Design and Simulation of a Multistages Common-Emitter, Common-Collector, AC Voltage Amplifier
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Abstract
The main function of the ampifier is to increase the signal strength, in terms of its voltage or current. In this research, a multistages ac voltage common-emitter amplifer and common-collector amplifier with a single supply of +15 V was designed. The objective is to design an amplifier for amplifying a small ac signal from a transducer. The transducer has an output impedance of 10 k. The amplifier will have a small-signal gain in order of about 1500 and a small-signal bandwith ranging from 100 Hz to 20 kHz. It will drive a load of 300 Ω. The entire circuit consists of a first stage common-emitter configuration gain amplifier, another second stage common-emitter configuration gain amplifier, and a third stage buffer unity gain common collector amplifier. The three-stages was capacitor coupled. The overall gain of the entire amplifier is the product of the first-stage gain, the second-stage gain, and the third-stage gain. A method called short-circuit time constants was used to determine the apropriate coupling and bypass capacitors. The overall circuit was then simulated by using NI Multisim. The magnitude of the overall gain of the circuit was obtained by performing an interactive analysis and simulation. The frequency response of the amplifier was obtained by performing an AC sweep analyses and simulation. It can be showed that the amplifier’s overall gain obtained from simulation is in agreement with the calculated results. The simulated result for the frequency responses were also in agreement with the requirement
References
Theodore F. Bogart, Jr., Electronic Devices and Circuits. 3rd Edition, Macmillan Publishing Company. Ontario, 1993, pp. 455 - 456
Tutorialspoint SimplyEasyLearning, “Multi-stage Transistor Amplifier”, [Online]. Available: https://www.tutorialspoint.com/amplifiers/multi_stage_transistor_amplifier.htm [Accessed: June 11, 2021].
J. Vuolevi and T. Rahkonen, "The effects of source impedance on the linearity of BTJ common-emitter amplifiers," 2000 IEEE International Symposium on Circuits and Systems (ISCAS), 2000, pp. 197-200 vol.4, doi: 10.1109/ISCAS.2000.858722.
Xiao-Hong Wu, et al., Simulation and Analysis of the Common-Emitter Circuit in Analog Electronics Teaching. Proceedings of 2011 International Conference on Electronic Engineering, Communication and Management (EECM 2011) Beijing China, 2011
R. S. Assaad and J. Silva-Martinez, "A Graphical Approach to Teaching Amplifier Design at the Undergraduate Level," in IEEE Transactions on Education, vol. 52, no. 1, pp. 39-45, Feb. 2009, doi: 10.1109/TE.2008.917190.
Dan Dan-Abia, Akaninyene Obot, and Kufre Udofia, “Design and Analysis of a Multistage Common Emitter Amplifier for Low Frequency Applications,” in EJERS, European Journal of Engineering Research and Science, vol. 4, no. 10, pp. 87 – 92, October 2019, doi: 10.24018/ejers.2019.4.10.1431
H. Babaie, "A technique to stabilize the output voltage level of an emitter follower," [1989] Proceedings. The Twenty-First Southeastern Symposium on System Theory, 1989, pp. 524-526, doi: 10.1109/SSST.1989.72523.
D. L. Rode, "Output resistance of the common-emitter amplifier," in IEEE Transactions on Electron Devices, vol. 52, no. 9, pp. 2004-2008, Sept. 2005, doi: 10.1109/TED.2005.854277.
I. M. Pandiev and E. C. Stoimenov, "Design and Development of Low-Power Multistage Amplifier Laboratory Kit for Electronic Engineering Education," 2019 X National Conference with International Participation (ELECTRONICA), 2019, pp. 1-4, doi: 10.1109/ELECTRONICA.2019.8825602.
I. M. Pandiev and E. C. Stoimenov, "Development of Single-Transistor Amplifier Modular Laboratory Kits for Electronic Engineering Education," 2020 XI National Conference with International Participation (ELECTRONICA), 2020, pp. 1-4, doi: 10.1109/ELECTRONICA50406.2020.9305170.
Dennis L. Feucht, Handbook of Analog Circuit Design. 1st edition. Academic Press Inc. California, 1990, pp. 12 – 13
Jacob Millman and Arvin Grabel, Microelectronics. 2nd McGraw-Hill International Edition. McGraw Hills. 1987, pp. 392 – 393
Cadence System Analysis, “Common-Emitter Transistor Amplifier Design”, Available: https://resources.system-analysis.cadence.com/blog/msa2021-common-emitter-trans istor-amplifier-design [Accessed: June 11, 2021].
Adel S. Sedra and Kenneth C. Smith, Microelectronic Circuits. 7th Edition. Oxford University Press. New York Oxford, 2015, pp. 470 – 471 pp. 697 - 698
The George Washington University, School of Engineering and Applied Science, Department of Electrical and Computer Science, Engineering Electronics Laboratory: Tutorial #6: Designing a Common-Collector Amplifier, 1-2, 2015.Available:https://www2.seas.gwu.edu/~ece20/spring15/labs/tutorials/ECE_2115_Tutorial_6_Designing_a_Common_Collector_Amplifier.pdf
Paul Horowitz and Winfield Hill, The Art of Electronics. 3rd Edition. Cambridge University Press. New York, 2015, pp. 83 - 84
Robert Boylestad and Louis Nashelsky, Electronic Devices and Circuit Theory. 5th Edition. Prentice-Hall International Edition. New Jersey, 1992, pp. 482 - 483
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