BM 2204 ELECTRONIC CIRCUITS Lecture Notes for BME - Third (3rd) semester
BM 2204 Lecture Notes
UNIT I DIODE APPLICATIONS AND TRANSISTOR BIASING
Rectifiers – HWR, FWR, Bridge rectifier with and without capacitor and pie filter. Clipperclampers
– voltage multiplier circuits - Operating point of the bi-polar junction transistor –
Fixed bias circuit – Transistor on saturation – Emitter stabilized Bias Circuit – Voltage
divider bias – Transistors switching network – Trouble shooting the Transistor (In circuit
testing)- practical applications. Biasing the FET transistors - CMOS devices – MOSFET
UNIT II SMALL SIGNAL AMPLIFIERS
Two port network, h-parameter model – small signal analysis of BJT (CE and CC
configurations only) –– high frequency model of BJT – (CE configuration only) - small
signal analysis of JFET (CS configuration only) - Frequency response of BJT and FET.
UNIT III FEEDBACK AMPLIFIER AND OSCILLATORS
Basic of feedback system (block diagram approach) – Types of feedback amplifier – Basic
principles of oscillator. Audio oscillators – RC phase shift and wein bridge oscillator. RF
oscillators – Heartly and Collpit oscillator – Crystal oscillator,Multivibrators.
UNIT IV POWER AMPLIFIERS
Definition – Types of power amplifiers – Class A (series fed – transformer coupled )- Class
B amplifier – Class-B push-pull amplifier – Complimentary symmetry type - Class-C
amplifier – Heat sinking .
UNIT V VOLTAGE REGULATIONS
Shunt voltage regulator – Series voltage regulator – current limiting – feedback technique
– SMPS (Block diagram approach) – DC to DC converter - Three terminal IC regulators
(78XX and 79XX).