Semiconductors L13: Zener Diode | Zener breakdown vs Avalanche Breakdown | Physics Endgame

Diodes are widely used semiconductor devices. A rectifier diode is a two-lead semiconductor that allows current to pass in only one direction.

Vikrant Kirar and other top educators are teaching live on Unacademy. Use code "VIKRANT” to get 10% off on your Unacademy Subscription.

Download the Unacademy Learning App here:

Unacademy Subscription Benefits:

1. Learn from your favorite teacher
2. Dedicated DOUBT sessions
3. One Subscription, Unlimited Access
4. Real-time interaction with Teachers
5. You can ask doubts in a live class
6. Limited students
7. Download the videos & watch them offline
#neet​ #neet2021​ #neet2022

[raghwanacharya]

first time ever i have liked any video of UNACADEMY the explanation is very simple and very clear.

[VishnuPrasad-lpdy]

This was just the best i have ever seen lecture of zenar Or avalanche breakdowns 💛💛💛💛

[nishanthkumar]

Sir please it's a humble request to you, . Please complete the the chapters as soon as possible . Atleast upload the videos regularly and complete it soon

[sathvik]

Key moments:
00:05 The video discusses the behavior of a semiconductor diode in reverse bias, highlighting how current flow is limited by minority charge carriers. Despite increasing voltage, the current remains regulated until breakdown occurs, resulting in rapid changes in current.
-The concept of minority charge carriers is crucial as they determine the limitations of current in a reverse-biased diode. This phenomenon explains why maximum current levels stabilize.
-When voltage is increased significantly, a breakdown effect occurs, leading to a sudden surge in current. This breakdown is a key feature of diode behavior under specific conditions.
-The relationship between voltage and current in this scenario illustrates the importance of understanding circuit dynamics. It showcases how real-world applications can be impacted by these electrical principles.
02:21 Voltage regulation is crucial to prevent damage to devices like mobile phones during charging. Maintaining appropriate voltage levels ensures safety and functionality in electronic circuits.
-The behavior of current flow in resistive circuits illustrates the necessity of voltage regulation. By controlling voltage, we can avoid potential circuit damage.
-The importance of limiting voltage across charging pins is emphasized to prevent overheating. Proper voltage management is crucial for prolonging the lifespan of electronic devices.
-Understanding how a zener diode operates in reverse can help regulate voltage effectively. This component is essential for maintaining consistent voltage across devices.
04:41 Diodes function as voltage regulators, maintaining voltage across them despite varying current levels. This ensures that the voltage drop across the diode remains constant under specific conditions.
-The voltage drop across the diode is directly proportional to the current flowing through it, illustrating Ohm's law in action. This relationship is crucial for circuit design.
-Understanding the reverse bias behavior of diodes is essential. It prevents excessive voltage from causing damage, maintaining circuit integrity and functionality.
-Calculating resistance and current values in circuits with diodes helps ensure proper operation. Proper calculations prevent failures and optimize performance in electronic applications.
07:00 The video explains the calculations for current and voltage in a resistive circuit. It emphasizes the importance of understanding potential differences and their effects on current flow.
-The significance of resistance values in determining the current and voltage relationship is discussed. Accurate measurements are crucial for circuit analysis and troubleshooting.
-The process of applying filters to limit potential and the impact it has on current calculations is highlighted. This helps in understanding circuit behavior under different conditions.
-The formula for calculating current using potential difference and resistance is introduced. This mathematical approach is essential for electrical engineering applications.
09:23 High electric fields in semiconductors can lead to issues such as breakdown and increased electronic generation. Managing voltage levels is crucial to prevent damage and ensure stability.
-The role of hydration in semiconductors can further complicate electric field interactions. Understanding these interactions is vital for advancing semiconductor technology.
-Excessive voltage can cause depletion layers to widen, affecting the semiconductor's performance. This can result in unstable electronic behavior and potential breakdown.
-Increasing electric fields can generate more electrons, which may disrupt the overall functionality of electronics. Proper control of electric fields is essential for device reliability.
11:41 The video emphasizes the importance of utilizing platforms for competitive exam preparation. It highlights the benefits of accessing various resources and asking questions during classes.
-The advantages of using the Redmi platform for exam preparation are discussed, including access to free life classes and comprehensive study materials.
-Viewers are encouraged to submit their doubts during morning sessions, which enhances their understanding and engagement in the learning process.
-Using discount codes is promoted as a way to save on subscriptions, making resources more accessible for students preparing for competitive exams.

[study_for_no_reason]

sir, i am sorry but you are distraction. i wish i could study from you in real life 😩❤

[akanksha]

Education and distraction at same time

[ArhamKhan]

Very Beautifully and Greatly Explained Sir. Thank You So Much Sir. Love from Pakistan 🇵🇰 ❤.

[aradhyasingh]

Very good teaching skills sir. Thank you for explaining in just 15 mins.

[yashmodi]

thankuuu soooo much bhaiyyaaaa....2 saal bhot ache se padha hu unac pr bs zener diode thoda weak tha....ab poora clear hogya :)

[zainawan]

How voltage remain constant across zener diode

[rainbowgirl]

Thank you somuchh sir ❤️... It's very helpfull

[divyamkothari]

Sir why did u took 15 v above 8:30
It should be zero there and 15 should be below

[cadetmanikant]

I had never expected that teachers of unacademy are so good❤.

[sonukumar]

Sir aapko is lecture ke liye sat sat naman

[azeebaa]

Sir please add caption we don't know hindi

[nerdyboy]

Bhai tum mujhe pahle kyu nahi Mille...😂
Agr pahle mile hote toh shyd mere marks kaam nahi atte...🥲

[bratatimaulik]

Lots of respect sir🙂...and thanks a lot

[fascination]

Ky sirf ek hi type ka question aata h isse ??

[nishanthkumar]

Sir please it's a humble request to you, . Please complete the the chapters as soon as possible . Atleast upload the videos regularly and complete it soon