(a) The following circuit shows a linear voltage regulator. Assuming the zener diode has specifications (VZ = 2.5 V, IZ = 60 mA), select adequate resistor values to provide a regulated output voltage Vo = 10 V from an unregulated voltage Vi = 15V.
(b) Calculate the power efficiency of the regulator when a load RL = 10Ω is connected to the regulator output.
(c) Briefly explain the terms “dropout”, “line regulation”, and “load regulation”, as they apply to voltage regulators.
(d) List one of the main advantages of switching regulators when compared to linear regulators.
Homework Answers
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(a) The following circuit shows a linear voltage regulator. Assuming the zener diode has specifications (VZ = 2.5 V, IZ...
The circuit above is a Zener voltage regulator using D1N750 zener diode with Vz=4.7V: 1. Calculate...
The circuit above is a Zener voltage regulator
using D1N750 zener diode with Vz=4.7V:
1. Calculate the minimum value of E in order to have the voltage
across RL regulated VL=Vz
2. Using Orcad PSpice schematics, simulate the
circuit using bias point and find Iz, IL, Is and Vz (the circuit
must have all voltages and currents values shown).
3. Using Orcad PSpice schematics, use DC sweep to
vary RL from 200 ohm to 1000 ohm and plot VL (for...
(c) A loaded zener regulator is shown in Figure 3. Given Vz= 5.1 V at, Iz...
(c) A loaded zener regulator is shown in Figure 3. Given Vz= 5.1 V at, Iz = 49 mA, Izk= 1 mA, Zz = 72 and Izm= 70 mA. [Satu pengatur beban zener ditunjukkan di dalam Rajah 3. Diberikan V2 = 5.1 V, Iz = 49mA, Izx = 1mA, 2-7 dan Izm = 70mA.] i) Calculate the minimum and the maximum load currents for which the zener diode will maintain the regulation. [Kirakan nilai minima dan maksima arus beban untuk...
Question 22 The Zener diode 1N4744A, shown in the figure, has Vz=15 V, IZK = 0.25...
Question 22 The Zener diode 1N4744A, shown in the figure, has Vz=15 V, IZK = 0.25 mA and IZM-72 mA. Determine the output voltage at the load RL 15092 SRL 1502 4.0 V 8V 15V
Problem 3: (20 points) A zener-diode voltage regulator circuit is shown belkw zener diode has breakdown voltage Vz 8.0V and the zener resistance is nsumed to be 0 ohms. The power supply voltage V...
Problem 3: (20 points) A zener-diode voltage regulator circuit is shown belkw zener diode has breakdown voltage Vz 8.0V and the zener resistance is nsumed to be 0 ohms. The power supply voltage Vps can vary between 10V and 14V and the lod resistance Ri can vary between 100 ohms and 1 kohm, 圧 1. Find a value of R such that the zener diode remains properly biased over the range of variation of Vps and RI (hint: the minimum...
2.19 Consider the circuit shown in Figure P2.19. The Zener diode voltage is Vz = 3.9...
2.19 Consider the circuit shown in Figure P2.19. The Zener diode voltage is Vz = 3.9 V and the Zener diode incremental resistance is ra = 0. (a) Deter- mine Iz, Il, and the power dissipated in the diode. (b) Repeat part (a) if the 4 k 32 load resistor is increased to 10 KS2. 12 k22 " 1112 vz$ 111 462 20 v= Figure P2.19
that's all information it gives A zener-diode voltage regulator circuit is shown below. The tage V 8.0V and the zener resistance is assumed to Problem 3: (20 points) zener diode has breakdown...
that's all information it gives
A zener-diode voltage regulator circuit is shown below. The tage V 8.0V and the zener resistance is assumed to Problem 3: (20 points) zener diode has breakdown vol be 0 ohms. The power supply voltage Vps can vary between resistance RL can vary between 100 ohms and 1 kohm. 10V and 14V and the load Ri PS 1. Find a value of Ri such that the zener diode remains properly biased over the range of...
Required Vout 10V, Nominal Vin: 15V. Nominal output current: 15mA. Q2 has a high current gain (100) Q1 current gain is 50 Q1 R2 Q2 Vin Vout ZD1 Figure 2: Linear series regulator If ZD1 is a 5.2V Zene...
Required Vout 10V, Nominal Vin: 15V. Nominal output current: 15mA. Q2 has a high current gain (100) Q1 current gain is 50 Q1 R2 Q2 Vin Vout ZD1 Figure 2: Linear series regulator If ZD1 is a 5.2V Zener diode, calculate suitable component values for R1,R2, R3 to meet the required specification a) b) Compare the efficiency of a shunt regulator to a series regulator as shown in Figure 2 at the same load voltage and current.
Required Vout 10V,...
Design a linear series regulator with 2 transistors with the following specifications. Required Vout: 10V, Nominal Vin: 15V. Nominal output current: 15mA. Q2 has a high current gain (>100). Q1 current gain is 50
(a) If ZD1 is a 5.2V Zener diode, calculate suitable component values for R1,R2, R3 to meet the required specification(b) Compare the efficiency of a shunt regulator to a series regulator as shown in Figure 2 at the same load voltage and current.(c) The linear regulator is to be replaced with a switching regulator. Describe and draw the circuit of the most appropriate switching regulator.(d) What are the advantages and disadvantages of replacing the linear regulator with a switching power...
5000 10.2 S pts) The Zener diode in the circuit on the right voltage V 20...
5000 10.2 S pts) The Zener diode in the circuit on the right voltage V 20 = 8.5V., and Zener resistancerz the circuit on the right has a Zener d) Find the Thevenin equivalent circuit as seen by lo b) Find the output voltage if a loa Find the output voltage if a load R, is connected and it draws a 1.5 mA current. Determine the value of RL c) How small can the load R, be, while ensuring that...
Zener Diode as an Voltage Regulatorz A 1N756 (8.2 V at 25 C) is used as...
Zener Diode as an Voltage Regulatorz A 1N756 (8.2 V at 25 C) is used as an 8.2 V regulator in the circuit shown. 1. Measure the total current in the source (without Ru). 2, Measure the total current, lz and IRL for R.-7ΚΩ 3. What is the smallest load resistor that can be used before losing regulation? Then measure Iz and I 10 ko IN756 o V
The circuit above is a Zener voltage regulator
using D1N750 zener diode with Vz=4.7V:
1. Calculate the minimum value of E in order to have the voltage
across RL regulated VL=Vz
2. Using Orcad PSpice schematics, simulate the
circuit using bias point and find Iz, IL, Is and Vz (the circuit
must have all voltages and currents values shown).
3. Using Orcad PSpice schematics, use DC sweep to
vary RL from 200 ohm to 1000 ohm and plot VL (for...
(c) A loaded zener regulator is shown in Figure 3. Given Vz= 5.1 V at, Iz = 49 mA, Izk= 1 mA, Zz = 72 and Izm= 70 mA. [Satu pengatur beban zener ditunjukkan di dalam Rajah 3. Diberikan V2 = 5.1 V, Iz = 49mA, Izx = 1mA, 2-7 dan Izm = 70mA.] i) Calculate the minimum and the maximum load currents for which the zener diode will maintain the regulation. [Kirakan nilai minima dan maksima arus beban untuk...
Question 22 The Zener diode 1N4744A, shown in the figure, has Vz=15 V, IZK = 0.25 mA and IZM-72 mA. Determine the output voltage at the load RL 15092 SRL 1502 4.0 V 8V 15V
Problem 3: (20 points) A zener-diode voltage regulator circuit is shown belkw zener diode has breakdown voltage Vz 8.0V and the zener resistance is nsumed to be 0 ohms. The power supply voltage Vps can vary between 10V and 14V and the lod resistance Ri can vary between 100 ohms and 1 kohm, 圧 1. Find a value of R such that the zener diode remains properly biased over the range of variation of Vps and RI (hint: the minimum...
2.19 Consider the circuit shown in Figure P2.19. The Zener diode voltage is Vz = 3.9 V and the Zener diode incremental resistance is ra = 0. (a) Deter- mine Iz, Il, and the power dissipated in the diode. (b) Repeat part (a) if the 4 k 32 load resistor is increased to 10 KS2. 12 k22 " 1112 vz$ 111 462 20 v= Figure P2.19
that's all information it gives
A zener-diode voltage regulator circuit is shown below. The tage V 8.0V and the zener resistance is assumed to Problem 3: (20 points) zener diode has breakdown vol be 0 ohms. The power supply voltage Vps can vary between resistance RL can vary between 100 ohms and 1 kohm. 10V and 14V and the load Ri PS 1. Find a value of Ri such that the zener diode remains properly biased over the range of...
Required Vout 10V, Nominal Vin: 15V. Nominal output current: 15mA. Q2 has a high current gain (100) Q1 current gain is 50 Q1 R2 Q2 Vin Vout ZD1 Figure 2: Linear series regulator If ZD1 is a 5.2V Zener diode, calculate suitable component values for R1,R2, R3 to meet the required specification a) b) Compare the efficiency of a shunt regulator to a series regulator as shown in Figure 2 at the same load voltage and current.
Required Vout 10V,...
5000 10.2 S pts) The Zener diode in the circuit on the right voltage V 20 = 8.5V., and Zener resistancerz the circuit on the right has a Zener d) Find the Thevenin equivalent circuit as seen by lo b) Find the output voltage if a loa Find the output voltage if a load R, is connected and it draws a 1.5 mA current. Determine the value of RL c) How small can the load R, be, while ensuring that...
Zener Diode as an Voltage Regulatorz A 1N756 (8.2 V at 25 C) is used as an 8.2 V regulator in the circuit shown. 1. Measure the total current in the source (without Ru). 2, Measure the total current, lz and IRL for R.-7ΚΩ 3. What is the smallest load resistor that can be used before losing regulation? Then measure Iz and I 10 ko IN756 o V
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