Table of Contents Conducting Materials: A Review of Energy Band Picture Description of Electrical Materials Conductivity of Metals Thermal Conductivity of Metals Superconductivity Applications of Conducting Materials Dielectric Materials: Dielectric Material in a Static Electric Field Dielectric Materials in an Alternating Electric Field Applications of Dielectric/Insulating Materials Magnetic Materials: Magnetization Types of Magnetic Materials Eddy Current and Hysterisis Losses Applications of Magnetic Materials Semiconductors: Different Types of Semiconductors Ge and Si as Semiconducting Materials pn Junction Equation of Continuity Construction and Characteristics of Conductor Devices: Planar Technology of Device Fabrication Metal-Semiconductor Junctions Zener Diodes and Breakdown Mechanisms of pin Junctions Light Emitting Diodes Solar Cells Photodetectors Bipolar and Metal-oxide-semiconductor Devices: Bipolar Junction Transistor (BJT) Junction Field Effect Transistor (JFET) Metal-Oxide-Semiconductor Field Effect Transistor (MOS FET) Injunction Transistor (UJT) Power Devices: Thyristor Family Insulated Gate Bipolar Transistor (IGBT) VMOS Appendix.