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Which one of the following statements is correct? A tunnel diode is always biased
- a)By a dc source
- b)In the middle of its negative resistance region
- c)In the positive resistance region nearest tozero
- d)In the reverse direction
Correct answer is option 'B'. Can you explain this answer?
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Which one of the following statements is correct? A tunnel diode is al...
Tunnel Diode Biasing
The correct statement is that a tunnel diode is always biased in the middle of its negative resistance region.
Explanation
Tunnel diodes are heavily doped p-n junction diodes. They have a unique feature of negative resistance, which means that the current decreases as the voltage increases in a certain range of biasing. This negative resistance region is the most important feature of tunnel diodes, and it is used in various applications such as oscillators, amplifiers, and switching circuits.
Tunnel diodes are always biased in the negative resistance region to take advantage of this feature. The bias voltage is chosen such that the tunnel diode operates in the middle of its negative resistance region. This is because the negative resistance region is a narrow range of voltage, and any small variation in the bias voltage can cause the tunnel diode to switch from negative resistance to positive resistance.
If the tunnel diode is biased below the negative resistance region, it operates in the positive resistance region, which means that the current increases as the voltage increases. This is not desirable for most applications.
If the tunnel diode is biased above the negative resistance region, it operates in the normal diode region, which means that the current increases exponentially with the voltage. This is also not desirable for most applications.
Therefore, it is important to bias the tunnel diode in the middle of its negative resistance region to take advantage of its unique feature of negative resistance.
Conclusion
In conclusion, a tunnel diode is always biased in the middle of its negative resistance region to take advantage of its unique feature of negative resistance, which is used in various applications such as oscillators, amplifiers, and switching circuits.
The correct statement is that a tunnel diode is always biased in the middle of its negative resistance region.
Explanation
Tunnel diodes are heavily doped p-n junction diodes. They have a unique feature of negative resistance, which means that the current decreases as the voltage increases in a certain range of biasing. This negative resistance region is the most important feature of tunnel diodes, and it is used in various applications such as oscillators, amplifiers, and switching circuits.
Tunnel diodes are always biased in the negative resistance region to take advantage of this feature. The bias voltage is chosen such that the tunnel diode operates in the middle of its negative resistance region. This is because the negative resistance region is a narrow range of voltage, and any small variation in the bias voltage can cause the tunnel diode to switch from negative resistance to positive resistance.
If the tunnel diode is biased below the negative resistance region, it operates in the positive resistance region, which means that the current increases as the voltage increases. This is not desirable for most applications.
If the tunnel diode is biased above the negative resistance region, it operates in the normal diode region, which means that the current increases exponentially with the voltage. This is also not desirable for most applications.
Therefore, it is important to bias the tunnel diode in the middle of its negative resistance region to take advantage of its unique feature of negative resistance.
Conclusion
In conclusion, a tunnel diode is always biased in the middle of its negative resistance region to take advantage of its unique feature of negative resistance, which is used in various applications such as oscillators, amplifiers, and switching circuits.
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Which one of the following statements is correct? A tunnel diode is always biaseda)By a dc sourceb)In the middle of its negative resistance regionc)In the positive resistance region nearest tozerod)In the reverse directionCorrect answer is option 'B'. Can you explain this answer?
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