DEVRY ECET220 WEEK QUIZ 4 AND 6

(TCO 2) For the circuit in the following figure (Chapter 3, Figure 3-29, on page 135), V CC =18 V, R 1 =20 K?, R 2 =4.7 K?, R C=1 k?, R E1 =220 ?, R E2 =220 ?, R L =220 ?, R s =1 K? . Determine the DC emitter voltage base V E with respect to ground.

Question 2. Question : (TCO 2) For the circuit in the following figure (Chapter 3, Figure 3-29, on page 135), V CC =18 V, R 1 =10 K?, R 2 =2.2 K?, R C=1 k?, R E1 =220 ?, R E2 =220 ?, R L =220 ?, R s =1 K? . Determine the DC current I E flowing through resistors R E1 and R E2 .

Question 3. Question : (TCO 2) For the circuit in the following figure (Chapter 3, Figure 3-29, on page 135), V CC =18 V, R 1 =10 K?, R 2 =4.7 K?, R C=1 k?, R E1 =220 ?, R E2 =220 ?, R L =220 ?, R s =1 K? . Determine the voltage at the DC operating point (Q-point) V CEQ.

Question 4. Question : (TCO 2) For the circuit in the following figure (Chapter 3, Figure 3-29, on page 135), V CC =18 V, R 1 =10 K?, R 2 =2.2 K?, R C=1 k?, R E1 =220 ?, R E2 =220 ?, R L =5 K?, R s =1 K? . Determine the AC voltage gain.

Question 5. Question : (TCO 2) For the circuit in the following figure (Chapter 3, Figure 3-29, on page 135), V CC =18 V, R 1 =10 K?, R 2 =2.2 K?, R C=3 k?, R E1 =220 ?, R E2 =220 ?, R L =5 K?, R s =1 K? . Notice that the input voltage V in is at the point between R s andC 1 . Assume ? ac = ? DC =100 . Determine the power gain A P . .

Question 6. Question : (TCO 4) For the E-MOSFET Common-Source Amplifier with Voltage-Divider Bias circuit shown below (Chapter 4, Figure 4-41, on page 207), V DD =22 V, R 1 =10 M?, R 2 =2.2 M?, R D=5 k?, R S =2.2 K?, C 1 =0.1 uF, C 2 =10 uF, C 3 =0.47 uF. Assume V GS =?2.0 V ; and g m =3000 umho . Determine the following:

• DC source voltage V S

• DC Drain voltage V D

• The AC output peak-to-peak voltage V out( pp ) is input voltage is V in( pp ) =200 mV

(TCO 5) For the circuit in the following figure (Figure 6-20, on page 326), if R f =80 K? and R i =10 K? , determine the closed-loop gain.

Question 2. Question : (TCO 5) For the circuit in the following figure (Chapter 6, Figure 6-24, on page 328), if the closed-loop gain is -250, Ri =2.2 K , determine R f .

Question 3. Question : (TCO 5) For the circuit in the following figure (Chapter 8, Figure 8-7, on page 389), if R 1 =15 K? and R 2 =15 K? , and assume + V out_max =6 V and 1 V out_max =?6 V , determine the hysteresis voltage.

Question 4. Question : (TCO 6) For the circuit in the following figure, if R 1=4.7 K?, R 2 =4.7 K?, and R 3 =4.7 K? , determine the value for R f so that it will function as an averaging amplifier (meaning the output voltage will be the average value of the input voltages).

Question 5. Question : (TCO 6) For the circuit in the following figure, if R 1 =47 K?, R 2 =10 K?, R 3 =30 K?, R f =10 K?, V 1 =1 V, V 2 =2 V, V 3 =4 V , determine the value of output voltage V out .

Question 6. Question : (TCO 6) For the instrumentation amplifier shown in the following figure (Chapter 12, Figure 12-2, on page 549), the values for R 3 , R 4 , R 5 , R 6 are fixed for a gain of 1 for the differential amplifier. Also, the values of R 1 and R 2 are exactly matched for the same value = R = 20K.

• Determine the value of R G assuming the voltage gainA cl is 600.

• If V in1 =10 mV and V in2 =6 mV , determine the voltage output V out .