Solve the following using the remodel. 1. The dc emitter current IE is: A. 2.62 mA B. 2.99 mA 2. The ac resistance re is: A. 23.01 Ω B. 9.92 Q 3. The amplifier's current gain (Ai amp) is: C. 3.78 mA C. 26 mQ D. 3.52 mA D. 893 Q

Find the desired in point 54 with finding what you can find.

Use 2 decimal places A CS JFET amplifier has gm= 6.82 mS, with a drain resistance of 1.13 kohms and load resistance of 685.52 ohms. Voltage gain (absolute value) is   Round your answer to 2 decimal places.

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.

4. A certain common-emitter amplifier has a voltage gain of 100. If the emitter bypass capacitor is removed, (a) The circuit will become un stable (c) The voltage gain will increase (b) the voltage gain will decrease (d) the Q-point will shift 5. For a common-collector amplifier, RE =1002, r'e= 10 2, and Bac=150. The ac input resistance at the base is: (a) 1500 2 (b) 15 k2 (c) 110 Q (d) 16.5 k2 6. If a 10 mV signal is applied to the base of the emitter-follower circuit in Question 5, the output signal is approximately (a) 100 mV (b) 150 mV (c) 1.5 V (d) 10 mV