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Semiconductor Junction Diode Analog Electronics Video Lecture | Crash Course for IIT JAM Physics
FAQs on Semiconductor Junction Diode Analog Electronics Video Lecture - Crash Course for IIT JAM Physics
| 1. What is a semiconductor junction diode? |  |
Ans. A semiconductor junction diode is a two-terminal electronic component that allows current to flow in only one direction. It is made by joining a p-type semiconductor with an n-type semiconductor, creating a junction between the two. This junction forms a depletion region, which acts as a barrier to the flow of current in the reverse direction.
| 2. How does a semiconductor junction diode work? | |
Ans. A semiconductor junction diode works based on the principle of the formation of a depletion region at the junction of p-type and n-type semiconductors. When a forward bias voltage is applied across the diode, the depletion region narrows, allowing current to flow. In the reverse bias condition, the depletion region widens and restricts the flow of current.
| 3. What are the applications of semiconductor junction diodes? | |
Ans. Semiconductor junction diodes have various applications in electronic circuits. Some common applications include rectification, voltage regulation, signal detection, signal modulation, and switching operations. They are widely used in power supplies, radio-frequency circuits, and communication systems.
| 4. What is the current-voltage characteristic of a semiconductor junction diode? | |
Ans. The current-voltage characteristic of a semiconductor junction diode follows a specific pattern. In the forward bias condition, the current increases exponentially with the increase in voltage. However, in the reverse bias condition, only a small reverse saturation current flows until the breakdown voltage is reached, beyond which the current increases rapidly.
| 5. How does temperature affect the behavior of a semiconductor junction diode? | |
Ans. Temperature affects the behavior of a semiconductor junction diode in several ways. The forward voltage drop across the diode decreases with an increase in temperature, leading to an increase in forward current. The reverse current also increases with temperature due to the generation of additional electron-hole pairs. Additionally, high temperatures can cause thermal runaway and damage the diode.
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Oct 23, 2024 Last updated |
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