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Which of the following is true about the temperature coefficient or TC of the Zener diode?
- a)For Zener voltage less than 5V, TC is negative
- b)For Zener voltage around 5V, TC can be made zero
- c)For higher values of Zener voltage, TC is positive
- d)All of the mentioned
Correct answer is option 'D'. Can you explain this answer?
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Which of the following is true about the temperature coefficient or TC...
All of the mentioned are true for the TC of a zener diode.
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Which of the following is true about the temperature coefficient or TC...
Temperature Coefficient (TC) of Zener Diode
The temperature coefficient (TC) of a Zener diode refers to the change in the Zener voltage with temperature variation. It is an important parameter that affects the stability of the Zener voltage.
Negative TC for Zener voltage less than 5V
For Zener voltages less than 5V, the TC of the Zener diode is negative. This means that as the temperature increases, the Zener voltage decreases. This is because the Zener breakdown mechanism in these diodes is dominated by the avalanche breakdown, which is highly temperature-dependent.
TC can be made zero for Zener voltage around 5V
For Zener voltages around 5V, the TC of the Zener diode can be made zero by carefully choosing the doping concentration and profile of the diode. This is achieved by balancing the avalanche and Zener breakdown mechanisms, which have opposite temperature coefficients. This makes Zener diodes with voltage ratings around 5V highly stable over a wide temperature range.
Positive TC for higher values of Zener voltage
For higher values of Zener voltage, the TC of the Zener diode is positive. This means that as the temperature increases, the Zener voltage also increases. This is because the Zener breakdown mechanism in these diodes is dominated by the Zener effect, which has a positive temperature coefficient.
Conclusion
In summary, the TC of a Zener diode depends on its Zener voltage. For voltages less than 5V, the TC is negative, for voltages around 5V, TC can be made zero, and for higher voltages, the TC is positive. This parameter is crucial in designing Zener diode voltage regulators and other applications that require stable voltage references over a wide temperature range.
The temperature coefficient (TC) of a Zener diode refers to the change in the Zener voltage with temperature variation. It is an important parameter that affects the stability of the Zener voltage.
Negative TC for Zener voltage less than 5V
For Zener voltages less than 5V, the TC of the Zener diode is negative. This means that as the temperature increases, the Zener voltage decreases. This is because the Zener breakdown mechanism in these diodes is dominated by the avalanche breakdown, which is highly temperature-dependent.
TC can be made zero for Zener voltage around 5V
For Zener voltages around 5V, the TC of the Zener diode can be made zero by carefully choosing the doping concentration and profile of the diode. This is achieved by balancing the avalanche and Zener breakdown mechanisms, which have opposite temperature coefficients. This makes Zener diodes with voltage ratings around 5V highly stable over a wide temperature range.
Positive TC for higher values of Zener voltage
For higher values of Zener voltage, the TC of the Zener diode is positive. This means that as the temperature increases, the Zener voltage also increases. This is because the Zener breakdown mechanism in these diodes is dominated by the Zener effect, which has a positive temperature coefficient.
Conclusion
In summary, the TC of a Zener diode depends on its Zener voltage. For voltages less than 5V, the TC is negative, for voltages around 5V, TC can be made zero, and for higher voltages, the TC is positive. This parameter is crucial in designing Zener diode voltage regulators and other applications that require stable voltage references over a wide temperature range.
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Which of the following is true about the temperature coefficient or TC...
For zener voltage less than 5v-> will have zener breakdown i.e. negative temperature coefficient(breakdown voltage decrease as temperature increase). zener voltage equal to 5v->will have zener or avalanche breakdown i.e. independent of temperature(breakdown voltage is independent of temperature). zener voltage more than 5v-> will have avalanche breakdown i.e. positive temperature coefficient.(breakdown voltage increase as temperature increase)
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Which of the following is true about the temperature coefficient or TC of the Zener diode?a)For Zener voltage less than 5V, TC is negativeb)For Zener voltage around 5V, TC can be made zeroc)For higher values of Zener voltage, TC is positived)All of the mentionedCorrect answer is option 'D'. Can you explain this answer?
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Which of the following is true about the temperature coefficient or TC of the Zener diode?a)For Zener voltage less than 5V, TC is negativeb)For Zener voltage around 5V, TC can be made zeroc)For higher values of Zener voltage, TC is positived)All of the mentionedCorrect answer is option 'D'. Can you explain this answer? for Electrical Engineering (EE) 2024 is part of Electrical Engineering (EE) preparation. The Question and answers have been prepared according to the Electrical Engineering (EE) exam syllabus. Information about Which of the following is true about the temperature coefficient or TC of the Zener diode?a)For Zener voltage less than 5V, TC is negativeb)For Zener voltage around 5V, TC can be made zeroc)For higher values of Zener voltage, TC is positived)All of the mentionedCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for Electrical Engineering (EE) 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which of the following is true about the temperature coefficient or TC of the Zener diode?a)For Zener voltage less than 5V, TC is negativeb)For Zener voltage around 5V, TC can be made zeroc)For higher values of Zener voltage, TC is positived)All of the mentionedCorrect answer is option 'D'. Can you explain this answer?.
Which of the following is true about the temperature coefficient or TC of the Zener diode?a)For Zener voltage less than 5V, TC is negativeb)For Zener voltage around 5V, TC can be made zeroc)For higher values of Zener voltage, TC is positived)All of the mentionedCorrect answer is option 'D'. Can you explain this answer? for Electrical Engineering (EE) 2024 is part of Electrical Engineering (EE) preparation. The Question and answers have been prepared according to the Electrical Engineering (EE) exam syllabus. Information about Which of the following is true about the temperature coefficient or TC of the Zener diode?a)For Zener voltage less than 5V, TC is negativeb)For Zener voltage around 5V, TC can be made zeroc)For higher values of Zener voltage, TC is positived)All of the mentionedCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for Electrical Engineering (EE) 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which of the following is true about the temperature coefficient or TC of the Zener diode?a)For Zener voltage less than 5V, TC is negativeb)For Zener voltage around 5V, TC can be made zeroc)For higher values of Zener voltage, TC is positived)All of the mentionedCorrect answer is option 'D'. Can you explain this answer?.
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