Aut&oacute;noma de San Luis Potos&iacute;, &Aacute;lvaro Obreg&oacute;n 64, 78000, San Luis Potos&iacute;, SLP, M&eacute;xico, </i>e&#150;mail: <a href="mailto:icampos@fciencias.uaslp.mx">icampos@fciencias.uaslp.mx</a></font></p>     <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>     <p align="justify"><font face="verdana" size="2">Recibido el 24 de octubre de 2006    ]]></body>
<body><![CDATA[<br>   Aceptado el 19 de abril de 2007</font></p>     <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>     <p align="justify"><font face="verdana" size="2"><b>Resumen</b></font></p>     <p align="justify"><font face="verdana" size="2">En este trabajo se presenta la implementaci&oacute;n electr&oacute;nica del potencial Sombrero Mexicano a trav&eacute;s de la Funci&oacute;n Sombrero Mexicano. La construcci&oacute;n de la funci&oacute;n potencial (Sombrero Mexicano) se realiza utilizando circuitos integrados y elementos pasivos.</font></p>     <p align="justify"><font face="verdana" size="2"><b>Descriptores: </b>Multiplicadores; din&aacute;mica no lineal; amplificadores operacionales.</font></p>     <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>     <p align="justify"><font face="verdana" size="2"><b>Abstract</b></font></p>     <p align="justify"><font face="verdana" size="2">We present in this work the electronic implementation of Mexican Hat potentials using the Mexican Hat function. The construction of this potential function (Mexican Hat) is accomplished using integrated circuits and passive elements.</font></p>     <p align="justify"><font face="verdana" size="2"><b>Keywords: </b>Multipliers; non linear dynamics; operational amplifiers. </font></p>     <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>     ]]></body>
<body><![CDATA[<p align="justify"><font face="verdana" size="2">PACS: 02.30.Em; 02.30.Oz; 47.10.&#150;g; 95.10.Fh</font></p>     <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>     <p align="justify"><font face="verdana" size="2"><a href="/pdf/rmf/v53n3/v53n3a10.pdf" target="_blank">DESCARGAR ART&Iacute;CULO EN FORMATO PDF</a></font></p>     <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>     <p align="justify"><font face="verdana" size="2"><b>Agradecimientos</b></font></p>     <p align="justify"><font face="verdana" size="2">ECC agradece el apoyo otorgado por el FAI&#150;UASLP a trav&eacute;s del convenio <b>C06&#150;FAI&#150;03&#150;11.14 </b>para soportar parcialmente este trabajo.</font></p>     <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>     <p align="justify"><font face="verdana" size="2"><b>References</b></font></p>     <!-- ref --><p align="justify"><font face="verdana" size="2">1. Z. Zhou y H. 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