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UNIT 1 :
SEMICONDUCTOR PHYSICS : Mobility and conductivity, charge densities in
a semiconductor, Fermi Dirac distribution, carrier concentrations and
fermi levels in semiconductor, Generation and recombination of charges,
diffusion and continuity equation, Mass action Law, Hall effect.
UNIT 2 : Junction diodes,Diode as a ckt. element, load line
concept, clipping and clamping circuits, Voltage multipliers.
Construction, characteristics and working principles of UJT
UNIT 3 : Transistor characteristics, Current components, Current
gains: alpha and beta. Operating point. Hybrid model, h-parameter
equivalent circuits. CE, CB and CC configuration. DC and AC analysis of
CE,CC and CB amplifiers. Ebers-Moll model. Biasing & stabilization
techniques. Thermal runaway, Thermal stability.
UNIT 4 : JFET, MOSFET, Equivalent circuits and biasing of JFET's &
MOSFET’s. Low frequency CS and CD JFET amplifiers. FET as a voltage
variable resistor.
UNIT 5 : SMALL SIGNAL AMPLIFIERS AT LOW FREQUENCY : Analysis of BJT
and FET, DC and RC coupled amplifiers. Frequency response, midband gain,
gains at low and high frequency. Analysis of DC and differential
amplifiers, Miller's Theorem. Cascading Transistor amplifiers, Darlington
pair. Emitter follower, source follower.
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