p-n Junction Diode (Part 2) || Forward Bias | Reverse Bias || Semiconductor - 09 || in HINDI

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One of the best Lecture On Physics , SemiConductors in the view of way of teaching and understanding for a student . Thank you sir for teaching us semi conductors in visualising and interesting way .

[@sripadarajapaga8051]

Hello Sir, a small doubt. 1. Why don't all electrons diffuse with the holes or electrons filling the holes when it is given enough push by the external voltage of the battery? 2. How come electrons are coming from the p-side to the n-side without diffusing? 3. How come p or n-side is neutral as a whole? Thanks for all the videos.

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[@sridharchitta7321]

Barrier potential can never be made zero in an operational diode. What is a pn junction ? A pn junction allows current in one direction only. It blocks current in the reverse direction. When a pn junction is formed, a potential barrier designated Vo comes into existence and is typically around 0.6 to 0.7 volts for silicon junctions. When the barrier whose Vo is 0.7 volts is disturbed by applying a forward bias of say, 0.6 volts, the current increases and the increase becomes steep for small increments of the forward bias value a little greater than 0.68 volts. Large currents are observed when the forward bias is 0.69 volts which is closer to the barrier voltage of 0.7 volts. The forward bias can never exceed the potential barrier voltage nor can it bring the barrier down to zero volts. That is the reason you seldom see current vs volt graphs of pn junction diodes beyond a volt or so. How does the bias remain less than the barrier in an operational diode? The voltage bias applied drops in the bulk neutral regions of the diode. A detailed description of the pn junction with a distinct approach using surface charges, alignment of Fermi levels, creation of the barrier, the distinct processes of diffusion, drift, recombination and the influence of the electric field on the energies of electrons is provided in the following textbooks. Electrostatics and circuits belong to one science and not two, that of electricity and magnetism. To know how they are unified visit this link matterandinteractions.org/articles-talks/ and view the article 'A unified treatment of electrostatics and circuits. B. Sherwood and R. Chabay, unpublished. (1999)' pdf. For a live demonstration of surface charge and its effects in circuits visit kzbin.info/www/bejne/i2i1fZpja55km7M For a detailed discussion of surface charge, coulomb's law, electric fields, fields of dipoles and other charge configurations, parallel plates, capacitance, currents, conservation of charge, conservation of current, superposition of fields, superposition of potential, simple dc circuit, magnetic fields, magnetic fields of a current element, straight wire, current loop, solenoids, biot-savart law, voltage, voltage source, difference between e.m.f. and potential difference, ideal voltage sources, resistors, how current branches in a parallel circuit, capacitors, inductors, faraday's law, inductance, ac circuits, transmission lines, motors, generators, p-n junction diodes, electromagnetic waves, antennas and radiation, new electrodynamic theories on the nature of the electric field, see "Electric and Magnetic Interactions" by Chabay and Sherwood www.matterandinteractions.org or Fundamentals of electric theory and circuits by Sridhar Chitta www.wileyindia.com/fundamentals-of-electric-theory-and-circuits.html There is a "look inside" feature in the amazon.com webpage of the book "Fundamentals of electric theory and circuits" by Sridhar Chitta with a few pages of Chapter 1 which may be viewed and also which you may swipe left or press < icon to view the foreword, preface and Table of Contents. The contents of the above book by Sridhar Chitta, make a distinct unified approach to electrostatics and a few advanced circuits like coupling signals to amplifiers, lending precision and clarity to the topics which is not found in most text books. The book comes alongwith a CD with animated power point presentations for all chapters and voltage regulator, RC phase shift oscillators and differential amplifiers included additionally. For a lecture by Prof Ruth Chabay on surface charge in a simple dc circuit visit kzbin.info/www/bejne/Y2i6Y2xqg8R7oc0

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Kehna kya chahte ho 😂

[@sridharchitta7321]

@@vsbhardwajofficial953 @VS Bhardwaj Official statement after 11.45 minute that barrier potential becomes zero is incorrect. You may refer to standard text by Chabay and Sherwood or Millman and Halkias or also my book.

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Dear sir please please reply, Electric field is inversely proportion to distance hota hai toh Electric field kam hone se depletion layer kam kyu rha hai , badhna chahiye na!!!

[@AtheismLeadsToIrrationality]

Thank you sir aapne adds aise time par dali hain ke jisse padhai zyada disturb na ho , thanks alot

[@soumitramandal7930]

If you apply 5v dc in forward bias through IN4001/IN4007 diode, then you will get 4.3v due to potential barrier i.e.0.7v for silicon diode. Very Nice explanation with animation . ❤❤ But in schottky diode the voltage drop is 0.1v. It is costly. Rs.10/- per pc

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Matchless explanation

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QUESTION QUESTION QUESTION SIR SECOND CONDITION REVERSE ME ELECTRON KE TARAF POSATIVE CHARGE KYU ? ANSWER PLEASE PLEASE PLEASE PLEASE PLEASE

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🤔🤔🤔