Miami Dade College Spring 2024---EET 1141C Mid-Term Exam To Be Concluded Without the Aid of any Assistance. NAME: MDC ID: Instructions: Read the Instructions carefully. Please Make Sure to conclude

all Three Portions of the Design Examination without the Aid of anyone. Use the Provided Space to Show how you arrived at your results. The Use of a Calculator is permitted. Please Be Sure to show all the Process involved in arriving at your Design conclusions. You will be given a design Specification that is Unique to you alone. Do Not Compare Notes with Others. V2 15 V ~ C2 HH V1 1μF 0.005 Vrms 3kHz 0° R3 R2 www R4 U1 C1 H 10μF 2N3904 R1 C3 HH R5 100μF >R8 3-stage Cascaded Amplifier www R9 U2 C4 HH 10μF 2N3904 R6 R7 C6 R10100μF R13 U4 2N3904 C5 >R14 HH 100μF >R11 Using a series of steps, you will design a 3 stage Cascaded Amplifier Shown above that is Unique to you Alone and different from everyone else in the class. Question 1: Design of the Common-Emitter Amplifier Common-Emmitter Amplifier V1 -15 V V2 1mVrms 3kHz 0° C1 HH 10μF R2 RC U1 2N3904 >RE1 R1 Step 1: Acquiring Your Individual Specification: DC Bias values of Ic,Q and VCE,Q C2 HH 10μF RE C3 100μF 1 Rload Miami Dade College Spring 2024---EET 1141C Mid-Term Exam To Be Concluded Without the Aid of any Assistance. (last 2 digits of your MDC ID) Ic(mA) = 2 + 200 DC Bias Value of VCE (Last 2 digits of your MDC ID) VCE (V) = 6- 100 Choose the Swamping Resistor RE1 = 22 2 or 33 2; Emitter Bias Resistor RE = 1KQ and assume a Beta, ẞ= 150 for the Q2N3904 Record Your Specifications in the Spaces Provided Below VCE = IC= IB= IE= Step 2: Calculate the DC operating point of all the Transistor Terminals Using the Values above, Calculate the following (a) Emitter Voltage VE VE = (b) Base Voltage VB = (c) Collector Voltage; VC VC = (d) Collector Resistance, RC RC= 2 Miami Dade College Spring 2024---EET 1141C Step 3: Design the Voltage Divider Bias Circuit Mid-Term Exam To Be Concluded Without the Aid of any Assistance. Using the Principles of a non-stiff voltage divider Bias, that is using the Thevenin's equivalent Circuit, design R1 and R2 such that the design Values of VB and B are met. Show your calculations in the space provided below. R1= R2= Next calculate the AC-Model Emitter Resistance re of the BJT Using your design Quiescent operating. Assume that the operating temperature is 25°C re= Step 4: Calculate the Voltage Gain Next Using the value of re and your circuit parameters Calculate the Value of the ac or small-signal Voltage Gain Av. Av= Step 5: Simulation and Verification (a) Setup the Common-Emitter Amplifier on Multisim using your design parameters. Simulate the Circuit and display the DC operating point of the amplifier using the Multisim Probe feature. (b) Using an Input signal of 5mVrms Sinusoidal Signal at 3KHz, perform a transient simulation. Display the result for at least 5 Periods. (c) Perform an AC frequency sweep of the Amplifier from and Initial frequency of 1Hz to a final frequency of 100MHz. Your display window should be set to Decades and your initial gain in Decibels should be set to -50db and Final Gain to 50 decibels. Display the results. What is the maximum gain of your amplifier in Decibels? What is the maximum unitary gain? 3 Miami Dade College Spring 2024---EET 1141C Mid-Term Exam To Be Concluded Without the Aid of any Assistance. Question 2: Design of the Common-Collector Amplifier or Emitter Follower. Common Collector Amplifier V1 -15V ~ V2 1mVrms 3kHz 0° C1 = HH RB_Bias 10μF U1 2N3904 C3 HH RE3 100μF RLoad_final Using the Value of R1, R2 and RE from the Common-Emitter amplifier Circuit as Rcc_Bias1, as Rcc_Bias2 and RE3 and a large Resistor Value such as 100KQ for RLoad_Final. Step 1: Calculating the DC Bias and Quiescent Point Calculate the DC emitter Current. IE= Calculate the DC Collector Current IC= Calculate the DC Base Current IB= Next calculate the AC-Model Emitter Resistance re of the BJT Using your design Quiescent operating. Again, Assume that the operating temperature is 25°C. Miami Dade College Spring 2024---EET 1141C Mid-Term Exam To Be Concluded Without the Aid of any Assistance. re= Step 2: Calculate the Voltage, Current and Power Gain Next Using the value of re and your circuit parameters Calculate the Value of the ac or small-signal Voltage Gain Av. Av= Next; Calculate the Current gain A¡ of the Emitter Follower Ai= Finally Calculate the Power Gain of your Emitter Follower Ap=_ Step 3: Simulation and Verification (d) Setup the Common-Collector Amplifier on Multisim using your design parameters. Simulate the Circuit and display the DC operating point of the amplifier using the Multisim Probe feature. (e) Using an Input signal of 5mVrms Sinusoidal Signal at 3KHz, perform a transient simulation. Display the result for at least 5 Periods. (f) Perform an AC frequency sweep of the Amplifier from and Initial frequency of 1Hz to a final frequency of 100MHz. Your display window should be set to Decade increment of Frequency and your initial gain in Decibels should be set to -50db and Final Gain to 20 decibels. Display the results. What is the maximum gain of your amplifier in Decibels? What is the maximum unitary gain? Q3: The 3-Stage Cascaded Amplifier 5