Electron Devices & Circuits

Electron Devices & Circuits

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Semiconductor Physics and PN JunctionConduction in semiconductors - Holes and electrons in intrinsic semiconductor - Carrier concentration in intrinsic semiconductor. Fermi level in intrinsic semiconductor ; Impurities and Fermi levels in impure semiconductor ; Diffusion. PN junction diode theory - Band structure - Current components - Volt-Ampere characteristics ; Transition and diffusion capacitance - Switching, storage and transition time. Zener diodes - Tunnel Diodes. Diode applications - Half wave and Full wave rectifications - Clippers, Clampers and Voltage multiplier.Bipolar and Field Effect TransistorsTransistor construction, Operation and characteristics - Transistor current components, Analytical expressions for transistor characteristics, Transistor switching times. JFET - Pinch off voltage - Volt-Ampere characteristics - FET small signal model. Insulated Gate FET (MOSFET) types - Construction, Operation and Characteristics. Operation point of Bipolar transistors - Fixed bias circuits - Load line analysis - Collector to Base bias - Emitter stabilized bias circuit - Self bias - Stability factor - Thermal runaway - Biasing for FET - Fixed bias - Source self bias - Biasing against device variation. Biasing for depletion types and enhancement types MOSFETs.Electronic CircuitsCommon emitter and Common collector amplifiers - Common source amplifier - Source follower - Equivalent circuit - Gain and frequency response. Differential amplifiers, Negative feedback - Characteristics, Feedback topologies, Analysis of Series shunt feedback amplifier. Stability and Oscillators - Phase shift, Colpitts and Crystal Oscillator. Transistor bistable and astable multivibrators.Special Semiconductor Devices and ApplicationsSilicon controlled rectifier - Construction, Operation and Characteristics - Phase controlled rectifiers using SCRs. Gate turn off switch, DIAC, TRIAC, AC Voltage regulator using DIAC and TRIAC. UJT - Characteristics, UJT relaxation oscillator. Opto isolators - Light emitting diodes - Seven segment displays, LCD - Photo diode and transistor, Solar Cell. Power MOSFET - Application in SMPS.Integrated Circuits and ApplicationsFabrication of monolithic integrated circuits - Epitaxy and diffusion process. Monolithic operational amplifiers - Characteristics and Specifications. Applications - Inverting, Non inverting and Difference Amplifiers. Differentiator and integrator, Voltage to Current converter, Wein bridge oscillator, Active low pass and band pass filter, Precision rectifiers, Schmitt trigger and astable multivibrator. Monolithic timer IC 555 - Applications as astable and monostable multivibrator.Draw the circuit diagram of an ideal differentiator. 25. Draw the input and ... Draw the neat circuit diagram of Wien bridge oscillator using op-amp. 33. State the advantages of ... Which are the basic elements of IC 555 timer ? 47. Draw the blockanbsp;...

Title:Electron Devices & Circuits
Author:A.P.Godse U.A.Bakshi
Publisher:Technical Publications - 2008-01-01


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