Consider the Darlington pair and emitter-follower portions of the circuit in Figure 11.46 . The parameters are:
Want to see the full answer?
Check out a sample textbook solutionChapter 11 Solutions
Microelectronics: Circuit Analysis and Design
- What is the voltage gain of the common-emitter amplifier as shown? Assume βF = 135, VCC = VEE = 10 V, R1 = 20 kΩ, R2 = 62 kΩ,RC = 13 kΩ, and RE = 3.9 kΩ.arrow_forward1. Derive the Avf, Rif, Rof, R’of for the circuit shown in figure 1. For each transistor theh-parameters, hie and hfe are equal.arrow_forwardWe have an amplifier identical to that of Figure 11.10 on page 567, except that RD is changed to 2 kΩ and the dc sources are changed to VDD=10 V and VGG=3 V. The drain characteristics for the transistor are shown in Figure 11.7 on page 564. Use load-line analysis to determine the maximum, minimum, and Q-point values of vDS.arrow_forward
- Using the characteristic curve (please refer to the uploaded characteristic curve) of the NPN transistor of the class A Series - Fed Amplifier, shown in Figure 1 belowarrow_forward2. A load of 8Ω is supplied by a single-switch Direct Current (DC) chopper with an inputvoltage of 40V. The switching frequency is 800Hz, the duty ratio is 0.4, and thetransmission voltage drop of the transistor is 2.4V a. Draw the chopper circuit presented in the question b. Find the switching period with the duty time of BJT c. Draw the load voltage, load current, BJT current, BJT voltage along two periods d. Find the output voltage. Is the achieved load voltage the average value or the effectivevalue e. Find the output power f. Find the average value and effective value of BJT current g. Find the power loss of BJT h. Find the DC source current i. Find the circuit efficiencyarrow_forward13. Bipolar Junction Transistor is considered as: gate-controlled device current-controlled device voltage controlled device base controlled device 18. Which BJT configuration provides very high output impedance? Common Base Common Collector Common Emitter Common Gate 19. Which BJT configuration provides high current gain? Common People Common Emitter Common Collectar Common Basearrow_forward
- Design the bias circuit to give aQ-point of IC = 20 μA and VC E = 0.90 V ifthe transistor current gain is βF = 50 and VB E =0.65 V. What is the Q-point if the current gain ofthe transistor is actually 125?arrow_forwardConsider the circuit of Figure 2.1 using Vcc = 12 volts, Rb = 220 kΩ and Rc = 1 kΩ. Compute the theoretical base, emitter and collector voltages. Kindly show process in solutionarrow_forward(a) Suppose υbe(t) = 0.005 sin 2000πt V in the bipolar amplifier as shown . Write expressions for υbe(t), vce(t), and υCE(t). (b) What is the maximum value of IC that corresponds to the active region of operation?arrow_forward
- For the BJT amplifier circuit of figure below with the following parameters:β = hfe ≈ 250, re= 20.3Ω, and ro = 1/hoe ≈ ∞ Ω, Zb= 50.26KΩ determine:(a) Draw the Ac equivalent circuit in re- model and hybrid model.(b) hie, , Zi , and Zo'(c) Av using h- model.(d) Avs and ac output voltagearrow_forwardTopic: Input and Output Characteristics of Transistor in Common Base Configuration Answer in 2-3 sentences each. Need a kind tutor that will do it for me. Thank you! 1. Define "a" (alpha). 2. What is early effect? 3. What is the power gain of CB configuration?arrow_forwardThe given circuit is a 2N4403 PNP common collector amplifier. Let VCC=12V, VEE=-12V, R1=52.5kΩ, R2=33kΩ, and RE=2.5kΩ. Determine IB, IC, IE, VB, VC, and VE. Start by initially assuming |VBE| =0.7V or and assuming a value of beta (β). Where to look for the value of β? (Hint: It’s in the transistor model assigned). Determine the input voltage (may extend from the supply voltage range) where the BJT goes from “cut-off to active” and where it goes from “active to saturation”. Assume VCE=0.3V (edge of saturation), RL=500Ω, and C1, C2→∞.arrow_forward
- Introductory Circuit Analysis (13th Edition)Electrical EngineeringISBN:9780133923605Author:Robert L. BoylestadPublisher:PEARSONDelmar's Standard Textbook Of ElectricityElectrical EngineeringISBN:9781337900348Author:Stephen L. HermanPublisher:Cengage LearningProgrammable Logic ControllersElectrical EngineeringISBN:9780073373843Author:Frank D. PetruzellaPublisher:McGraw-Hill Education
- Fundamentals of Electric CircuitsElectrical EngineeringISBN:9780078028229Author:Charles K Alexander, Matthew SadikuPublisher:McGraw-Hill EducationElectric Circuits. (11th Edition)Electrical EngineeringISBN:9780134746968Author:James W. Nilsson, Susan RiedelPublisher:PEARSONEngineering ElectromagneticsElectrical EngineeringISBN:9780078028151Author:Hayt, William H. (william Hart), Jr, BUCK, John A.Publisher:Mcgraw-hill Education,