UNIT V

OSCILLATORS : 
Condition for Oscillations, RC-Phase Shift Oscillators with Transistor and FET, Hartley and Colpitt’s Oscillators, Wien bridge Oscillator, Crystal Oscillator, Frequency and Amplitude Stability of Oscillators

REFERENCE BOOKS :

1.       Integrated Electronics – J. Millman and C.C. Halkias, McGraw-Hill, 1972.
2.       Micro Electronic Circuits – Sedra A.S. and K.C. Smith, Oxford University Press, 5th ed.
3.       Electronic Devices and Circuits - Theodore F. Bogart Jr., J. S. Beasley and G. Rico, Pearson  
          Edition,  6th Edition, 2004.
4.       Electronic Circuit Analysis and Design – Donald A. Neaman, McGraw Hill  


LECTURE  NOTES :




ASSIGNMENT - I (Theory) :



ASSIGNMENT - II (Problems) :



Previous JNTU Questions :

1. Substantiate the requirement of positive feedback in amplifier for oscillations. Relate the requirement to Barkhausen Criterion.

2. With the help of neat circuit diagram, explain how sustained oscillations are obtained in  RC  phase  shift  BJT  based  oscillator.  Derive  the  expression  for  frequency  of oscillation.

3. Give the two Barkhausen conditions required in order for sinusoidal oscillations to be sustained. 

4. Draw the circuit diagram of RC phase - shift oscillator and derive the expres- sion for frequency of Oscillations & condition  for sustained  Oscillations. 

5.  





Previous GATE Questions :