1. SIMULATION OF AMPLIFIERS USING NGSPICE VISHNU V 2 nd Year M.Tech VLSI and Embedded Systems Govt. Model Engineering College, Thrikkakara TECHNICAL WORKSHOP MARATHON 2012

2. ANALYSIS OF AMPLIFIERS USING NGSPICE 2 CONSIDER THE AMPLIFIER SHOWN IN FIGURE

3. MODEL DESCRIPTION OF TRANSISTOR.MODEL GENERIC NPN Q1 C B E GENERIC MODEL TYPEMODEL NAME

4. WHAT IS THE NEED OF COUPLING CAPACITORS IN AN AMPLIFIER ???

5. NEED OF COUPLING CAPACITORS B C E OUTPUT NODE

6. NEED OF COUPLING CAPACITORS B C E OUTPUT NODE

7. WHAT ARE THE WAVEFORMS AT BASE NODE AND COLLECTOR NODE ???

8. NEED OF COUPLING CAPACITORS WAVEFORM AT BASE NODE AND COLLECTOR NODE OUTPUT (COLLECTOR) INPUT (BASE)

9. NEED OF COUPLING CAPACITORS WAVEFORM AT BASE NODE AND OUTPUT NODE OUTPUT INPUT (BASE)

10. AFTER ADDING INPUT COUPLING CAPACITOR B C E OUTPUT NODE

11. INPUT VOLTAGE

12. VOLTAGE AT BASE NODE

13. VOLTAGE AT COLLECTOR NODE

14. OUTPUT NODE VOLTAGE

15. EFFECT OF BYPASS CAPACITOR BYPASS CAPACITOR

16. FREQUENCY RESPONSE PLOT WITH BYPASS CAPACITOR

17. FREQUENCY RESPONSE PLOT WITHOUT BYPASS CAPACITOR

18. ANALYSE BOTH FREQUENCY RESPONSE PLOTS AND MAKE CONCLUSIONS

19. ANALYSIS OF BJT AMPLIFIERS ANALYSE THE FOLLOWING CIRCUIT USING NGSPICE

20. PLOT THE FREQUENCY RESPONSE PLOTS FOR THE CIRCUIT WITH AND WITHOUT Rce RESISTANCE

21. DESIGN A COMMON EMITTER AMPLIFIER FOR THE GIVEN SPECIFICATIONS AND PLOT ITS TRANSIENT AND AC RESPONSE USING NGSPICE ?? (Use Circuit in ELECTRONIC CIRCUITS Lab)

22. DESIGN COMMON BASE AMPLIFIER AND COMMON COLLECTOR AMPLIFIER FOR THE GIVEN CONFIGURATIONS AND PLOT ITS TRANSIENT AND AC RESPONSE USING NGSPICE AND COMPARE THE OUTPUTS (Use Circuit in ELECTRONIC CIRCUITS Lab)

23. MOS AMPLIFIERS DIFFERENT TYPES OF MOS AMPLIFIERS COMMON SOURCE AMPLIFIER COMMON GATE AMPLIFIER COMMON DRAIN AMPLIFIER

24. MODEL DESCRIPTION OF MOSFET.MODEL MOS1 NMOS M1 D G S B MOS1 W=22.0U L=0.6U MODEL NAME MODEL TYPE SCALING PARAMETERS

25. MODEL DESCRIPTION OF MOSFET CONSIDERING ALL THE PARAMETERS.MODEL MOS1 NMOS VTO=0.7 GAMMA=0.5 LAMBDA=0.1 PHI=0.8 CGBO=0.38E-9 CGDO=0.4E-9 CGSO=0.4E-9 CJ=0.57E-3 CJSW=0.12E-9 TOX=9.5E-9 UO=460 LD=0.08E-6 JS=10E-9 MJ=0.5 MJSW=0.4 PB = 0.9

26. COMMON SOURCE AMPLIFIER PLOT THE TRANSIENT RESPONSE AND FREQUENCY RESPONSE OF THE FOLLOWING AMPLIFIER USING NGSPICE

27. OUTPUT WAVEFORMS – TRANSIENT RESPONSE

28. FREQUENCY RESPONSE

29. FREQUENCY RESPONSE WITHOUT BYPASS(CS) CAPACITOR

30. DC ANALYSIS CONTROL LINE O/P CHARACTERISTICS OF MOSFET DC VDS 0 5 0.2 VGS 1 4 1 PLOT -vds#branch vs V(2)

31. TRANSFER CHARACTERISTICS

32. LAB SESSION EXPERIMENTS LOW PASS AND HIGH PASS FREQUENCY RESPONSE DC ANALYSIS OF CE, CB and CC CONFIGURATIONS PLOT TRANSIENT AND FREQUENCY RESPONE OF - CE, CB and CC AMPLIFIERS - CS, CG and CD AMPLIFIERS EXPERIMENTS IN ELECTRONIC CIRCUITS LAB RECORD

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