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Found 2 results

  1. Modern Physics : Semiconductor - Electronics Devices MP4 | Video: h264, 1280x720 | Audio: AAC, 44.1 KHz, 2 Ch Genre: eLearning | Language: English + srt | Duration: 42 lectures (4h 28m) | Size: 5.27 GB IIT JEE Main | Advanced | BITSAT | SAT | NEET | AP Physics | MSAT | MCAT | Course for high school, college What you'll learn Introduction Classification of Metals, Conductors & Semiconductors Intrinsic semiconductor Extrinsic semiconductor p-n juction Semiconductor diode Application of junction diode as a rectifier Special purpose p-n junction diode Junction transistor Digital Electronics & Logic gates Integrated circuits Requirements Should know calculus, trigonometry Description Semiconductor Electronics: Materials, Devices and Simple Circuits Energy bands in conductors, semiconductors and insulators (qualitative ideas only) Semiconductor diode - I-V characteristics in forward and reverse bias, diode as a rectifier Special purpose p-n junction diodes: LED, photodiode, solar cell and Zener diode and their characteristics, zener diode as a voltage regulator Junction transistor, transistor action, characteristics of a transistor and transistor as an amplifier (common emitter configuration), basic idea of analog and digital signals, Logic gates (OR, AND, NOT, NAND and NOR). SUMMARY 1. Semiconductors are the basic materials used in the present solid state electronic devices like diode, transistor, ICs, etc. 2. Lattice structure and the atomic structure of constituent elements decide whether a particular material will be insulator, metal or semiconductor. 3. Semiconductors are elemental (Si, Ge) as well as compound (GaAs, CdS, etc.). 4. Pure semiconductors are called 'intrinsic semiconductors'. The presence of charge carriers (electrons and holes) is an 'intrinsic' property of the material and these are obtained as a result of thermal excitation. The number of electrons (ne ) is equal to the number of holes (nh ) in intrinsic conductors. Holes are essentially electron vacancies with an effective positive charge. 5. The number of charge carriers can be changed by 'doping' of a suitable impurity in pure semiconductors. Such semiconductors are known as extrinsic semiconductors. These are of two types (n-type and p-type). 6. In n-type semiconductors, ne >> nh while in p-type semiconductors nh >> ne . 8. n-type semiconducting Si or Ge is obtained by doping with pentavalent atoms (donors) like As, Sb, P, etc., while p-type Si or Ge can be obtained by doping with trivalent atom (acceptors) like B, Al, In etc. 7. There are two distinct band of energies (called valence band and conduction band) in which the electrons in a material lie. Valence band energies are low as compared to conduction band energies. All energy levels in the valence band are filled while energy levels in the conduction band may be fully empty or partially filled. The electrons in the conduction band are free to move in a solid and are responsible for the conductivity. The extent of conductivity depends upon the energy gap (Eg ) between the top of valence band (EV ) and the bottom of the conduction band EC . The electrons from valence band can be excited by heat, light or electrical energy to the conduction band and thus, produce a change in the current flowing in a semiconductor. 8. For insulators Eg > 3 eV, for semiconductors Eg is 0.2 eV to 3 eV, while for metals Eg ≈ 0. 9. p-n junction is the 'key' to all semiconductor devices. When such a junction is made, a 'depletion layer' is formed consisting of immobile ion-cores devoid of their electrons or holes. This is responsible for a junction potential barrier. 10. By changing the external applied voltage, junction barriers can be changed. In forward bias (n-side is connected to negative terminal of the battery and p-side is connected to the positive), the barrier is decreased while the barrier increases in reverse bias. Hence, forward bias current is more (mA) while it is very small (µA) in a p-n junction diode. 11. Diodes can be used for rectifying an ac voltage (restricting the ac voltage to one direction). With the help of a capacitor or a suitable filter, a dc voltage can be obtained. 15. There are some special purpose diodes. 12. Zener diode is one such special purpose diode. In reverse bias, after a certain voltage, the current suddenly increases (breakdown voltage) in a Zener diode. This property has been used to obtain voltage regulation. 13. p-n junctions have also been used to obtain many photonic or optoelectronic devices where one of the participating entity is 'photon': (a) Photodiodes in which photon excitation results in a change of reverse saturation current which helps us to measure light intensity; (b) Solar cells which convert photon energy into electricity; (c) Light Emitting Diode and Diode Laser in which electron excitation by a bias voltage results in the generation of light. 14. Transistor is an n-p-n or p-n-p junction device. The central block (thin and lightly doped) is called 'Base' while the other electrodes are 'Emitter' and 'Collectors'. The emitter-base junction is forward biased while collector-base junction is reverse biased. 15. Transistor can be used as an amplifier and oscillator. In fact, an oscillator can also be considered as a self-sustained amplifier in which a part of output is fed-back to the input in the same phase (positive feed back). 16. When the transistor is used in the cutoff or saturation state, it acts as a switch. 17. There are some special circuits which handle the digital data consisting of 0 and 1 levels. This forms the subject of Digital Electronics. 18. The important digital circuits performing special logic operations are called logic gates. These are: OR, AND, NOT, NAND, and NOR gates. 19. In modern day circuit, many logical gates or circuits are integrated in one single 'Chip'. These are known as Intgrated circuits (IC). Who this course is for Complete Physics for Engineering and Medical Entrance Exam Preparation. ( IIT JEE Main | Advanced | BITSAT | SAT | NEET etc.) Courses are suitable for students from over 160 countries from Europe, America, Middle East, Asia, Africa and APAC. Notably England, Germany, France, Sweden, Ireland, Scotland, USA, Canada, UAE, Saudi, Qatar, Kuwait, Malaysia, Indonesia, Myanmar, Newzealand, Australia, South Africa, South Korea, Nigeria, etc AP Physics | MSAT | MCAT | Course for high school, college Homepage https://www.udemy.com/course/modern-physics-semiconductor-electronics-devices/ https://hot4share.com/0s2uhknfi7cv/skdxn.M.P..S..E.D.part1.rar.html https://hot4share.com/xfhd1evho0bz/skdxn.M.P..S..E.D.part2.rar.html https://hot4share.com/fd91wvquj89s/skdxn.M.P..S..E.D.part3.rar.html [b]Download (Uploadgig)[/b] https://uploadgig.com/file/download/406785A670A19b1a/skdxn.M.P..S..E.D.part1.rar https://uploadgig.com/file/download/31eAe8D0c9e20df7/skdxn.M.P..S..E.D.part2.rar https://uploadgig.com/file/download/E992313439fBa756/skdxn.M.P..S..E.D.part3.rar Download ( Rapidgator ) https://rapidgator.net/file/acd1de7def2f0cc76fdaae9cd99d0769/skdxn.M.P..S..E.D.part1.rar.html https://rapidgator.net/file/2cea506ce105e312c90cf32865927ed9/skdxn.M.P..S..E.D.part2.rar.html https://rapidgator.net/file/3635c4a1e64e2f34684c5910760139fe/skdxn.M.P..S..E.D.part3.rar.html Download ( NitroFlare ) https://nitro.download/view/A99B0AF251A7145/skdxn.M.P..S..E.D.part1.rar https://nitro.download/view/F39CCA75872B616/skdxn.M.P..S..E.D.part2.rar https://nitro.download/view/B9CA53F1B987E3C/skdxn.M.P..S..E.D.part3.rar Links are Interchangeable - No Password - Single Extraction
  2. [img]https://i116.fastpic.org/big/2021/1208/0f/f93190b1d2715de548cd14e8169b530f.jpeg[/img] MP4 | Video: h264, 1280x720 | Audio: AAC, 44.1 KHz Language: English | Size: 6.47 GB | Duration: 4h 55m Quantitative & Qualitative analysis of MOS capacitor, MOSFET and BJT What you'll learn MOS Capacitor quantitative analysis MOSFET quantitative and Qualitative treatment BJT analysis Mathematical understanding Requirements My previous course- "Undergraduate course on semiconductor device physics-II" Description This is an undergraduate course on semiconductor device physics. This course is the second part in a series of two courses on semiconductor device physics. For any electronics student understanding transport phenomena of charge carriers, drift current, diffusion current, energy band theory of semiconductors, electron hole pairs(EHPs), Junction formation in a diode, extending the device physics to three terminal devices like BJT and MOSFET is necessary. My previous course "undergraduate course on semiconductor device physics-I" is a prerequisite for complete understanding of this course. Metal-Oxide-Semiconductor combination forms a capacitor and that capacitive action is to be understood well in terms of threshold voltage, CV characteristics. Though our major focus is on ideal MOS capacitor, non-idealities are also discussed up to some extent. Based on the knowledge of MOS capacitor, if we look at the transport of charge carriers in a three terminal device MOSFET it gives a complete picture of all MOSFET transistor structures namely, enhancement MOSFET & depletion MOSFET in both p-type and n-type substrates. A MOSFET is explained up to threshold control. Another transistor is Bipolar junction transistor(BJT). BJT characteristics and device parameters are explained with respect to input and output characteristics. About Author: Mr. Udaya Bhaskar is an undergraduate university level faculty and GATE teaching faculty with more than 15 years of teaching experience. His areas of interest are semiconductors, electronic devices, signal processing, digital design and other fundamental subjects of electronics. He trained thousands of students for GATE and ESE examinations. Who this course is for: Undergraduate students in electronics engineering, Communication engineering Homepage [code]https://www.udemy.com/course/undergraduate-course-on-semiconductor-device-physics-ii/[/code] [code] https://hot4share.com/und2bo0nn98r/rr08x.U..U.C.o.S.D.P.part1.rar.html https://hot4share.com/58wwchzcx7vl/rr08x.U..U.C.o.S.D.P.part2.rar.html https://hot4share.com/8qab46q8jbut/rr08x.U..U.C.o.S.D.P.part3.rar.html https://hot4share.com/h4p7exn8etkw/rr08x.U..U.C.o.S.D.P.part4.rar.html https://hot4share.com/67y8jcc4fuko/rr08x.U..U.C.o.S.D.P.part5.rar.html https://hot4share.com/qtmp08ldlfrd/rr08x.U..U.C.o.S.D.P.part6.rar.html https://hot4share.com/odzlwiuvwtnl/rr08x.U..U.C.o.S.D.P.part7.rar.html [b]Download (Uploadgig)[/b] https://uploadgig.com/file/download/1C062ffb721ba019/rr08x.U..U.C.o.S.D.P.part1.rar https://uploadgig.com/file/download/8a9291a4019d90d3/rr08x.U..U.C.o.S.D.P.part2.rar https://uploadgig.com/file/download/8309375fA2f27401/rr08x.U..U.C.o.S.D.P.part3.rar https://uploadgig.com/file/download/9A7d55cAb5023e60/rr08x.U..U.C.o.S.D.P.part4.rar https://uploadgig.com/file/download/B0696600e4cAc364/rr08x.U..U.C.o.S.D.P.part5.rar https://uploadgig.com/file/download/e420C2C64BC17131/rr08x.U..U.C.o.S.D.P.part6.rar https://uploadgig.com/file/download/ca0f88f5F48a4Ab6/rr08x.U..U.C.o.S.D.P.part7.rar Download ( Rapidgator ) https://rapidgator.net/file/39af67d5866e3c3a92e7c17b741d639f/rr08x.U..U.C.o.S.D.P.part1.rar.html https://rapidgator.net/file/c5d654693c68cc5ae5f8e6a52ea92937/rr08x.U..U.C.o.S.D.P.part2.rar.html https://rapidgator.net/file/f6008ab39d38c3d716919e8cac27ecd2/rr08x.U..U.C.o.S.D.P.part3.rar.html https://rapidgator.net/file/d42307cc6c8ded305818616254ec80f3/rr08x.U..U.C.o.S.D.P.part4.rar.html https://rapidgator.net/file/2b719aa4e6b6d5225ec7331d91fea5c3/rr08x.U..U.C.o.S.D.P.part5.rar.html https://rapidgator.net/file/1b8ce58aada2ef2eabd1a301d77cfe33/rr08x.U..U.C.o.S.D.P.part6.rar.html https://rapidgator.net/file/53fa97f8baa98bcb06505dca29c6740d/rr08x.U..U.C.o.S.D.P.part7.rar.html Download ( NitroFlare ) https://nitro.download/view/7F13BFE436A7D8A/rr08x.U..U.C.o.S.D.P.part1.rar https://nitro.download/view/10F36DBB483D042/rr08x.U..U.C.o.S.D.P.part2.rar https://nitro.download/view/96AC8FE704DAD29/rr08x.U..U.C.o.S.D.P.part3.rar https://nitro.download/view/04EB9D5532398BC/rr08x.U..U.C.o.S.D.P.part4.rar https://nitro.download/view/AB3A07E0BAADBF4/rr08x.U..U.C.o.S.D.P.part5.rar https://nitro.download/view/E25A925CEBCD8A7/rr08x.U..U.C.o.S.D.P.part6.rar https://nitro.download/view/47180341A52A3A5/rr08x.U..U.C.o.S.D.P.part7.rar[/code] [b]Links are Interchangeable - No Password - Single Extraction[/b]
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