Given in the figure is a two-stage amplifier design that employs negative feedback. Answer the following questions. Use the notation (R1 + R2 + ... + Rn) for series resistors and (R1 || R2 || ... || Rn) for parallel resistors for clarity and ease. Assume that the transistors are already biased properly in the saturation region and ro1 = ro2 → ∞. Also assume that the capacitors have infinite capacitance. 1.) Find the expression for the open loop gain Av 2.) Derive the resistance Rin which is the resistance that can be seen at the input port of the amplifier

d. For the feedback amplifier,. determine the base, emitter, and collector voltages of each transistor. 12 V 220 2 P-80 -160 1.8 MA

Design a collector-feedback circuit using with Vcc = 5 V, Ic = 10 mA, and VCE = 1.5 V.

I need the expert's solution correctly and fully handwritten.

To keep inter stage loses to minimum in multistage amplifier, ................is required.

Perform an ac analysis. Represent the amplifier by its ac equivalent circuit and discuss the input resistance at the base and the output resistance. (You can draw the circuit by hand on paper and can paste the image)

(b) The multistage amplifier circuit of Figure Q.2(b) have the following parameters: Qı and Q2: B= 200, VBE = 0.7 V, VT = 26 mV , VA=∞ Given that Icọ1 = 2 mA and VCEQ1 = 2 V. (i) Determine the value for R84. List the assumption/approximation made in the analysis. (ii) Sketch and label the small-signal hybrid-t equivalent circuit at midband frequency range. (iii) Calculate the small signal hybrid-n model parameters: gm and ra for Qı and Then, determine Zi2 and Zo. VSI (iv) Find +15 V TU MA RBI 100 k2 UNIVERSITI { Rc 3.3 k2 RB3 10 kN IcQI Q2 C4 Qi VCEQI Ro TEO ► 50 k2 Rs 100 2 RL V. 10k2 RE 2 kN RB4 C3 Zi2 Z, Figure Q.2(b) AYSIA

Figure 6 shows a circuit where feedback is provided between the drain and gate of the transistor M1 Q6 Draw the small signal equivalent circuit of the open loop circuit obtained by breaking the loop at the gate of transistor M1 (suitable for the analysis in the mid band frequency range). Consider Cg as short circuit in the model and state any assumption. (a) (b) State the necessary conditions for the oscillation to occur in the circuit. Using the conditions from (b), derive an expression for the amplifier oscillation frequency fo. (c) Derive the necessary condition for the oscillation to occur in the circuit and state if you can conclude that the circuit will oscillate when considering the values of the inductances L2 = 8 LI = 2 mH; capacitors C = 2 nF; transconductance of the transistor gml = 1.4 mS; and resistors R1 = R2 = Rs : 10 k2. (d) %3D L2 L, R, Cg. C Vout Cp M1 R2 CG Rs Cs Vss = 0 V Figure 6

C. A variable capacitor. O d. An amplifier. When operating in the saturation region, the current gain 'B' of the bipolar transistor increases Select one: OTrue O False Assume Is= 8x 105 A, B-100, and VA =-. For the circuit shown below and for -0.5 mA, the value of the transconduce Vcc=2 V Q1