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The delay in switching between the ON and OFF states is due to _________
- a)The time required to change amount of excess minority carriers stored in quasi-neutral regions
- b)The time required to change amount of excess majority carriers stored in quasi-neutral regions
- c)The conduction between storage time and recovery time
- d)The exponential increase in carriers in N region
Correct answer is option 'A'. Can you explain this answer?
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Verified Answer
The delay in switching between the ON and OFF states is due to _______...
When switched instantaneously it stays in a quasi state i.e.., temporary state which stores charges. The delay is produced due to this charge settlement. The diode needs to discharge these excess carriers in order to return the non conduction stage.
Most Upvoted Answer
The delay in switching between the ON and OFF states is due to _______...
The delay in switching between the ON and OFF states is due to the time required to change the amount of excess minority carriers stored in quasi-neutral regions.
When a semiconductor device, such as a diode or transistor, switches from the ON state to the OFF state or vice versa, it involves the movement of excess minority carriers in the device. Excess minority carriers are the minority carriers (electrons in a p-type region or holes in an n-type region) that are injected or generated in the device during operation.
Explanation:
1. Quasi-Neutral Regions:
In a semiconductor device, there are regions called quasi-neutral regions where the concentration of electrons and holes are approximately equal. These regions play a crucial role in the operation of the device.
2. Excess Minority Carriers:
During operation, excess minority carriers are injected or generated in the quasi-neutral regions. For example, in an npn transistor, when the base-emitter junction is forward biased, excess minority carriers (electrons) are injected into the base region.
3. Switching between ON and OFF States:
When a semiconductor device switches from the ON state to the OFF state (or vice versa), the excess minority carriers stored in the quasi-neutral regions need to be removed or replenished.
4. Time Required for Changing Excess Minority Carriers:
The delay in switching between the ON and OFF states is primarily due to the time required to change the amount of excess minority carriers stored in the quasi-neutral regions. This time delay is commonly referred to as the storage time or the minority carrier storage time.
5. Effect on Switching Speed:
The longer the storage time, the slower the switching speed of the device. This is because the excess minority carriers need to be removed or replenished before the device can fully transition between the ON and OFF states.
Conclusion:
In summary, the delay in switching between the ON and OFF states of a semiconductor device is primarily due to the time required to change the amount of excess minority carriers stored in the quasi-neutral regions. This delay affects the switching speed of the device.
When a semiconductor device, such as a diode or transistor, switches from the ON state to the OFF state or vice versa, it involves the movement of excess minority carriers in the device. Excess minority carriers are the minority carriers (electrons in a p-type region or holes in an n-type region) that are injected or generated in the device during operation.
Explanation:
1. Quasi-Neutral Regions:
In a semiconductor device, there are regions called quasi-neutral regions where the concentration of electrons and holes are approximately equal. These regions play a crucial role in the operation of the device.
2. Excess Minority Carriers:
During operation, excess minority carriers are injected or generated in the quasi-neutral regions. For example, in an npn transistor, when the base-emitter junction is forward biased, excess minority carriers (electrons) are injected into the base region.
3. Switching between ON and OFF States:
When a semiconductor device switches from the ON state to the OFF state (or vice versa), the excess minority carriers stored in the quasi-neutral regions need to be removed or replenished.
4. Time Required for Changing Excess Minority Carriers:
The delay in switching between the ON and OFF states is primarily due to the time required to change the amount of excess minority carriers stored in the quasi-neutral regions. This time delay is commonly referred to as the storage time or the minority carrier storage time.
5. Effect on Switching Speed:
The longer the storage time, the slower the switching speed of the device. This is because the excess minority carriers need to be removed or replenished before the device can fully transition between the ON and OFF states.
Conclusion:
In summary, the delay in switching between the ON and OFF states of a semiconductor device is primarily due to the time required to change the amount of excess minority carriers stored in the quasi-neutral regions. This delay affects the switching speed of the device.
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The delay in switching between the ON and OFF states is due to _________a)The time required to change amount of excess minority carriers stored in quasi-neutral regionsb)The time required to change amount of excess majority carriers stored in quasi-neutral regionsc)The conduction between storage time and recovery timed)The exponential increase in carriers in N regionCorrect answer is option 'A'. Can you explain this answer?
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