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प्रश्न
Answer the following giving reasons:
A p-n junction diode is damaged by a strong current.
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उत्तर
A strong current damages a p-n junction diode because it increases the semiconductor's temperature as more power passes through it and some of that energy is converted to heat. The semiconductor then conducts more current as the temperature rises a little further, which raises the temperature even further. Higher temperature results in more current, which increases the temperature. In what is referred to as a thermal runaway, this cycle keeps repeating. The semiconductor (p-n junction) is ultimately destroyed.
संबंधित प्रश्न
Explain the working of P-N junction diode in forward and reverse biased mode.
In the following diagram, is the junction diode forward biased or reverse biased ?
With reference to semiconductor devices, define a p-type semiconductor and a Zener diode.
With reference to Semiconductor Physics,
Name the diode that emits spontaneous radiation when forward biased.
In the circuit shown in figure, if the diode forward voltage drop is 0.3 V, the voltage difference between A and B is ______.
Figure shows the transfer characteristics of a base biased CE transistor. Which of the following statements are true?
At Vi = 0.4 V, transistor is in active state.
At Vi = 1 V, it can be used as an amplifier.
At Vi = 0.5 V, it can be used as a switch turned off.
At Vi = 2.5 V, it can be used as a switch turned on.
Write the property of a junction diode which makes it suitable for rectification of ac voltages.
Describe the following term briefly:
Breakdown voltage in reverse biasing
What occurs near the junction when the p-side and n-side are joined?
Which expression applies Ohm's law to reverse-biased resistance?
