UNIT I SEMICONDUCTOR DIODE AND BJT
PN Junction – Current components in a PN diode – Junction capacitance – Junction diode switching time – Zener diode – Varactor diode – Tunnel diode – Schottky diode – Transistor Structure – Basic Transistor operation – Transistor characteristics and parameters – Transistor as a switch and amplifier – Transistor bias circuit – Voltage divider bias circuits – Base bias circuits – Emitter bias circuits – Collector feedback bias circuits – DC load line – AC load line – Bias stabilization – Thermal runaway and thermal stability.
UNIT II FET, UJT and SCR
JFET characteristics and parameters – JFET biasing – Self bias – Voltage divider bias – Q point – Stability over temperature – MOSFET – D-MOSFET and E-MOSFET – MOSFET characteristics and parameters – MOSFET biasing – Zero bias – Voltage divider bias – Drain feedback bias – Characteristics and applications of UJT, SCR, DIAC, TRIAC.
UNIT III AMPLIFIERS
CE, CC and CB amplifiers – Small-signal low frequency transistor amplifier circuits –
h-parameter representation of a transistor – Analysis of single stage transistor amplifier circuits – Voltage gain – Current gain – Input impedance and output impedance – Frequency response – RC coupled amplifier – Classification of Power amplifiers – Class A, B, AB and C Power amplifiers – Push-Pull and Complementary-Symmetry amplifiers – Design of power output, efficiency and cross-over distortion.
UNIT IV FEEDBACK AMPLIFIERS AND OSCILLATORS
Advantages of negative feedback – Voltage/current, series/shunt feedback – Positive feedback – Conditions for oscillation – Phase shift – Wein Bridge – Hartley – Colpitts and Crystal oscillators.
UNIT V PULSE CIRCUITS AND POWER SUPPLY
RC wave shaping circuits – Diode clampers and clippers – Multivibrators – Schmitt triggers – UJT saw-tooth oscillators – Single and poly-phase rectifiers and analysis of filter circuits – Design of zener and transistor series voltage regulators – Switched mode power supplies.