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B.Tech II Year II Semester   -   Pulse and Digital Circuits

                
T        P        C
 4+1*   0         4               

UNIT I - LINEAR WAVE SHAPING :

Contents: 
High pass, low pass RC circuits, their response for sinusoidal, step, pulse, square and ramp inputs. RC network as differentiator and integrator, attenuators, its applications in CRO probe, RL and RLC circuits and their response for step input, Ringing circuit

UNIT II - NON-LINEAR WAVE SHAPING : 

Contents:
Diode clippers, Transistor clippers, clipping at two independent levels, Transfer characteristics of clippers, Emitter coupled clipper, Comparators, applications of voltage comparators, clamping operation, clamping circuits using diode with different inputs, Clamping circuit theorem, practical clamping circuits, effect of diode characteristics on clamping voltage, Transfer characteristics of clampers

UNIT III - SWITCHING CHARACTERISTICS OF DEVICES   :

Contents:
Diode as a switch, piecewise linear diode characteristics, Transistor as a switch, Break down voltage consideration of transistor, saturation parameters of Transistor and their variation with temperature, Design of transistor switch, transistor-switching times

UNIT IV - MULTIVIBRATORS :
Contents:
Analysis and Design of Bistable, Monostable, Astable Multivibrators and Schmitt trigger using transistors

UNIT V - TIME BASE GENERATORS  :

Contents:
General features of a time base signal, methods of generating time base waveform, Miller and Bootstrap time base generators – basic principles, Transistor miller time base generator, Transistor Bootstrap time base generator, Current time base generators

UNIT VI - SYNCHRONIZATION AND FREQUENCY DIVISION :

Contents:
Principles of Synchronization, Frequency division in sweep circuit, Astable relaxation circuits, Monostable relaxation circuits, Synchronization of a sweep circuit with symmetrical signals, Sine wave frequency division with a sweep circuit

UNIT VII - SAMPLING GATES :

Contents:
Basic operating principles of sampling gates, Unidirectional and Bi-directional sampling gates, Reduction of pedestal in gate circuits, Applications of sampling gates.

UNIT VIII - REALIZATION OF LOGIC GATES USING DIODES & TRANSISTORS  :

Contents:
Time Divison Multiplexing, Types of Pulse modulation, PAM (Single polarity, double polarity) PWM: Generation & demodulation of PWM, PPM, Generation and demodulation of PPM 

Text Books :
1. Pulse, Digital and Switching Waveforms - J. Millman and H. Taub, McGraw-Hill, 
    1991.
2. Solid State Pulse circuits - David A. Bell, PHI, 4th Edn., 2002

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