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Las aplicaciones industriales de los sistemas electrónicos crecen de modo exponencial desde la invención de los primeros dispositivos electrónicos semiconductores debido a su gran capacidad de integración, bajo precio y fiabilidad. Los dispositivos electrónicos son los componentes fundamentales de los circuitos. El objetivo principal de este libro es familiarizar a ingenieros electrónicos y, en general, a profesionales del sector de la electrónica, con el funcionamiento de los dispositivos electrónicos y los circuitos básicos que se fabrican con estos. La carencia de bibliografía relacionada con los dispositivos electrónicos en español, y en particular con aplicaciones prácticas mediante la resolución de ejercicios, hace a este libro único en su género. Su enfoque práctico lo convierte en una herramienta esencial para los estudiantes de asignaturas relacionadas con los dispositivos electrónicos en titulaciones de Ingeniería Electrónica, de Telecomunicaciones e Industrial; y también para alumnos que cursan asignaturas relacionadas con Electrónica Física, Dispositivos Electrónicos y Electrónica General en la Licenciatura de Físicas. La resolución de problemas sirve de pretexto para manejar conceptos teóricos, valores reales de magnitudes físicas y métodos de resolución numérica. El planteamiento propuesto sería de difícil justificación en un libro de teoría, de ahí el valor didáctico y formativo de la obra. El libro puede servir también de referencia rápida a los profesionales de la Electrónica que necesitan refrescar la memoria en lo referente a los dispositivos electrónicos. En la segunda edición hemos añadido problemas nuevos y modificaciones en otros ya existentes. Se han mejorado las tablas y apéndices, y hemos hecho un esfuerzo por contextualizar histórica y tecnológicamente los dispositivos que se analizan.