/cc = +10V CC Rc3 2 k2 VBB = +5V %3D OVc Rg ww 100 k2 а. Find the voltages at the base and collector nodes, and the currents in all branches (Ip, Ig, I) for the circuit below. Assume B= 100. What's the BJT's mode of operation? b. What if ß turned out to be higher by 12%, what would be the operating point, and what would be the BJT's operating mode? c. Redesign the circuit by choosing a new value for Rc that guarantees operation in the active mode for transistors with Branging between 50 and 150. d. What range of collector voltages would the circuit exhibit over the range of Ø's?

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

Consider the source follower circuit in Figure shown below, IQ = 10 mA VTP = -2 V, Kp = 5mA/V2, RL = 680 n, and 2 = 0.01 V-1. Where Kp=1/2 k'p(W/L). (i) What configuration is this circuit? Use T Model to Determine the small-signal voltage gain (V/Vi). (ii) (iii) What is the formula for Vo? (iv) What is the formula for Vi? Determine the small-signal voltage gain (VVi). (v) (vi) Find the output resistance Ro. V* =5 V 200 k2 V--5 V