Question

A common-emitter BJT amplificr is shown in Fig.8.1. Note the DC biasing values and the BJTsmall-signalmodel parameters from the class-signment #9 on DC Bia ing. Neglect the value of Rs in your calculations, k1 Rs-a k2: 1· Cal ulatethesmall-agalpannetas ofthe amplifi randcompletethecalculated valuesinTable8-1 Smalls-signal voltage gai, AVk Small-signal input resistance,k, Small-signaloutput resistance, Ro VW RC 2k C2 RB 570k Rs C1 1 10uP 0.1m 1 Vs CE RE 2k SINE(0 1mV 1kHz 0 0 00) tran 0 2ms 0 1us Fig.8.1. Table 8-1 Values and Amplificr Paramcters R.( Ω Caculted Simulate the amplifier by LTspice MultisimOrCad to plot the output voltage vi(t) across the load resistance RL. Apply a sinusoidal input voltage of 1 mVpeakat 1 kHz and run the simulation for 2ms resistance R.Record To findtheoutputre istance R.nnthesinulation forRL=m(Orsay10ΜΩ). 10kC2 dal ultetheoutputr sistneReof the amplificr from the equation 3. From the plots of the imput signal voltage vi() and the output voltage v(), find the voltage gain Av and the input 4. Assignment # 8-BIT CE-Amplifier Page # 1 of 2 full load Complete the simulated values in Table 8-1 5. Change Rc-10K2 and Compare the output voltage with the sinusoidal input voltage. Explain any differences or deviations. Why? 6. Attach the completed class Assignment #10on small-signal ac equivalent circuit ofa BJT CE amplifier. By submitting this assignment on the Canvas drop-box, I certify that this assignment is the result of my own efforts.

Answer 1

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