FIRST SEMESTER B. E (Common to all branches)
BASIC ELECTRONICS
Sub Code : 06 ELN 15 / 06 ELN 25 IA Marks : 25 Hrs/ Week : 04 Exam Hours : 03 Total Hrs. : 52 Exam Marks : 100
PART – A
UnitI SEMICONDUCTOR DIODES AND APPLICATIONS: pn junction diode, Characteristics and Parameters, Diode approximations, DC load line, Temperature dependence of pn characteristics, AC equivalent circuits, Zener diodes Halfwave diode rectifier, Ripple factor, Fullwave diode rectifier, Other fullwave circuits, Shunt capacitor  Approximate analysis of capacitor filters, Power supply performance, Zener diode voltage regulators, Numerical examples as applicable (T12.1,2.2,2.3,2.4:2.5,2.6,2.9,R1 20.1, 20.2, 20.3, 20.4, 20.8; T1 3.5, 3.6). 07 Hours
UnitII TRANSISTORS: Bipolar Junction transistor, Transistor Voltages and currents, amplification, Common Base, Common Emitter and Common Collector Characteristics, DC Load line and Bias Point. 06 Hours
UnitIII BIASING METHODS: Base Bias, Collector to Base Bias, Voltage divider Bias, Comparison of basic bias circuits, Bias circuit design, Thermal Stability of Bias Circuits (Qualitative discussions only). (For Units II & III: T1 4.1,4.2,4.3,4.4,4.5,4.6,5.1,5.2,5.3,5.4,5.5,5.7,5.9). 06 Hours
UnitIV OTHER DEVICES: Silicon Controlled Rectifier (S.C.R), SCR Control Circuits, More S.C.R applications; Unijunction transistor, UJT applications, Junction Field effect Transistors(Exclude Fabrication and Packaging), JFET Characteristics, FET Amplifications, Numerical examples as applicable (T1  19.1, 19.2, 19.3, 19.7, 9.1, 9.2, 9.4) 07 Hours
PART – B
UnitV AMPLIFIERS & OSCILLATORS: Decibels and Half power points, Single Stage CE Amplifier and Capacitor coupled two stage CE amplifier(Qualitative discussions only), Series voltage negative feedback and Additional effects of Negative feed back(Qualitative discussions only), The Barkhausen Criterion for Oscillations, BJT RC phase shift oscillator, Hartley ,Colpitts and crystal oscillator ( Qualitative discussions only) Numerical problems as applicable. (T1  8.2, 12.1, 12.3, 13.1, 13.7; R117.15, 17.16, 17.17, 17.18, 17.19) 06 Hours
UnitVI INTRODUCTION TO OPERATIONAL AMPLIFIERS: Ideal OPAMP, Saturable property of an OP AMP inverting and non inverting OPAMP circuits, need for OPAMP, Characteristics and applications  voltage follower, addition, subtraction, integration, differentiation; Numerical examples as applicable Cathode Ray Oscilloscope (CRO) (T2 11.111.8, 9.6) 06 Hours
UnitVII COMMUNICATION SYSTEMS: Block diagram, Modulation, Radio Systems, Superhetrodyne Receivers, Numerical examples as applicable (T2  13.1, 13.2, 13.4, 13.5) NUMBER SYSTEMS: Introduction, decimal system, Binary, Octal and Hexadecimal number systems, addition and subtraction, fractional number, Binary Coded Decimal numbers. 07 Hours
UnitVIII DIGITAL LOGIC:, Boolean algebra, Logic gates, Halfadder, Fulladder, Parallel Binary adder. (For Number Systems & Digital Logic: T2:.14.1 to 14.14) 07 Hours
TEXTBOOKS: 1. (T1) Electronic Devices and Circuits: David. A. Bell; PHI, New Delhi, 2004 2. (T2) Electrical and Electronics & Computer Engineering for Scientists and Engineers Second Edition K.A. Krishnamurthy & M.R.
Reference: http://www.vtu.ac.in/
