Design a voltage regulator circuit such as shown in Figure P2.21 so that
a.
The value of the input resistance, Ri.
Answer to Problem D2.25P
The value of resistance
Explanation of Solution
Given:
In the circuit,
Evaluating the
Evaluating the value of
Evaluating the value of
Substituting
Substituting
Substituting
Therefore, the value of resistance
b.
The source regulation and the variation in the output voltage.
Answer to Problem D2.25P
The source regulation is 4.44% and the variation in the output voltage is
Explanation of Solution
Given:
In the circuit,
The voltage
Evaluating
Evaluating the
For no load condition evaluating the value
Evaluating the value of
Substituting
Evaluating the value of
Evaluating the value of
Substituting
Evaluating the source regulation:
Therefore, the source regulation is 4.44% and the variation in the output voltage is
c.
The variation in the output voltage and the load regulation.
Answer to Problem D2.25P
The load regulation is
Explanation of Solution
Given:
In the circuit,
The voltage
The load resistance
For
Evaluating the value of
Evaluating the value of
When,
Applying Kirchhoff s current law to determine the current:
Evaluating the value of
Evaluating the load regulation:
Therefore, the load regulation is
Want to see more full solutions like this?
Chapter 2 Solutions
Microelectronics Circuit Analysis and Design
Additional Engineering Textbook Solutions
Principles Of Electric Circuits
Electric Circuits (10th Edition)
Engineering Electromagnetics
Fundamentals of Electric Circuits
Principles and Applications of Electrical Engineering
Fundamentals of Applied Electromagnetics (7th Edition)
- Consider the full-wave rectifier circuit shown below, where• vS(t) is a sinusoidal signal with a peak value (Vs = 5 V).• Diodes are modelled using constant voltage model with VDO = 0.7 V• The ac line voltage has an rms value of 120 V and a frequency (f) = 60 Hza) Calculate the transformer turns ratio. b) Plot in the same graph signal vS(t) and the output signal vO(t) versus time (t) (show all details including amplitudes, time instances, etc.) c) Calculate the rms value of the output signal vO(t). (hint: sin2(x) = 0.5(1- cos(2x))) d) If a capacitor C=3.58 F is connected across R = 10 k, repeat (b) in a new grapharrow_forwardIn the circuit shown in Figure 2–52 (p. 97), the Zener diode has a reverse breakdown voltage of 12V. RS = 50 Ohms, VS = 20V, and RL can vary from 100 Ohms to 200 Ohms. Assuming that the Zener diode remains in breakdown, find: (a) the minimum and maximum current in the Zener diode; (b) the minimum and maximum power dissipated in the diode; and (c) the minimum rated power dissipation that RS should have.arrow_forwardQ2 (b) Multiple diodes circuit is given in Figure (i) Identify the condition for Si and Ge diodes. (ii) Determine the current flowing into Si and Ge diodes. (iii) Calculate the output voltage, Voarrow_forward
- In the circuit, diode D1 has n = 1.4 and has an operating point I D = 1mA at V D =0.7 V and is at room temperature. Diode D2 has an area that is 20 times larger than D1 but isotherwise the same. a) What is the current through diode D1?b) What is the value of the saturation current, Is for diode D2?c) What is the voltage Vx ? d) Determine the value of R to make Vo = -0.2Varrow_forwarda. Using standard resistor values, what value of R1 is needed to achieve 1.18V ±0.01V at Vout? b. Using the R1 value chosen in (a) part, what happens to the voltage Vout when a load resistance of 10K is added (between Vout and ground). c. What is the minimum value of load resistance required for correct operation Zener diode is used in place of si diode. Or you can assume zener current according to requirement Answer it i will ratearrow_forwardDesign rectifier circuits to provide an output of100 VDC using a.) HWR b.) Center-tappedFWR and c.) Bridge-Type FWR circuits. For each circuit, calculate the transformer peakvoltage rating, the diode PIV ratings, and thetransformer turns ratio, if power is taken fromthe 220V line ac supplyarrow_forward
- DiodesFill in the blanks with the words belowcheck valve, conductance, convert, crystalline, impurities, infinite, galena, p–n junction, rectifying,resistance, selenium, semiconductor, switching circuits, tailored, temperature, threshold, two-terminal,unidirectionalA diode is a 1 ………………… electronic component that conducts current primarily in one direction(asymmetric 2 ………………..); it has low (ideally zero) 3 ……………… in one direction, and high (ideally4 ………………..) resistance in the other. A 5 ………….. diode, the most common type today, is a 6……….. piece of semiconductor material with a 7 ………………. connected to two electrical terminals. Avacuum tube diode has two electrodes, a plate (anode) and a heated cathode. Semiconductor diodes were thefirst semiconductor electronic devices. The discovery of crystals' 8 ……………… abilities was made byGerman physicist Ferdinand Braun in 1874. The first semiconductor diodes, developed around 1906, weremade of mineral crystals such as 9 ……………….. . Today,…arrow_forwardThe half-wave rectifier in Figure 2–19 has a 250-μF filter capacitor and a 1.5-kOhm load. The ac source is 120 V rms with frequency 60 Hz. The voltage drop across the silicon diode is 0.7V. Assuming light loading, find (a) the dc value of the load voltage; (b) the peak-to-peak value of the ripple (c) the %-ripple (d) plot vin(t), vR(t) (output without the filter cap) and vL(t) (output with the filter cap) all on the same grapharrow_forwardA Zener diode is connected in a voltage regulator circuit as shown in figure.2. The Zener voltage at Iz = 0 is 15V and Zener incremental resistance 0.2Ω. (a) Determine the value of Ri such that Zener diode remains in breakdown if the load current IL varies from 50 to 500 mA and if the input voltage VI varies from 20 to 30 V. Assume Izmin =0.2Izmax(b)Determine the power rating of each element in a circuit.arrow_forward
- A Zener diode is connected in a voltage regulator circuit as shown in figure.2. The Zener voltage at Iz = 0 is 15V and Zener incremental resistance 0.2Ω. (a) Determine the value of Ri such that Zener diode remains in breakdown if the load current IL varies from 50 to 500 mA and if the input voltage VI varies from 20 to 30 V. Assume Izmin =0.2Izmaxarrow_forwardQuestion 3 a) The Fermi level of a solid-state body is the thermodynamic work required to add one electron to the body. The Fermi level does not include the work required to remove the electron from wherever it came from. With the aid of diagram discuss the importance of the Fermi Energy level, especially its relevance to electron flow in a pn-junction diode. b) Discuss the I/V characteristics curve of a practical Germanium diode and explain in detail how the forward and reverse are achieved. Support your explanation with a suitable circuit diagram with a voltage source and RC components connected across the p-n junctionarrow_forwardA load is connected in the Full Bridge rectifier circuit (Four Diodes). Usedtransformer primary voltage value is 220 V (rms). The transformer winding ratio is 1:10.Using the 0.7 V model of the diode,Load Rating: 7 K Ohmsa) How many % of conduction does each diode branch stay on?b) Find the average values of the load voltage.c) Find the average values of the load current.d) Find the effective value of the load voltage.e) Find the effective value of the load current.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,