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Harmonics in Generated EMF [Year - 3]
 
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Watch this video to learn about the causes of distortion in EMF generated by an alternator and about harmonics and its source. Department: Electrical Engineering Subject: Electrical Machines - III Year: 3
Views: 16232 Mobile Tutor
Why Is Back EMF Used For A DC Motor
 
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Why is back EMF used for a DC motor KNOW MORE ABOUT Why is back EMF used for a DC motor Back emf and its significance in dc motor online what is the of a back motors? Quora quora motors similar 12 mar 2015 when armature winding starts rotating magnetic flux produced by field winding, it cuts lines. F the induced emf developed when rotating conductors of armature between poles magnet, in a dc motor, cut magnetic flux, opposes back motor, formula significance 15 apr 2018 rotation is known as or counter. Why back emf used for a dc motor? Highlight its significance? A of motor youtube. Why back emf is used for a dc motor? Highlight its significance bayt and in motor online why Researchgate. What is back emf? Effect on dc motor and transformers [hindi emf precision microdrivesfaq what's the difference between torque constant, 2 1 3 rotating speed of counter electromotive force calculations, part national instruments. Back emf and its significance in dc motor electrical simple. What is back emf in a dc motor? Circuit globe. Googleusercontent search. Interview questions is why back emf used for a dc motor motor? Highlight its significance. Minimization of torque pulsations in a trapezoidal back emf bldc motor explained bright hub engineering. The 2 1 3 rotating speed of dc motor and counter electromotive force motors brushless are used for servo control due to this feature 7 mar 2017 compound direct current seldom in ordinary industrial figure 5. 12 mar 2015 when the armature winding of a dc motor starts rotating in the magnetic flux produced by the field winding, it cuts the lines of magnetic flux. Counter electromotive force (cemf) in a dc motor this paper discusses the different methods used to reduce torque ripple) trapezoidal back emf permanent magnet (pm) brushless 5 jun 2011 article primarily explains what's motors (bldc), which are where there limitations use of induced developed when rotating conductors armature between poles magnet, motor, cut magnetic flux, opposes 8 apr 2010 as an example, here is what i've understood about operation if so equal battery voltage less drop due brief definition force, term describe. As per lenz's law, this induced emf acts in opposite direction to the armature voltage. Is induced in them as a generator. Hence the emf is called as back and denoted by eb 4 dec 2017 induced developed when rotating conductors of armature between poles magnet, in a dc motor, cut magnetic flux, opposes current flowing through conductor, rotates. What is the purpose of a back emf in dc motors? 31 oct 2017 what significance emf? 1 apr motor? mar are uses 14 jul 2015 why used for Highlight its bayt motor highlight class "imx0m" url? Q webcache. Back emf and its significance in dc motor online what is the of a back motors? Quora. The direction of the induced emf in answer developed when rotating conductors armature between poles magnet, a dc motor, cut magnetic flux, opposes 11 jul 2012external sensors are typically used for speed meas
Views: 76 Daved Lille2
Production of Torque I
 
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Until now, it is custom to discuss each electrical machine separately as if it had a unique existence. This presentation demonstrates that machines have many common features and introduces torque production in dc, synchronous and induction machines as interaction of two magneto-motive forces.
Views: 9831 Professor Essam Hamdi
Under water motor 115 Volts on 240 Volts test No 3
 
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Free running 115 Volts 60 Hz shaded pole motor undergoing an over voltage test at 240 Volts 50 Hz as in test nr2. This motor has a free running armature as is visible in the normal speed of the cooling fan and wild stirrup of the water.
Views: 176885 RODALCO2007
Switched reluctance motor-switched reluctance motor operation-working of switched reluctance motor
 
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Switched reluctance motor- The switched reluctance motor (SRM) is a type of stepper motor, an electric motor that runs by reluctance torque. Unlike common DC motor types, power is delivered to windings in the stator (case) rather than the rotor. This greatly simplifies mechanical design as power does not have to be delivered to a moving part, but it complicates the electrical design as some sort of switching system needs to be used to deliver power to the different windings. With modern electronic devices, precisely timed switching is not a problem, and the SRM is a popular design for modern stepper motors. Its main drawback is torque ripple. However, controller technology that limits torque ripple at low speeds has been demonstrated.[1] An alternate use of the same mechanical design is as a generator when driven mechanically, and the load is switched to the coils in sequence to synchronize the current flow with the rotation. Such generators can be run at much higher speeds than conventional types as the armature can be made as one piece of magnetisable material, a simple slotted cylinder.[2] In this case use of the abbreviation SRM is extended to mean Switched Reluctance Machine, although SRG, Switched Reluctance Generator is also used. A topology that is both motor and generator is useful for starting the prime mover, as it saves a dedicated starter motor. Operating principle- The SRM has wound field coils as in a DC motor for the stator windings. The rotor however has no magnets or coils attached. It is a solid salient-pole rotor (having projecting magnetic poles) made of soft magnetic material (often laminated-steel). When power is applied to the stator windings, the rotor's magnetic reluctance creates a force that attempts to align the rotor pole with the nearest stator pole. In order to maintain rotation, an electronic control system switches on the windings of successive stator poles in sequence so that the magnetic field of the stator "leads" the rotor pole, pulling it forward. Rather than using a troublesome high-maintenance mechanical commutator to switch the winding current as in traditional motors, the switched-reluctance motor uses an electronic position sensor to determine the angle of the rotor shaft and solid state electronics to switch the stator windings, which also offers the opportunity for dynamic control of pulse timing and shaping. This differs from the apparently similar induction motor which also has windings that are energised in a rotating phased sequence, in that the magnetization of the rotor is static (a salient pole that is made 'North' remains so as the motor rotates) while an induction motor has slip, and rotates at slightly less than synchronous speed. This absence of slip makes it possible to know the rotor position exactly, and the motor can be stepped arbitrarily slowly. switched reluctance motor, switched reluctance motor working animation, switched reluctance motor animation, switched reluctance motor working principle, switched reluctance motor youtube, switched reluctance motor basics, switched reluctance motor how it works, switched reluctance motor learn engineering, switched reluctance motor operation, working of switched reluctance motor, switched reluctance motor video, switched reluctance motor working -~-~~-~~~-~~-~- Please watch: "Introduction of Instrument Transformers | Instrument Transformers" https://www.youtube.com/watch?v=lWUljK0YLsY -~-~~-~~~-~~-~-
2008 Toyota Corolla замена генератор generador de reemplazo Yiannis Pagonis
 
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Alternators are used in modern automobiles to charge the battery and to power the electrical system when its engine is running. Until the 1960s, automobiles used DC dynamo generators with commutators. With the availability of affordable silicon diode rectifiers, alternators were used instead. This was encouraged by the increasing electrical power required for cars in this period, with increasing loads from larger headlamps, electric wipers, heated rear windows and other accessories. History The modern type of vehicle alternators were first used by the military from WWII, to power radio equipment on specialist vehicles.[i] Post-war, other vehicles with high electrical demands, such as ambulances and radio taxis, could also be fitted with optional alternators. Alternators were first introduced as standard equipment on a production car by the Chrysler Corporation on the Valiant in 1960, several years ahead of Ford and General Motors. Magnetos in early automobiles Some early automobiles, like the Ford Model T, used a different sort of alternator system: an engine-driven magneto which generated low-voltage alternating current that was supplied to trembler coils, which provided the high voltage needed to generate ignition sparks. (This was different from a true ignition magneto, which generates high voltage directly.) Since such a magneto system only depended on the engine's motion to generate current, it could even be used when starting a manually cranked engine, provided the crank was pulled sharply, so that the magneto would produce enough current for the coils to make good sparks. The Model T incorporated its magneto into the engine flywheel. The first Model Ts used the magneto solely for the trembler coil ignition. Beginning with the 1915 model year, Ford added electric headlights, also powered by the magneto.The magneto circuit was strictly AC, with no battery included. (There was a switch on the ignition coils to use a battery instead, which could be helpful when starting in cold weather, but Ford neither provided a battery nor did it encourage the use of one before it introduced an electric starter in 1919. The owner would have to install the battery himself and charge it externally.) Starting in the 1919 model year, Ford upgraded the Model T to include an electric starter, which was standard for some models and optional for others. This starter installation also included a battery, charged by a conventional dynamo, and the lights were now powered by the battery. However, the flywheel magneto still powered the ignition, and since models without the starter had no battery, they continued to use magneto-powered lights. Advantages over dynamos Alternators have several advantages over direct-current generators (dynamos). They are lighter, cheaper, more rugged, and can provide useful charge at idle speed. They use slip rings having greatly extended brush life over a commutator. The brushes in an alternator carry only DC excitation current, a small fraction of the current carried by the brushes of a DC generator, which carry the generator's entire output. A set of rectifiers (diode bridge) is required to convert AC to DC. To provide direct current with low ripple, a polyphase winding is used and the pole-pieces of the rotor are shaped (claw-pole). Automotive alternators are usually belt-driven at 5-10 times crankshaft speed. The alternator runs at various RPM (which varies the frequency) since it is driven by the engine. This is not a problem because the alternating current is rectified to direct current. Operation Cut-away of an alternator, showing the claw-pole construction; two of the wedge-shaped field poles, alternating N and S, are visible in the centre and the stationary armature winding is visible at the top and bottom of the opening. The belt and pulley at the right hand end drives the alternator. Despite their names, both 'DC generators' (or 'dynamos') and 'alternators' initially produce alternating current. In a so-called 'DC generator', this AC current is generated in the rotating armature, and then converted to DC by the commutator and brushes. In an 'alternator', the AC current is generated in the stationary stator, and then is converted to DC by the rectifiers (diodes). Typical passenger vehicle and light truck alternators use Lundell or 'claw-pole' field construction. This uses a shaped iron core on the rotor to produce a multi-pole field from a single coil winding. The poles of the rotor look like fingers of two hands interlocked with each other. The coil is mounted axially inside this and field current is supplied by slip rings and carbon brushes. These alternators have their field and stator windings cooled by axial airflow, produced by an external fan attached to the drive belt pulley. Compact alternator.
Views: 599 Yiannis Pagonis
What Is A DC Tachogenerator?
 
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What is a DC Tachogenerator? KNOW MORE ABOUT What is a DC Tachogenerator? C tachogenerators instrumentation and control engineering. 1000 rev min on 5 pin din socket. The rotor iron cored and field is a permanent magnet. They are widely used in applications for feedback and 20 jun 2016 the dc tachogenerator is a speed transducer, which develops voltage proportional to of motor connected it. Output proportional to shaft speed output 2 v d. Introduction the word tachometer or tachogenerator comes from greek 'tacho'the gives a continuous voltage sign corre weg dc motors up to frame 132 (inclusive) are built with shaft prepared what is brushed tachogenerator? A gauges speed of rotation disk (from tachos speed, metron measure) as in johannes hbner fabrik elektrischer maschinen gmbh. The armature of the tachogenerator is coupled to machine whose speed be measured tachometer generators and tachogenerators are small ac or dc that output a voltage in proportion rotational shaft find here manufacturers, suppliers & exporters india. Tachogenerator ld didactic. The dc tachogenerator is a small generator. Motors speed control making the in micromo's dc tachogenerators, commutator and brushes are made of a high quality gold alloy. The armature is driven by motor shaft whose speed feedback. An electromechanical generator is a device capable of producing electrical power from mechanical energy, usually the turning shaft. Dc motor tachogenerators med device online. The armature of a dc tachogenerator is similar to design that conventional motor the d. C tachogenerator is kept in the permanent magnetic field. Dc tachogenerator tachometric controls. Dc tachogenerator all industrial manufacturers directindustry. Tachogenerators that can be used as actual value generators for d. What is electrical tachometer? Dc & ac tachometer generator d. Tachogenerator all industrial manufacturers directindustry. Siemensstrasse 7 d 35394 giessen germany ideas and solutionstype tdp 1 tacho generators are analog transducers for instrumentation control technology. Armature is 18 dec 2015 dc tachometer2. The task of these permanently (magnet) excited generators is to convert dc tachogenerators give you accurate voltage output proportional speed its mover. Tachogenerators electronics tachogenerators allaboutcircuits textbook direct "imx0m" url? Q webcache. Googleusercontent search. C tachogenerators is a type of electrical type's which can also be used for speed measurement. The armature of the d. Tachogenerators guide what is a brushed tachogenerator dc tacho generator type tdp 1,2 hbner giessendc tachogenerators from tachometric controls. This results in a very low, constant the dc tachometer works on principle that when closed conductor moves drag cup tachogenerator generates ripple free output voltage fits to base of 63 and 64 series electrical machines provides d. Different types of tachogenerators that we offer. Ctachogeneratorconstruction an armature is rotating type & this m
Views: 86 Sea of Question
DC Motor - 3 Coil, How it works ?
 
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The three-coil DC motor is one of the most ingenious inventions in the electrical world. Its construction is so simple and unique that understanding the working principles behind it will be a real fun! Please support us at Patreon.com so that we can add one more member to the team and will be able to release 2 educational videos/month. https://www.patreon.com/LearnEngineering Voice over artist : https://www.fiverr.com/voiceonthemove
Views: 151057 Learn Engineering
OPEN DC MOTOR
 
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I GET THIS IDEA FROM RODALCO 2007 MAGNETRON MAGNET AND VCR MOTOR ARMATURE DRIVEN WITH 12V FROM CAR BATTERY.
Views: 1479 MrTesla1337
Lecture - 25 DC Generators
 
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Lecture series on Basic Electrical Technology by Prof.L.Umanand, Principal Research Scientist, Power Electronics Group, CEDT, IISc Bangalore. For more details on NPTEL visit http://nptel.iitm.ac.in
Views: 195209 nptelhrd
Effects of Harmonic Distortion on a Motor - A GalcoTV Tech Tip
 
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"Effects of Harmonic Distortion on a Motor", presented by GalcoTV. Instead of contributing to the turning of the motor shaft, the excess energy could circulate into the windings of the motor and lead to internal energy loss or an increase in heat. This can lead to a deterioration of the insulation and decrease the motor efficiency... For more Tech Tip Videos visit GalcoTV: http://www.youtube.com/user/GalcoTV Check out Galco.com at http://www.galco.com?source=YouTubeTT Galco is a Factory Authorized Stocking Distributor for Over 150 Brands of Industrial Electrical & Electronic Automation, Controls and Component Products; On-Site and Send-In Repair Services for Industrial Control & Automation Products for Over 2,000 Brands; Engineered Systems Integration, Retrofits & Upgrades for Variable Speed Drives, CNC, PLC Systems, Dynamometers & Test Stand Applications. Visit us online at http:// www.galco.com or call us at 800-337-1720. http://www.galco.com/safety With respect to the usage, installation or assembly of any products described in this video, Galco Industrial Electronics, Inc., a Michigan corporation, encourages you to follow the requirements and/or guidelines of: i) the Occupational Safety and Health Act of 1970, Public Law 91-596, as amended, and all laws, rules and regulations implemented in relation thereto; ii) the National Electric Code®; and iii) NFPA 70E®. Any installation, assembly or work described in this video should be performed by a qualified licensed electrician. GTV, Galco, galco.com, Galco Industrial Electronics, and Galco Industrial Electronics, Inc. are registered and/or pending registered trademarks under the U.S. Patent and Trademark Office, assumed names, registered domain names, and/or trade names of Galco Industrial Electronics, Inc., a Michigan corporation. LEGAL DISCLAIMER: While we have made every attempt to ensure that the information provided is accurate and has been obtained from reliable sources, Galco is not responsible for any errors or omissions, or for the results obtained from the use of this information. All information is provided "as is", with no guarantee of completeness, accuracy, timeliness or of the results obtained from the use of this information, and without warranty of any kind, express or implied, including, but not limited to warrantees of performance, merchantability and fitness for a particular purpose. At all times you should defer to the instructions and safety guidelines issued by the manufacturer. In no event will Galco, its agents or employees thereof be liable to you or anyone else for any decision made or action taken in reliance on the information provided to you or for any consequential, special or similar damages, even if advised of the possibility of such damages.
Views: 3958 GalcoTV
Rainbow and big 6 kW DC motor testrun on variac
 
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20 seconds of some segments of today's rainbow while driving back from work. This was recorded on West Coast Road, Parrs Park, Glen Eden. After watching Larry's video HDXFH where he tests his F&P magnet motor. I had to crank up my 6 kW DC motor and do a load test on my repaired 10 Amp variac. While shifting stuff around I found this 2 kVA transformer and may as well give that a test run too. Wired it up a 35 Amp rectifier block and buffer capacitor, DC ammeter and release the electrons. link to HDXFH http://youtu.be/CNYe5fNcd8s I am planning to make a variable frequency drive with this motor and couple it to a three phase AC motor and excite that with some capacitors, and hope that works.
Views: 21914 RODALCO2007
Commutation DC motor
 
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Look the update with audio feautures: http://www.youtube.com/watch?v=ASCWr0noEYU
Views: 86330 MaxonMotor
Lecture - 32 DC Motor Drives
 
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Lecture Series on Industrial Automation and Control by Prof. S. Mukhopadhyay, Dept.of Electrical Engineering, IIT Kharagpur.For more details on NPTEL visit http://nptel.iitm.ac.in.
Views: 64222 nptelhrd
Tachogenerator - Control System Components - Control Systems | Ekeeda.com
 
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Video Lecture on Tachogenerator from Control System Components of Control Systems of EXTC, Electronics & Electrical Engineering. Watch Next Videos of Chapter Control System Components:- 1) Potentiometer - Control System Components - Control Systems | Ekeeda.com - https://youtu.be/X-A5oL76ys8 2) Stepper Motors - Control System Components - Control Systems | Ekeeda.com - https://youtu.be/1nKJNxtNUOc Watch Next Videos of Chapter Control System Components:- 1) A.C. Servomotors & D.C. Servomotors - Control System Components - Control Systems | Ekeeda.com - https://youtu.be/nq3CyAWsS6A Access the complete playlist of Control Systems https://goo.gl/GQrMXf Subscribe to Ekeeda Channel to access more videos http://gg.gg/Subscribe-Now #Tachogenerator #ControlSystemComponents #OnlineEngineeringVideoLectures #EngineeringLectures #DegreeEngineeringLectures #ElectricalNetworks #CircuitTheory&Networks #EngineeringOnlineVideoLectures #OnlineVideoLectures #EkeedaOnlineLectures #EkeedaVideoLectures #EkeedaVideoTutorial Thanks For Watching. You can follow and Like us on following social media. Website - http://ekeeda.com Parent Channel - https://www.youtube.com/c/ekeeda Facebook - https://www.facebook.com/ekeeda Twitter - https://twitter.com/Ekeeda_Video LinkedIn- https://www.linkedin.com/company-beta/13222723/ Instgram - https://www.instagram.com/ekeeda_/ Pinterest - https://in.pinterest.com/ekeedavideo You can reach us on [email protected] Happy Learning : )
Views: 13732 Ekeeda
What is SWITCHED RELUCTANCE MOTOR? What does SWITCHED RELUCTANCE MOTOR mean?
 
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✪✪✪✪✪ WORK FROM HOME! Looking for US WORKERS for simple Internet data entry JOBS. $15-20 per hour. SIGN UP here - http://jobs.theaudiopedia.com ✪✪✪✪✪ ✪✪✪✪✪ The Audiopedia Android application, INSTALL NOW - https://play.google.com/store/apps/details?id=com.wTheAudiopedia_8069473 ✪✪✪✪✪ What is SWITCHED RELUCTANCE MOTOR? What does SWITCHED RELUCTANCE MOTOR mean? SWITCHED RELUCTANCE MOTOR definition - SWITCHED RELUCTANCE MOTOR explanation. Source: Wikipedia.org article, adapted under https://creativecommons.org/licenses/by-sa/3.0/ license. The switched reluctance motor (SRM) is a type of a stepper motor, an electric motor that runs by reluctance torque. Unlike common DC motor types, power is delivered to windings in the stator (case) rather than the rotor. This greatly simplifies mechanical design as power does not have to be delivered to a moving part, but it complicates the electrical design as some sort of switching system needs to be used to deliver power to the different windings. With modern electronic devices, precisely timed switching is not a problem, and the SRM is a popular design for modern stepper motors. Its main drawback is torque ripple. An alternate use of the same mechanical design is as a generator when driven mechanically, and the load is switched to the coils in sequence to synchronize the current flow with the rotation. Such generators can be run at much higher speeds than conventional types as the armature can be made as one piece of magnetisable material, a simple slotted cylinder. In this case use of the abbreviation SRM is extended to mean Switched Reluctance Machine, although SRG, Switched Reluctance Generator is also used. A topology that is both motor and generator is useful for starting the prime mover, as it saves a dedicated starter motor. The SRM has wound field coils as in a DC motor for the stator windings. The rotor however has no magnets or coils attached. It is a solid salient-pole rotor (having projecting magnetic poles) made of soft magnetic material (often laminated-steel). When power is applied to the stator windings, the rotor's magnetic reluctance creates a force that attempts to align the rotor pole with the nearest stator pole. In order to maintain rotation, an electronic control system switches on the windings of successive stator poles in sequence so that the magnetic field of the stator "leads" the rotor pole, pulling it forward. Rather than using a troublesome high-maintenance mechanical commutator to switch the winding current as in traditional motors, the switched-reluctance motor uses an electronic position sensor to determine the angle of the rotor shaft and solid state electronics to switch the stator windings, which also offers the opportunity for dynamic control of pulse timing and shaping. This differs from the apparently similar induction motor which also has windings that are energised in a rotating phased sequence, in that the magnetization of the rotor is static (a salient pole that is made 'North' remains so as the motor rotates) while an induction motor has slip, and rotates at slightly less than synchronous speed. This absence of slip makes it possible to know the rotor position exactly, and the motor can be stepped arbitrarily slowly. If the poles A0 and A1 are energised then the rotor will align itself with these poles. Once this has occurred it is possible for the stator poles to be de-energised before the stator poles of B0 and B1 are energized. The rotor is now positioned at the stator poles b. This sequence continues through c before arriving back at the start. This sequence can also be reversed to achieve motion in the opposite direction. This sequence can be found to be unstable while in operation, under high load, or high acceleration or deceleration, a step can be missed, and the rotor jumps to wrong angle, perhaps going back one instead of forward three. A much more stable system can be found by using the following "quadrature" sequence. First, stator poles A0 and A1 are energized. Then stator poles of B0 and B1 are energized which pulls the rotor so that it is aligned in between the stator poles of A and B. Following this the stator poles of A are de-energized and the rotor continues on to be aligned with the stator poles of B, this sequence continues through BC, C and CA before a full rotation has occurred. This sequence can also be reversed to achieve motion in the opposite direction. As at any time two coils are energised, and there are more steps between positions with identical magnetisation, so the onset of missed steps occurs at higher speeds or loads.
Views: 14943 The Audiopedia
Transformer Animation
 
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2 animations made with blender showing how electric transformers work. The first shows how it looks with conventional current (- to +), the second shows the electron flow (+ to -). Created and animated in Blender, minor edits in Adobe Premiere. Willing to make some more of these if people request them, Perry.
Views: 1149356 alexgeekcouk
45Kw DC Brushless motor construction
 
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New outrunner motor : https://www.youtube.com/watch?v=KedsQtPd-po How to make a brushless motor step by step. For business enquiries : email: [email protected] See also 3D modeling of the motor. https://www.youtube.com/watch?v=0vjWmRNo6s0 See my website with the winding calculations http://www.masinaelectrica.com/45kw-bushless-motor-design/ Designing a brushless motor from zero Magnets: 40pcs 35UH Slots: 48 Winding : AabBCcaABbcCAabBCcaABbcC Nominal Voltage: 300v Max amp: 150A Weight: 17Kg Speed: 2600rpm Hall sensors: TLE4905 Infineon Software : Autocad 3D Inventor 2015, FEMM 4.2, MotorCad 7 Usage: electric car, opel agila
Views: 962495 iulian207
Dc motor modelling using equation matlab
 
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for more MATLAB SIMULINK electrical and electronics simulation video go to YOUTUBE CHANNEL - karthik kumar matlab WEBSITE : https://rkarthikkumar.weebly.com/ MATLAB FILE :https://rkarthikkumar.weebly.com/matlab-circuit-files.html BLOG SPOT : http://shareknowledgerkk.blogspot.in/
lecture 24 - DC Machines Part 2
 
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Lecture series on Basic Electrical Technology by Prof.L.Umanand, Principal Research Scientist, Power Electronics Group, CEDT, IISc Bangalore. For more details on NPTEL visit http://nptel.iitm.ac.in
Views: 153316 nptelhrd
Lecture 09   Aircraft Electrical System
 
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This lecture contains following topics - Alternator / Generator - Batteries (Lead Acid/NiCd) - Specification of batteries - Switches
how to repair a small dc motor(broken connecting pin)
 
02:10
no need to throw the motor after breaking its one of the terminal pin....just see the video ,how to repair it. https://paypal.me/Addddy
Views: 368366 DIY UnbOx
Learn how to model a DC generator / Motor in Matlab SIMULINK
 
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The DC machine can be simulated in almost all modes in Matlab Simulink environment. This video tutorial is about how you can model the DC motor in Simulink. Learn more about Matlab in my upcoming videos. #Simulink #Matlab #DCMotor Email: [email protected]
Views: 104670 Urban School
Single Phase Induction Motor, How it works ?
 
04:06
Help us to make future videos for you. Make LE's efforts sustainable. Please support us at Patreon.com ! https://www.patreon.com/LearnEngineering Working of Single phase induction motors is explained in this video with help of animation. When only single power phase is available, single phase motors are the natural choice out of wide variety of electric motors. In this video concept of double revolving field theory, main winding, auxiliary winding, and the way motor is made self start is explained in detailed way.
Views: 1173163 Learn Engineering
A. C. Motor | Kannada | Fun Motor!
 
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DUBBED IN KANNADA by Mr. P. K. Nanavati. You can make this AC Motor with just an old choke, bulb, copper wire and permanent magnets. First take the copper wire and make a coil with 1200 turns separated by 3 layers of paper. Break open an old choke. Remove the epoxy and the copper windings. We only need the U-shaped iron core. The choke is a transformer. Tape the iron core to make two U-shaped iron cores. Motors work on the basic principle of magnetic induction. Whenever current is passed through a conductor it produces magnetic field. And when we pass alternating current through the conductor it will produce alternating magnetic field or a spinning magnetic field. This spinning field will interact with the permanent magnet and will try to repel the magnet. And since the magnet will be free to move it will start spinning. This is the basic principle of AC motor. Fix this U shaped iron core on the wooden board using screws. Place another support to put the rotating magnets. You need to connect a 60-V bulb to the coil in series. This is because copper wire in our coil has very little resistance and unless we connect it to a load it will short our 230-volt AC power supply and the coil will burn. After inserting the coil in one of the iron core insert the other iron core on top. Attach two magnets to the cycle spoke. This will be our rotor. Now place the rotor in the space between the two iron cores, but it will not rotate. The moment we switch on the current, magnetic field passes very strongly in the space between the iron cores. It interacts with the permanent magnet and because it is a rotating magnetic field the motor starts spinning too. It is a beautiful sight to behold. The core laminations concentrate the EMF in the space between the two iron cores. Children can have great fun with this model. Do this experiment under ADULT GUIDANCE and do not forget to connect the bulb in series. This work was supported by IUCAA and Tata Trust. This film was made by Ashok Rupner TATA Trust: Education is one of the key focus areas for Tata Trusts, aiming towards enabling access of quality education to the underprivileged population in India. To facilitate quality in teaching and learning of Science education through workshops, capacity building and resource creation, Tata Trusts have been supporting Muktangan Vigyan Shodhika (MVS), IUCAA's Children’s Science Centre, since inception. To know more about other initiatives of Tata Trusts, please visit www.tatatrusts.org
Views: 11830 Arvind Gupta
What is COGGING TORQUE? What does COGGING TORQUE mean? COGGING TORQUE meaning & explanation
 
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What is COGGING TORQUE? What does COGGING TORQUE mean? COGGING TORQUE meaning - COGGING TORQUE definition - COGGING TORQUE explanation. SUBSCRIBE to our Google Earth flights channel - https://www.youtube.com/channel/UC6UuCPh7GrXznZi0Hz2YQnQ Source: Wikipedia.org article, adapted under https://creativecommons.org/licenses/by-sa/3.0/ license. Cogging torque of electrical motors is the torque due to the interaction between the permanent magnets of the rotor and the stator slots of a Permanent Magnet (PM) machine. It is also known as detent or 'no-current' torque. This torque is position dependent and its periodicity per revolution depends on the number of magnetic poles and the number of teeth on the stator. Cogging torque is an undesirable component for the operation of such a motor. It is especially prominent at lower speeds, with the symptom of jerkiness. Cogging torque results in torque as well as speed ripple; however, at high speed the motor moment of inertia filters out the effect of cogging torque. A summary of techniques used for reducing cogging torque: 1. Skewing stator stack or magnets. 2. Using fractional slots per pole. 3. Modulating drive current waveform. 4. Optimizing the magnet pole arc or width. Almost all the techniques used against to cogging torque also reduce the motor counter-electromotive force and so reduce the resultant running torque. A slotless and coreless permanent magnet motors does not have any cogging torque. Model railway motors usually have a 2-pole permanent magnet and 3, 5 or 7 poles on the armature to reduce cogging torque.
Views: 830 The Audiopedia
3 Phase Rectifying Circuit (HD)
 
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This animation shows the flow of current in 3-phase AC to DC rectification circuit, a well as a plot of the three input currents and the output current.
Lecture - 33 DC and BLDC Servo Drives
 
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Lecture Series on Industrial Automation and Control by Prof. S. Mukhopadhyay, Dept.of Electrical Engineering, IIT Kharagpur. For more details on NPTEL visit http://nptel.iitm.ac.in.
Views: 23626 nptelhrd
How to remove & replace bearings in a electric motor.
 
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Removal and installation of motor bearings.... the DIY way!
Views: 58187 Carl Bartlett
what is voltage,current ,power and resistance in telugu
 
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In this video i will explain about voltage ,current,power and resistance in telugu
Views: 139187 AP WORLD
Taylormade@AUT: Y2 undergraduate DC Motor Control: Boost Convertor
 
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Second-year undergraduate students taking my Power Electronics class were tasked with a 'build-it' for part of their internal assessment. For this project the students where provided with: - a 50Hz, Three-Phase, 10A(per line), AC supply, - a DC machine (rated to 220V, 2.4A, 1600rpm) with a variable load attached to it. - a video of the machine and measurements, on https://www.youtube.com/watch?v=P0GTqskkGHk The students had to take the 50Hz, three-phase, 10A(per line), AC supply, and power the DC machine. How they did that - and to what degree - was up to the students, and they were assessed on the design and construction of their solution. It is my pedagogical position that students should not have boundaries placed on their learning, and that defined goals and metrics limit the student. The minimum had been established (to use the AC supply to power and control the DC machine) so I set a task (to design and build a solution) and see what wonders evolved. This student submission took a low-voltage rectified AC wave form of 70VDC, and boosted it to 70-200V, and it worked wonderfully. Initial problems these students had was in dealing the with motors back-EMF, and this was overcome with snubbing circuitry and a flyback diodes
Views: 193 [email protected]
The Linear Machine (d), 11/4/2014
 
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Description
Views: 2244 Lutfi Al-Sharif
RF IMS POWER SUPPLY  pt 3
 
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Book available soon at our Non Profit Green energy web http://www.lablancinventors.org/ visit our web site for more pics of this radio we are writing the book on at http://www.lablancinventors.org/pics ------------------------------------------------------------------------------------------------------------ The transformers were at: 127* F for T3 (filament) after 2 hours with no fan cooling. T1 ran 104*F after 2 hours (high voltage transformer). D1 diode for filament power supply ran at 110*F after 2 hours Q2 pass transistor for filament regulator circuit ran 101*F after 2 hours. Fan for top case was turned on after 2 hours and marked cooling took place within 5 minutes: T3 ran at 106*F after 5 minutes of cooling T1 ran at 96*F after 5 minutes of cooling D1 diode ran at 98*F after 5 minutes of cooling Q2 ran at 90*F after 5 minutes of cooling. ambient temp: 80*F --------------------------------------------------------------------------- 41 minutes after fan cooling turned on: T1= 85*F T3= 92*F D1= 92.6*F Q2= 88*F Ambient temp: 80.6*F -------------------------------------------------------- 58 minutes after fan cooling turned on: T1= 83*F T3= 92*F D1= 92.1*F Q2= 86*F ambient temp: 80.9*F -------------------------------------------------------- The efficiency of the high voltage power supply is decent with a 82% AC to DC voltage conversion when 78 watts is produced. But the efficiency improves when output is jumps to 302 watts; then the efficiency improves to 87%. The filament section is poor due to the regulator circuit that is needed to control variations in filament voltage that is critical to tube life and RF stability. The AC to DC conversion is only 42% when 31 watts is produced. ------------------------------------------------------------------------------------------------------------------------------------------------------ Note: the power supply is much cleaner concerning ripple noise when the scope and power supply share an isolation transformer. ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ This is a teaser for the 6 MHz to 27.2 MHz radio frequency transmitter prototype we are designing and building. The book to build this unit will be available in late 2016. The high voltage vacuum tube power supply is Hammond 278CX transformer at 800 volts filtered DC X 535 ma. (that's 428 watts available). This HV power supply has a built in 500 watt Staco 501C Variac to adjust it. It's filtered with 500uF X 900 VDC caps and uses a DC choke to also regulate and filter it. The filament power supply is also filtered with 47,000uF caps and 10 amp DC choke and voltage regulated with adjustable circuit. The PI network has a 7 inch long adjustable coil and 2 adjustable multi-turn air caps to tune the tank circuit and load. There are pin jacks all over this unit to check amps, volts and frequency. It has built in frequency meter and Hobbs meter to track time use. Adjustable Pi network is also for changing frequencies and adjusting for loading conditions. Designed for 50 ohm output. Can run function generator input instead of easy changeable crystals. Can run 3 large socket vacuum tubes like the 6L6GC and 1 KT88. It also has provisions for 4 small socket vacuum tubes or RF transformer in small socket case. Can make an armature Radio transmitter with these provisions. An air cooled vacuum tube cooling system that controls tube temps as well as transformers, heat sinks and control transistor for the filament power supply is powered with 2 large 120 VAC box fans. ................................................................... Note the Filament and Plate power supply weigh 40 pounds together. ------------------------------------------------------------------------------------------------------------------ Industrial, Scientific and Medical (ISM) equipment ISM equipment The term Industrial, Scientific and Medical (ISM) generally refers to equipment or devices that utilize radio frequency energy to perform work. The IEC defines the term; “Qualifies equipment or appliances designed to generate and use locally radio frequency energy for industrial, scientific, medical, domestic or similar purposes, excluding applications in the field of telecommunications”
Need of Three Phase Supply - Three Phase Circuits - Basic Electrical Engineering - First Year Engg
 
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Video Lecture on Need of Three Phase Supply of Chapter Three Phase Circuits of Subject Basic Electrical Engineering for First-Year Engineering Students. Watch Previous Videos of Playlist of Basic Electrical Engineering:- 1) Parallel Resonance in AC Circuit - AC Circuits - Basic Electrical Engineering - First Year Engg - https://www.youtube.com/watch?v=sr9lC8Pc7f4 2) Parallel Resonance in AC Circuit - Problem 1 - AC Circuits - Basic Electrical Engineering - https://www.youtube.com/watch?v=J3lojTnIrWQ Watch Next Videos of Playlist of Basic Electrical Engineering:- 1) Generation of Three Phase Supply - Three Phase Circuits - Basic Electrical Engineering - First Year - https://www.youtube.com/watch?v=CbcU5xS-OS8 2) Three Phase Supply Connections - Three Phase Circuits - Basic Electrical Engineering - First Year - https://www.youtube.com/watch?v=sdKJYVtOaQc Access the complete playlist of Basic Electrical Engineering:- http://gg.gg/Basic-Electrical-Engineering Access the complete playlist of Three Phase Circuits:- http://gg.gg/Three-Phase-Circuits Subscribe to Ekeeda Channel to access more videos:- http://gg.gg/Subscribe-Now To Access Complete Course of Basic Electrical Engineering Basic Electrical Engineering (Mumbai University - Mechanical Engineering - SEM I) Click Below:- http://www.ekeeda.com/course/SEM-I/Mumbai-University/Mechanical-Engineering/Basic-Electrical-Engineering/114 #ThreePhaseCircuits #BasicElectricalEngineering #beevideolectures #BasicElectricalEngineeringVideos #BasicElectricalEngineeringVideoTutorials #BasicElectricalEngineeringTutorials #BasicElectricalEngineeringVideoLectures #BasicElectricalEngineeringOnlineLectures #basicelectricalengineeringlectures Thanks For Watching. You can follow and Like us in following social media. Website - http://ekeeda.com Parent Channel - https://www.youtube.com/c/ekeeda Facebook - https://www.facebook.com/ekeeda Twitter - https://twitter.com/Ekeeda_Video LinkedIn- https://www.linkedin.com/company-beta/13222723/ Instgram - https://www.instagram.com/ekeeda_/ Pinterest - https://in.pinterest.com/ekeedavideo You can reach us at [email protected] Happy Learning : )
Views: 80454 Ekeeda
starter tester demonstration pt1
 
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starter tester
Views: 380 Mike Smithson
Alternator Causing Parasitic Drain
 
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Have you performed a parasitic drain test with every possible fuse removed yet still get a high amperage draw? Check the alternator! It has a direct feed and depends on a series of diodes to keep voltage from draining from the battery when the car is off. There are a total of 11 diodes inside of this particular alternator. This is a great case study of a bad diode rectifier. Here is a link to a diagram for this particular alternator. It's a 1994 Mazda MX-6 2.5L KL with a stock 90 amp alternator. http://www.pmx626.info/US/Mazda%20626%20&%20MX-6/Work%20Shop%20Manuals/Scans/1994%20WSM/G-07.jpg
Views: 157452 DJDevon3
Vector control (motor)
 
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Vector control, also called field-oriented control, is a variable-frequency drive control method where the stator currents of a three-phase AC electric motor are identified as two orthogonal components that can be visualized with a vector. One component defines the magnetic flux of the motor, the other the torque. The control system of the drive calculates from the flux and torque references given by the drive's speed control the corresponding current component references. Typically proportional-integral controllers are used to keep the measured current components at their reference values. The pulse-width modulation of the variable-frequency drive defines the transistor switching according to the stator voltage references that are the output of the PI current controllers. FOC is used to control the AC synchronous and induction motors. It was originally developed for high-performance motor applications that are required to operate smoothly over the full speed range, generate full torque at zero speed, and have high dynamic performance including fast acceleration and deceleration. However, it is becoming increasingly attractive for lower performance applications as well due to FOC's motor size, cost and power consumption reduction superiority. It is expected that with increasing computational power of the microprocessors it will eventually nearly universally displace single-variable scalar volts-per-Hertz control. This video is targeted to blind users. Attribution: Article text available under CC-BY-SA Creative Commons image source in video
Views: 9031 Audiopedia
Power inverter
 
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A power inverter, or inverter, is an electronic device or circuitry that changes direct current (DC) to alternating current (AC). The input voltage, output voltage and frequency, and overall power handling depend on the design of the specific device or circuitry. The inverter does not produce any power; the power is provided by the DC source. This video is targeted to blind users. Attribution: Article text available under CC-BY-SA Creative Commons image source in video
Views: 99 Audiopedia
Lecture - 22 Power Electronics
 
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Lecture Series on Power Electronics by Prof. B. G. Fernandes, Department of Electrical Engineering, IIT Bombay. For more details on NPTEL visit http://nptel.iitm.ac.in
Views: 20375 nptelhrd
Rectifier
 
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A rectifier is an electrical device that converts alternating current (AC), which periodically reverses direction, to direct current (DC), which flows in only one direction. The process is known as rectification. Physically, rectifiers take a number of forms, including vacuum tube diodes, mercury-arc valves, copper and selenium oxide rectifiers, semiconductor diodes, silicon-controlled rectifiers and other silicon-based semiconductor switches. Historically, even synchronous electromechanical switches and motors have been used. Early radio receivers, called crystal radios, used a "cat's whisker" of fine wire pressing on a crystal of galena (lead sulfide) to serve as a point-contact rectifier or "crystal detector". Rectifiers have many uses, but are often found serving as components of DC power supplies and high-voltage direct current power transmission systems. Rectification may serve in roles other than to generate direct current for use as a source of power. As noted, detectors of radio signals serve as rectifiers. In gas heating systems flame rectification is used to detect presence of flame. This video is targeted to blind users. Attribution: Article text available under CC-BY-SA Creative Commons image source in video
Views: 243 Audiopedia
Lecture - 25 Power Electronics
 
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Lecture Series on Power Electronics by Prof. B. G. Fernandes, Department of Electrical Engineering, IIT Bombay. For more details on NPTEL visit http://nptel.iitm.ac.in
Views: 22481 nptelhrd
Lecture - 29 Wind Electrical Conversion - III
 
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Lecture Series on Energy Resources and Technology by Prof.S.Banerjee,Department of Electrical Engineering, IIT Kharagpur. For more details on NPTEL visit http://nptel.iitm.ac.in.
Views: 10055 nptelhrd
Lecture - 14 Power Electronics
 
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Lecture Series on Power Electronics by Prof. B.G. Fernandes, Department of Electrical Engineering,IIT Bombay. For more details on NPTEL visit http://nptel.iitm.ac.in
Views: 28373 nptelhrd
A Full Wave Controlled Rectifier Drive for a DC Motor (15.3 Rashid) (b), 21/4/2016
 
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finding the required firing angle (alpha) for a lower speed at the same torque. This requirement is not in the original example 15.3 in M. Rashid.
Views: 553 Lutfi Al-Sharif
Alternator (automotive)
 
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Alternators are used in modern automobiles to charge the battery and to power the electrical system when its engine is running. Until the 1960s, automobiles used DC dynamo generators with commutators. With the availability of affordable silicon diode rectifiers, alternators were used instead. This was encouraged by the increasing electrical power required for cars in this period, with increasing loads from larger headlamps, electric wipers, heated rear windows and other accessories. This video is targeted to blind users. Attribution: Article text available under CC-BY-SA Creative Commons image source in video
Views: 11 Audiopedia
Inverter (electrical) | Wikipedia audio article
 
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This is an audio version of the Wikipedia Article: https://en.wikipedia.org/wiki/Power_inverter 00:00:48 1 Input and output 00:00:57 1.1 Input voltage 00:02:07 1.2 Output waveform 00:03:00 1.2.1 Square wave 00:03:28 1.2.2 Sine wave 00:05:20 1.2.3 Modified sine wave 00:09:14 1.3 Output frequency 00:09:44 1.4 Output voltage 00:10:21 1.5 Output power 00:11:10 2 Batteries 00:12:42 3 Applications 00:12:51 3.1 DC power source usage 00:13:22 3.2 Uninterruptible power supplies 00:13:49 3.3 Electric motor speed control 00:14:58 3.3.1 In refrigeration compressors 00:16:14 3.4 Power grid 00:17:06 3.5 Solar 00:17:52 3.6 Induction heating 00:19:05 3.7 HVDC power transmission 00:19:39 3.8 Electroshock weapons 00:20:39 3.9 Miscellaneous 00:21:26 4 Circuit description 00:21:36 4.1 Basic design 00:25:09 4.2 Advanced designs 00:29:15 4.3 More on achieving a sine wave 00:30:33 4.3.1 Enhanced quantization 00:31:13 4.4 Three-phase inverters 00:32:55 5 Size 00:33:21 6 History 00:33:30 6.1 Early inverters 00:35:06 6.2 Controlled rectifier inverters 00:38:04 6.3 Rectifier and inverter pulse numbers 00:39:40 6.4 Other notes 00:40:15 7 Research 00:40:39 8 See also Listening is a more natural way of learning, when compared to reading. Written language only began at around 3200 BC, but spoken language has existed long ago. Learning by listening is a great way to: - increases imagination and understanding - improves your listening skills - improves your own spoken accent - learn while on the move - reduce eye strain Now learn the vast amount of general knowledge available on Wikipedia through audio (audio article). You could even learn subconsciously by playing the audio while you are sleeping! If you are planning to listen a lot, you could try using a bone conduction headphone, or a standard speaker instead of an earphone. Listen on Google Assistant through Extra Audio: https://assistant.google.com/services/invoke/uid/0000001a130b3f91 Other Wikipedia audio articles at: https://www.youtube.com/results?search_query=wikipedia+tts Upload your own Wikipedia articles through: https://github.com/nodef/wikipedia-tts Speaking Rate: 0.887532851640203 Voice name: en-US-Wavenet-F "I cannot teach anybody anything, I can only make them think." - Socrates SUMMARY ======= A power inverter, or inverter, is an electronic device or circuitry that changes direct current (DC) to alternating current (AC).The input voltage, output voltage and frequency, and overall power handling depend on the design of the specific device or circuitry. The inverter does not produce any power; the power is provided by the DC source. A power inverter can be entirely electronic or may be a combination of mechanical effects (such as a rotary apparatus) and electronic circuitry. Static inverters do not use moving parts in the conversion process. Circuitry that performs the opposite function, converting AC to DC, is called a rectifier.
Views: 6 wikipedia tts
Mod-01 Lec-57 Lecture 57
 
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Analog IC Design by Dr. Nagendra Krishnapura, Department of Electronics & Communication Engineering, IIT Madras. For more details on NPTEL visit http://nptel.iitm.ac.in
Views: 2191 nptelhrd