2) Consider the multi-stage amplifier shown below. Determine Vin if Vo = 3.3V. Because ₂ is so small and le2 is so large, do NOT assume that Ib=0 and do NOT assume that I le Assume that both transistors are in Forward Active and each is described as follows: Q1: B₁ = 100, VBE(ON) = 0.7V Q2: B₂ = 14,VBE (ON) = 0.7V 10V Vin 10V T 2K Q1 500 V01 Q2 220 Vo

6) the "simplest" model of transistor behavior in this problem, i.e., B = o and IB = 0, with forward bias voltage of AVBE = 0.6V. Consider the following circuit with a transistor and two resistors. You may use 5V a) Determine the output when Vin = 0.5V. 9kN Vout Vin 3002 3kN b) Determine the output when Vin = 1.2 V. c) Determine the output when Vin = 3.6 V.

B= infinity, Assume BJTs are identical. Find R such that a DC current of 0.25mA for transistors Q1 and 2. Find Rc that results in 3V DC at he collectors of Q1 and 2. Find the differential voltage gain.

estion 2: Consider the BJT circuit given here. ( Write the input and output loop equations For the given values of Vcc= 10 V, Vin = 4V and resistor values, calculate all current values (IB, IC and IE) and VCE Assume that the ß for the transistor is 100 and the voltage drop across LED connected between Collector terminal and resistor (Rc) 2.1 V. TH i. ii. 111. VIN Vcc Rg=100 kΩ Re=2 kΩ LED 2.1 V B= 100 Based on the above analysis, correctly identify the current mode of operation Cutoff mode Active linear mode Saturation mode