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Determine the maximum and minimum values of load current for which the Zener diode shunt regulator will maintain regulation when VIN=24V and R=500Ω. The Zener diode has a VZ=12V and (IZ)MAX=90mA.
- a)40mA, 0mA respectively
- b)36mA, 5mA respectively
- c)10mA, 6mA respectively
- d)21mA, 0mA respectively
Correct answer is option 'D'. Can you explain this answer?
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Determine the maximum and minimum values of load current for which the...
The current through the resistance R is given by, I=(VIN-VZ)/R= (24-12)/500=24mA. (IL)MAX=I-(IZ)MIN=24-3=21mA .This current is less than (IZ)MAX. So, we assume that all the input current flows through the Zener diode. Under this condition, (IL)MINis 0mA.
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Determine the maximum and minimum values of load current for which the...
Maximum and Minimum Values of Load Current for Zener Diode Shunt Regulator
Given:
- Input voltage (VIN) = 24V
- Resistance (R) = 500Ω
- Zener diode voltage (VZ) = 12V
- Maximum Zener current (IZ)MAX = 90mA
To maintain regulation, the Zener diode shunt regulator must ensure that the voltage across the load remains constant at the Zener voltage (VZ) regardless of changes in the input voltage (VIN) and load current.
Regulation condition:
The minimum load current occurs when the entire Zener current flows through the resistor (R). In this case, the voltage across the load (VL) is given by Ohm's Law:
VL = IZ * R
The maximum load current occurs when the entire current flows through the Zener diode. In this case, the voltage across the load (VL) is equal to the Zener voltage (VZ).
Maximum Load Current:
VL = VZ = 12V
IZ = (VIN - VZ) / R
12V = (24V - 12V) / 500Ω * IZ
12V * 500Ω = 12V * IZ
6000Ω = 12V * IZ
IZ = 6000Ω / 12V
IZ = 500mA
Since the maximum Zener current (IZ)MAX is given as 90mA, the maximum load current that can be maintained for regulation is limited to the maximum Zener current:
Maximum Load Current = Maximum Zener Current = 90mA
Minimum Load Current:
VL = IZ * R
12V = IZ * 500Ω
IZ = 12V / 500Ω
IZ = 24mA
Since the minimum load current occurs when the entire Zener current flows through the resistor, the minimum load current that can be maintained for regulation is equal to the Zener current:
Minimum Load Current = Zener Current = 24mA
Therefore, the maximum and minimum values of load current for which the Zener diode shunt regulator will maintain regulation when VIN = 24V and R = 500Ω are:
Maximum Load Current = 90mA
Minimum Load Current = 24mA
Hence, option 'D' (21mA, 0mA) is incorrect and the correct answer is option 'a' (40mA, 0mA).
Given:
- Input voltage (VIN) = 24V
- Resistance (R) = 500Ω
- Zener diode voltage (VZ) = 12V
- Maximum Zener current (IZ)MAX = 90mA
To maintain regulation, the Zener diode shunt regulator must ensure that the voltage across the load remains constant at the Zener voltage (VZ) regardless of changes in the input voltage (VIN) and load current.
Regulation condition:
The minimum load current occurs when the entire Zener current flows through the resistor (R). In this case, the voltage across the load (VL) is given by Ohm's Law:
VL = IZ * R
The maximum load current occurs when the entire current flows through the Zener diode. In this case, the voltage across the load (VL) is equal to the Zener voltage (VZ).
Maximum Load Current:
VL = VZ = 12V
IZ = (VIN - VZ) / R
12V = (24V - 12V) / 500Ω * IZ
12V * 500Ω = 12V * IZ
6000Ω = 12V * IZ
IZ = 6000Ω / 12V
IZ = 500mA
Since the maximum Zener current (IZ)MAX is given as 90mA, the maximum load current that can be maintained for regulation is limited to the maximum Zener current:
Maximum Load Current = Maximum Zener Current = 90mA
Minimum Load Current:
VL = IZ * R
12V = IZ * 500Ω
IZ = 12V / 500Ω
IZ = 24mA
Since the minimum load current occurs when the entire Zener current flows through the resistor, the minimum load current that can be maintained for regulation is equal to the Zener current:
Minimum Load Current = Zener Current = 24mA
Therefore, the maximum and minimum values of load current for which the Zener diode shunt regulator will maintain regulation when VIN = 24V and R = 500Ω are:
Maximum Load Current = 90mA
Minimum Load Current = 24mA
Hence, option 'D' (21mA, 0mA) is incorrect and the correct answer is option 'a' (40mA, 0mA).
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Determine the maximum and minimum values of load current for which the Zener diode shunt regulator will maintain regulation when VIN=24V and R=500Ω. The Zener diode has a VZ=12V and (IZ)MAX=90mA.a)40mA, 0mA respectivelyb)36mA, 5mA respectivelyc)10mA, 6mA respectivelyd)21mA, 0mA respectivelyCorrect answer is option 'D'. Can you explain this answer? for Electrical Engineering (EE) 2026 is part of Electrical Engineering (EE) preparation. The Question and answers have been prepared according to the Electrical Engineering (EE) exam syllabus. Information about Determine the maximum and minimum values of load current for which the Zener diode shunt regulator will maintain regulation when VIN=24V and R=500Ω. The Zener diode has a VZ=12V and (IZ)MAX=90mA.a)40mA, 0mA respectivelyb)36mA, 5mA respectivelyc)10mA, 6mA respectivelyd)21mA, 0mA respectivelyCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for Electrical Engineering (EE) 2026 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Determine the maximum and minimum values of load current for which the Zener diode shunt regulator will maintain regulation when VIN=24V and R=500Ω. The Zener diode has a VZ=12V and (IZ)MAX=90mA.a)40mA, 0mA respectivelyb)36mA, 5mA respectivelyc)10mA, 6mA respectivelyd)21mA, 0mA respectivelyCorrect answer is option 'D'. Can you explain this answer?.
Determine the maximum and minimum values of load current for which the Zener diode shunt regulator will maintain regulation when VIN=24V and R=500Ω. The Zener diode has a VZ=12V and (IZ)MAX=90mA.a)40mA, 0mA respectivelyb)36mA, 5mA respectivelyc)10mA, 6mA respectivelyd)21mA, 0mA respectivelyCorrect answer is option 'D'. Can you explain this answer? for Electrical Engineering (EE) 2026 is part of Electrical Engineering (EE) preparation. The Question and answers have been prepared according to the Electrical Engineering (EE) exam syllabus. Information about Determine the maximum and minimum values of load current for which the Zener diode shunt regulator will maintain regulation when VIN=24V and R=500Ω. The Zener diode has a VZ=12V and (IZ)MAX=90mA.a)40mA, 0mA respectivelyb)36mA, 5mA respectivelyc)10mA, 6mA respectivelyd)21mA, 0mA respectivelyCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for Electrical Engineering (EE) 2026 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Determine the maximum and minimum values of load current for which the Zener diode shunt regulator will maintain regulation when VIN=24V and R=500Ω. The Zener diode has a VZ=12V and (IZ)MAX=90mA.a)40mA, 0mA respectivelyb)36mA, 5mA respectivelyc)10mA, 6mA respectivelyd)21mA, 0mA respectivelyCorrect answer is option 'D'. Can you explain this answer?.
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