5. Derive the expression for the gain (vo/vsig) and input resistance (Rin=v/ib) in the amplifier below. Assume the BJT is biased in forward active region. Rsig + Rc Vo sig Μπ Rin
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- step by step explanation needed. Given a sinusoidal input signal (1 mV amplitude at 5kHz), design a CE-CC amplifier to achieve a 100 mV amplitude sinusoidal signal across a 50ohm load.You are tasked with designing a linear amplifier using an NPN BJT for the circuit shown below. This means the transistor iv curves apply here. The voltages given are Vcc = 14 V and Vs = 1.0 V. The datasheet for the transistor says VBE (ON) = 0.7 V,VCE (SAT) = 0.2 V, and ß = 400. The design should have ic = 12 mA and VCE = 8 V. Find the resistances Rb and Rc that give the required ic and VCE. Vs H Rb M d VBE Rc VCE VccPlease solve with steps
- Hand Calculation: Since you now have the values of R1 and R2 resistors, obtain numeric value of voltage gain Av=Vo/Vi, and numerical values of input and output resistances Ri and Ro. Note that you need to DC analysis first. Do a hand calculation and calculate the DC collector current or IC. This is needed in order to calculate the small signal parameters gm and rπ and in turn to obtain the Av , Ri and Ro Hence, first perform a DC analysis (use the circuit in Figure 1 and take all capacitors open) and assume your transistor has a β=140.Derive the expression for the following in terms ONLY of the small signalparameters and the given circuit components from the hybrid-pi model (Neglect the effect of the BJT’s small signal output resistancero):a.) RINb.) Gmc.) ROUT6) Consider the following multistage amplifier. Draw the corresponding small signal model. Label, Vin, Vo1 and Vo. Do NOT make any approximations. Do NOT perform small signal analysis with this model. Just draw the small signal model. Show your work! Vin Vcc malli Q1 Re1 Vo1 Vcc ww1. Rc2 Q2 Re2 Vo
- Draw the AC equivalent circuit for the circuit below and, thefollowings: a) What is the amplifier configuration and roughly what is its core voltage gain,AV?b) Find the input resistance of the amplifier, Rin (parametrically; non-numerical)c) Find the output resistance of the amplifier, Rout (parametrically; non-numerical), ignore ro.Question is attached as picture.Consider the amplifier shown. Assume that the transistor has the following small signal parameters: A gm : = 4 x 10-³ V² ro= 10 x 10³ a) Draw the small signal model. Assume that the frequency is high and model the capacitors as short circuits. b) Using the above small signal model, perform small signal analysis and determine a numerical value for Av. Show your work! Do not make approximations. c) Using the above small signal model, perform small signal analysis and determine a numerical value for Ri. Show your work! Do not make approximations. Vin 5V W 30K 20K 5V W WWW 2K 500 5V WH 5K C1 C2 Vo
- Q1. For the MOSFET circuit below, input is sinusoidal signal of amplitude IV and frequency 50Hz. Find, the DC operating point, Plot the frequency response and Plot the input, output and transfer characteristics and find out the small signal equivalent. Assume an overdrive voltage of 0.2V Use MOSFET 500nm Library file provided. F Vdd=5V -=80 K R1 (1 1.20FCoonsider the common emitter amplifier shown in figure below. Assume a β of 100, VBE = 0.7V, VT = 25mA and VA = 100V. Draw an equivalent DC model and determine the rπ, transconductance (gm) and ro. Draw an equaivalent AC model using the small-signal model Find an expression for vbe and vo in terms of the input voltageCommon Source MOSFET Amplifier has Select one: a. negative gain b. input impedance that is always very low and output impedance that is always very high, whatever the design is. c. gain that is always less than 1, whatever the design is d. positive gain Next page 55 week 10 material Jump to... 16 CE255/EE255 (01)-