Lect.13| Transistor| Types| Bipolar Junction Transistor| BJT| NPN | PNP| BJT Structure| Symbols
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Dear all, in this video lecture (Lecture-13) we have to learn several topics from the course of Electronics-1. Major topics of this lecture include:
Transistor: Types of Transistors, BJT and FET
Bipolar Junction Transistor: NPN and PNP, BJT Structure, Schematic Symbols, Basic operation, BE-junction (Forward Bias), BC-junction (Reverse Bias), Transistor currents
{Lect. 13| Transistor| Types| Bipolar Junction Transistor| BJT| NPN | PNP| BJT Structure| Symbols}
Previously, in Lecture: 01 - 12, the major topics discussed were:
Lecture-01: Introduction to The Course: Course Description, Course Outlines, Recommended Books for the course, Prerequisite Details (AC and DC circuit Analysis) for Electronics-1, Differences Between the Fields of "Electrical and Electronics"
Lecture-02: The Atom and Atomic Structure, The Bohr Model: Electron, Proton, Neutron & Nucleus, Orbit, Shell, Core etc., Atomic Number, Electrons and Shells, Valence Electrons, Ionization Process etc.
Lecture-03: Classification of Matter: Insulators, Conductors and Semiconductors, The Carbon Atom (covering Core of an Atom), The Energy Bands: Valence Band & Conduction Band, Energy Gap or Band Gap, Energy level diagram, Semiconductor vs. Conductor Atom, Silicon vs. Germanium Atom, Covalent Bond and Silicon crystal
Lecture-04: Conduction in Semiconductors, Electron-Hole Pair, Electron Current, Hole Current, Doping (Process), Formation of N-type Semiconductors: Majority Charge Carriers (Electrons), Minority Charge Carriers (Holes), Formation of P-type Semiconductors: Majority Charge Carriers (Holes), Minority Charge Carriers (Electrons)
Lecture-05: The PN-Junction Formation, Diffusion Across a PN-Junction
The Formation of the Depletion region, Barrier Potential and its Significance, Values of Barrier potential in Silicon and Germanium, Energy diagrams (PN Junction & Depletion Region), Energy Hill
Lecture-06: The Diode and its Operation, The electrical symbol for a diode, Several diode package configurations, Forward Bias a Diode, Forward-bias and required conditions, Effect of forward bias on the depletion region, Barrier potential and its effects during forward-bias, Reverse Bias a Diode, Reverse-bias and required conditions, Reverse current, Reverse breakdown
Lecture-07: Voltage–Current Characteristic of a Diode, VI-characteristic for Forward Bias, Graph the V-I curve for Forward Bias, Barrier Potential affects the V-I curve, Dynamic Resistance, VI-characteristic for Reverse Bias, Graph the V-I curve for Reverse Bias, Complete VI-characteristic curve, Effects of Temperature on the Diode Characteristic, Diode approximations (Three Diode Models), Ideal, Practical, Complete Diode Model
Lecture-08: Basic Dc Power Supply, Rectifiers (HWR, FWR), Half Wave Rectifier, Block Diagram and Operation, Average value of a HWR output voltage, Effect of barrier potential on a HWR output, Peak Inverse Voltage (PIV), Full Wave Rectifier (FWR), Center-tapper FWR, Bridge FWR
Lecture-09: Limiter/Clipper/Slicer, Simple Diode Limiter Circuit, Positive Limiter, Negative Limiter, Dual Limiter, Biased Limiter Circuit (Positive/Negative/Dual), Diode Clamper or DC-restorer, Operation of Diode Clamper Circuit, Positive Clamper, Negative Clamper
Lecture-10: Special Purpose Diodes, Zener Diode, Schematic symbol, Zener Operation, Zener breakdown, Avalanche breakdown, Breakdown characteristics, Zener Regulation, Zener Equivalent Circuit, Temperature Co-efficient, Zener Power Dissipation and Zener Derating
Lecture-11: Zener Regulation, Zener Voltage Regulation, Zener Regulation with a Variable Input Voltage, How Zener diode can regulate a DC voltage, Zener regulation example,
Zener limiting: Three basic ways of Zener Diode limiting action (Positive, Negative and Dual)
Lecture-12: Varactor Diode, Optical diodes: LED, Quantum Dots, Photo Diode
Other types of Diodes: Laser diode, Schottky diode, PIN diode, Step-recovery diode, Tunnel diode, Current regulator diode
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