Digital Electronics

Electronic circuits use electronic devices to perform functions on signals such as amplification. filtering, rectifying, switching, etc.. Electronics has been a major topic of study in Electrical Engineering for nearly a century. Early electronic circuits used devices such as spark gaps and point-contact crystal diodes to perform signal processing- Later on, vacuum tubes were invented which made electronic communications and control systems widely available, hi the late 1940's, semiconductor devices such as diodes and transistors became available which created an electronics revolution. With these changes in technology, the study of electronics did not change significantly, only the devices changed. The circuits and the methods did not change substantially. SEMICOND.pdf......Page 0 Electron Mobility......Page 6 Current Density......Page 7 Conductivity......Page 8 Resistance as a Function of Temperature......Page 9 Energy Bands and Bandgap Energy......Page 11 Electron-Hole Pair Generation and Recombination......Page 12 Photoconductors and Photodetectors......Page 14 Temperature Dependence of Hole-Electron Concentration......Page 17 Carrier Concentrations......Page 21 Fermi Level......Page 24 Non-Ideal Factors That Affect Terminal Characteristics......Page 33 SEMICOND.pdf -1 SEMICOND.pdf 1 Electron Mobility 6 Current Density 7 Conductivity 8 Resistance as a Function of Temperature 9 Energy Bands and Bandgap Energy 11 Electron-Hole Pair Generation and Recombination 12 Photoconductors and Photodetectors 14 Temperature Dependence of Hole-Electron Concentration 17 Carrier Concentrations 21 Fermi Level 24 Non-Ideal Factors That Affect Terminal Characteristics 33