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Design the transistor amplifier shown in the following Figure to be biased at IC=1 mA. Clearly show/justify your calculations and component selection to determine its voltage gain. Assume B = 100 1) Verify your design using a MULTISIM or Pspice simulation. VCC10V RC O VC. REB w vaig VRE 2) If vsig is a triangle waveform, determine the maximum amplitude that vsig can have? Show your calculation. 3) Check to see if a vsig having this amplitude will indeed be valid for active mode of operation. Show and justify your results. 4) Run a simulation using the circuit of the above figure. Use the DC biasing arrangement you designed in part a) and a 10 Hz sinusoidal vsig with amplitude close to the one you calculated earlier in c). Plot the input and output waveforms. 5) Increase vsig to four times its original amplitude and run another simulation. What do you observe? Comment on and justify your results. 6) Write a report on your solution. You should clearly mention all the steps. Include the MULTISIM/ Pspice circuit diagram of your simulation circuit. Other Information: Include any hand calculations that you perform to verify your design.
VocoV Red Per Vsig - 0.01 mA 100 Design the transistor amelifier ICIA , P = 100 Ge Analysis Solution Ic=BIB *** - set value RIB Apply KVL - VEB+ Ig RBS + VE SO - 3 +(0.01xco) R8B+0.450 - RBB = 230 K2 To get value of Rc According to rule of thumb Ves BV Another saletin Ras= Vas-VRE 3-2. Veestay Salve equ. Rc - Veolo=Vout 23K EKss Nag=30 - 4H KL VEE Assume Vc = + Vcc Vc = 5x1 = 3.33 V » Vc = Vec- IRC 1x103 Rc - lo- . 2. Rc = 6.67 K12 Small signal parameters Sets = 2.04 MAIMU 25 = 2500/2 3.1 2.5 X2 RBBB + w Vi Rc Vo ac analysis V. Im Vx Re Vi = Vx Usig = Vx + ( 12 ) RBB V. Voltage gain Av - : Vi overall voltage gain Gu = Av - Rin Rin+R8B -SM VKRC = -9m Re = -(6.0466500) = - 2668 VN -266.8 -266.8 25.236--2.87 VIV - 2.5 +R88 X