Lecture - 2 Electronic Devices 1

[khesa1000]

my concept was thoroughly cleared after these lectures ,very nice explanation tks a lot sir

[samlongman1]

These are brilliant lectures. Thank you so much. Nptelhrd = Heros!

[CHIBA280CRV]

I have to say, you are one hell of an instructor, thank you Prof.Natarajan!! i will go over your video, i got a bit lost with the whole 46:30 thing, but i will give it another shot..

[osamahi]

Thank you very much

[msyaini]

it s very useful... thanku.... for learned us by doing....

[LouisianaGatorGirl]

Being new to electronics, I highly appreciate your excellent lectures which are clearly explained and easy to understand. Thank you!

[tsniit]

Yes. Right on dot.

[NuntiusLegis]

Great lectures.

I am a beginner and got a bit confused by a comment which assumes that at 45:33 the values for amperes / volts were "interchanged" or "substracted"; I guess this is false and in truth the values result from Ohm's law as follows?

I = V / R(total) = 6 / (6+1) = 0,857 amperes

V(internal) = R(internal) * I = 1 * 0,857 = 0,857 volts

V(load) = R(load) * I = 6 * 0,857 = 5,142 volts

Is this correct, can Ohm's law be applied seperately to the voltages / resistors like this? Thanks.

[INeed2LiveLonger]

There are 2 mistakes here:

46:30 with 6V battery and zero ohm internal resistance we will got 6V across load, not 5V

another mistake is that Ohms law applies to variable resistors too, what he meant probably is that current is not factor of voltage only, but voltage heat light etc in variable resistors

[mohitluckyonly]

Thank you very much sir, i have never gained this kind of knowledge.

I have no words to thank you.

Mohit Kumar

delhi

[TheMillenniumactress]

we learned a basic circuit in school they never taught us this here in america in high school. this is actually helping me for my asvab test

[truirf]

Your Lectures are really great and of high standard. From an Australian

[shubhamgirdhar92]

thnks sir very helpful lecture especially for those who cannot afford to go to a college

[shailendrapatel2007]

sir , i m very thankful to u and nptelhrd, thank u so much

[naminator27]

Great Lectures, Thanks

[SirVaughnElric]

Rodin Coil :p

[yoyoskp]

thank u very much , it is really usefull

[tachira65]

Prof. T.S Natarajan,

Thank you so much for your videos! i have been learning a lot...

Again, Thanks From Venezuela and the USA, too!!!

[max8699able]

Thank you Professor Natarajan. I am a robotics technical instructor and wanting to learn more in electronics and your lectures and methods are really helping me understand.

[torosalvajebcn]

Thanks from Spain, I've learn a lot, keep on the good work.

[ajsklar]

Dear Prof. T.S.Natarajan,

You have made wonderful videos, Thank You....

I think the one thing that is missing is an outline and a sample test to aid in

learning each lecture, If this has been done, could you please post a link.

Thank You Again...

[aunteekamila]

good lectures man!! very helpfull ;)

[videoparu]

thank you very much sir !! its very easy understand all the concepts you teach .... transistors, diodes etc... thanks a lot sir!!

[HALdon9000]

 Thank You!!!

[shelladavis]

Thank you so much. i know nothing about electronics and find it hard to understand. This has opned uo my eyes and am glimsing an understandig of the subject. Keep the vids comming LOL.

[v2kamals]

@naushadece ......blah blah..

English is just a language like hundreds in this world. The comment failed to understand that. Sensible people concentrate on knowledge not in how it is pronounced.

[naushadece]

Viewing this video for an Hour = 6 Months of my college study. Colleges are so bad these days. They just look them as a business.

[LikeBadT]

Thank you very much for the wonderful lesson. I am become much more interested in electronics. More power to you and to whoever initiated this educational topic. God bless you..

[minhaj178]

great sir you have give us the knowledge that can't get in whole year.thank u very much to all ur professors.

[kiransourav99]

thank you professor for your great job..

[kiransourav99]

thank you professor for this great job.. i think all the other countries in the world are getting to know about india's development in technology enhanced learning..

[aniket2662]

This has help many of us to learn the basics in a better way.

Thank You very much......

[obi1knube]

I have a little laboratory at home and I intend to follow all the 40 lectures of Prof. Natarajan that i found on youtube, the problem is that I tried the first experiment (OHM´s Law) I found out that the Carbon film fixed resistor don´t appear to consume current.

I applied 12 volts from the DC power supply, but the voltmeter was reading about 11,9volts, but the current meter was reading zero, I repeated with1k and 10k resistance but nothing changed. I am a bit desillusioned and i need help.

[tsniit]

@obi1knube Good ! Don't lose heart. Check whether the current meter is working well. Check whether you have wired on breadboard the circuit correctly. You will get over this problem. Try after sometime fresh.

All the best. Failure is the most important part of learning!

T S Natarajan

[keirfree]

Sircooots ?? wtf he should get to grips with English as a Language, before trying to tutor and uddders  ?? is this Others ?

[naushadece]

@keirfree Most of the English people do not know any language other than English. But we Indians know at least two languages dear. Please respect him as he is giving some invaluable information to you. You know 'Sircoots' are 'Circuits', right? Then translate yourself dude.

[keirfree]

@naushadece everyone has to learn, at some time, however there is No excuse for such diction

there is too much spoken, english language media, around, in the days before mass Tv or other means.

I have heard better, annunciation from a 6 year old indonesian,

[pkonduru]

Thank a lot Sir .

[exia78]

Great vids I am preparing for a msc in mechatronics and these are very helpful

Thank you.

[06J71A0415]

these lectures far better and incomparable with what i have learned through my lecturers in the college.Thank you sir.I am getting up early by 4.00 a.m. to have your lectures because i have unlimited browsing from 2.00 to 8.00 a.m .I AM ALWAYS IN DEBT OF ALL THOSE WHO BROUGHT UP NPTEL..THANKS A LOT .A GREAT JOB ACCOMPLISHED BY GREAT PEOPLE.

[Suket11]

Very Useful for me . We can get knowledge although we are not in IIT. Thanks

[simonesys3]

Thanks a lot.. sir

i always wanted to learn electronics, this videos are vary important for me to learn about electronics..

thanks a lot.

[81ovidel]

Thnx very much

[sinclairbrett]

sweet stuff as a guy now 45 doing electronics as a hoby and job from the age of 14 i think this is the best i have seen and come on guys its free

[Awale79]

very well done Professor! I have been studying electronics in an expensive london university for three years now, and I have not learnt half of what I have learned from your videos. very well done!

[ahsan116]

good video

[keithgarry]

Here's a complimentary course that does well to explain the things this teacher leaves out.

=2vHGYdepKLw

[3x0du5jsant]

@keithgarry ain't this course supposed to be BASIC ELECTRONICS ? what you are linking to is Engineering.

[harmlesone]

Thank you professor!

[tolsonw]

Thank you!

[aragornix]

You are a wonderful teacher! Thank you professor Natarajan!

[Krishnandb]

Thank You sir for this wonderful lecture of yours!

[kdp647]

thanks for online providing these coures making country better

[ElPolloGullefjun]

use a better microphone. or learn to talk in one.

[tonyshit80]

Thanks Indian......

[pipesgt]

Wonderful lectures. I studied Electronics in the British Army but that was a few years ago. I decided to re-learn and found your wonderful lectures. You do not assume any previous knowledge and teach us everything. Very well done indeed. I plan on viewing as many of these as I can.

Thanks again.

Jim

[MrStudent1978]

Your presentation style is very beautiful....very easy to grasp......thanks....

[iorixs]

thank you very much kind sir

[urstheruler1234]

Great information. Going to help me tons in my computer Electronics engineering classes. Thank you Prof. T.S.Natarajan

[760alien]

i thank you every time i visit- BIG THANKS

[riverab3]

Great education video.... thank you.. I can't way to go through the rest.

[MrPrabhakar3]

thanks sir for providing us this type of facility ,ii heartly thanks u .

[emjohnsn83]

to save time, you can go over this lecture faster but still get a good understanding of the concepts with MySpeed Enounce.

[chookvalve]

some one! -  no. someone - yes

[keirfree]

AurumenK I have nothing against free education, I do object though, to some one killing the English spoken language.

[keirfree]

Digital3DG I some how, don,t believe, that you too have not, set foot inside a bookstore, your spelling, and syntax is need correction.

[99FUN99]

Keirfree - some people will always be hypocritical and racist even when others who are the objects of the criticism are doing the world some good. Where the hell are your good works to show for your criticism? If you don't have any, then shut the &*2$ up.

[Digital3DG]

some of us come on youtube to watch people light thier farts, some people come online to actualy learned stuff. wich one are you. :), dont come on here dissing people for getting an education or presenting free education, go watch a watch a fart video

[Digital3DG]

3-4 to get a job

[AurumenK]

No keirfree I pay nothing for my knowledge, I sit and watch all these videos all day on you tube and gain some free knowledge.

[keggerous]

thank u so much for putting this on here for everyone and anyone interested in furthering their electronic ability like me!!

[seahawkers101]

This guy has like a whole college course on here, for free! Sweeet!

[keirfree]

AurumenK if your paying anything more than $4 dollars for this information, you are being ripped off, as all in this video can be read in a book, Electonics for beginners, this is so basic its scoolboy stuff

[Digital3DG]

aparently you havent been to a bookstore in the last 2 years as min cost of a computer programming book alone is 49.95 minumum. Thats barnes and nobel here in cali. Often colledges are a complete ripoff and nothing more than designed to get other people into debt as people go thinking a degree will get you somewhere and find out you need 3-4 years exp and knowing people in the industry and end up working at mcdonalds paying of thier 15,000$+ schoolbill

[interstitialofficial]

@Digital3DG Agreed. It doesn't take 4 years and 100,000 dollars to master anything. We're now hearing from people in the news who find themselves saddled with unreal debt and cruddy job prospects who are discovering to their dismay that they could have gotten the same education at a 2 year vocational school. My wife has a 4 year degree and she is now making what she made working as a receptionist for a temp agency! She's thinking of getting back to waitressing. What bull f---ing sh*t.

[jasondmcneill]

@Digital3DG Wow, ain't that the truth.

[phammcast]

@Digital3DG I completely AGREE!! I have been telling people this for years thinking I was the only one with my eyes open. I'm happy to see I was wrong!

[33rdPatriot]

@Digital3DG Agreed, The scam of higher education "school loans" has now rooked hundreds of thousands of dummies into owing (and paying interest on) over $1 TRILLION. Every day is learning, school. Do not get trapped into their system that beats you down, misteaches you in many cases, steals your life and spirit, and enslaves you.

[maninthesky]

Great work!! The videos made by him are very informative, though its a bit slow. i have prob with his voice volume - why is he recording it like he's lecturing in a theatre? Should speak slowly or calmly. Dont have the pitch up and down too much, some parts of the sentences have "booming" loudness, so that and the already strong accent together makes listening a bit difficult, in a long setting like this video lesson can be tiring.

remember : soothing and soft but clear.

[keirfree]

Why can he not pronounce Circuit correctly, it is NOT, Sir Cute, its more sirkit, OK OK English may be Not his, first language, or his 2nd, Annoying to listen to

[AurumenK]

This man offers you free knowledge that would easily cost you say 40000 dollars to learn in the us. for free. Try to be more aprecetive.

[lalakoh08]

Thank you Sir...

[sheikhmusaib123]

these indians teachers can't explain a bit need to get avideo from MIT or CIT professor

[tuin103]

Finally, he sets the meter function after connection to the circuit. That can destroy a meter for those who don't know.

I am critical because I have watched students blow up equipment and burn out circuits over these kinds of socially acceptable (but not technically acceptable) mistakes!

[Cessnacaptain]

The power supply was not on when he switched the meter function

[tuin103]

Using a digital multimeter makes it difficult to see the changes in measured values. He should have used an analog VOM for demonstration purposes or let the values settle before moving on.

Also, he inverts the meanings of the terms "by" and "into" which can cause confusion.

The power pie diagram is very useful but never explained; and Ohm's law is actually used before it is first introduced.

[Sshocker17]

omg im about to fall asleep watching this.

[LostLikeYou]

thats why i watch instructional videos... to fall asleep. they are perfect! also i may learn something too. double plus good!

[nangbutinang]

very good for beginners.. keep up the great work NPTEL!

[mstax]

This series, unlike "expert village," covers all the steps instead of skipping over things - assuming knowledge on the part of the student - so is more useful to beginners. Much more thorough and detailed. Recommended.

[EmilElectrics]

I really like this! Thanks! :)

[bhimbdrlama]

a lot of thanks for the lectures. It helps students to learn many things.

[oqla2000]

thanks and keep it up

[szxefrainingsz]

thanxs, thank you very much for bringing this courses, this was my dream when i used to work for t.v. then they couldn't see what i told them, then, then i was 22 years old. thanxs. Humans need science, with great philosophy.

[rake666]

First of all, really great videos, Im a total beginner, and everything is making sense. And yeah, this is a shit ton beter than retarded fucking expert village. really good job on all these videos. One comment, though, whoever is in charge of the Audio in the videos, maybe have them use some sort of compressor or limiter on the guys voice to even out the volume of his speech. The audio gets soft and loud alot. Shit, you guys could probaly just build a compressor to put on his voice. Cheers!

[shankotte]

thank you

[cheesycheesenugget]

WTF 55 minutes???!!!

[wing54]

And you expected an electronics LECTURE to be short?

[gianigianigiani]

This is great stuff - if 55 mins is too long for you - just look at the first 5 mins and go watch TV.

[gemineye100]

i am grateful for your lectures. they are high quality. i mean, ALL YOUR VIDEOS ARE AT LEAST 50 mins!!! way better than the 5 minute videos by expertvillage. you guys rule in this field, keep up the good work

[wing54]

expertvillage is a joke.

[Djony1987]

Thank you very much! Very useful material...it's helps me recollect some knowledge!

[puppeteye]

thank you very much prof!!!! you can explain a complex subject very clear!!! these videos are a great help for my own

work!

[thoughtt]

Thank you again I needed the knowledge and wondered where I'm do online research and you were right here.

[aquaman2027]

very informative!!! excellent presentation

[hotinghoting]

Thanks you very much professor

[krisimpossible]

secret learning is awesome!

[mochiam]

I have some problem to find the list of the lessons. Can someone help me?

[strawberryfields1982]

Did you have any luck finding the third part if so could you please let me know much appreciated

[mochiam]

search for electronics lecture 3

[strawberryfields1982]

Thank you very much!

[mochiam]

no problem. Good studies and enjoy guitar said by a jazz non professianal guitarist

[Savware]

This is a felicitation to the Wonders of Embracing the Digital Age, Kudos IIT truly a marvel to behold!

Prof. Many thanks! Let us together make the world a more knowledge wealthy environment!

I Love ur work, Keep it Up! God Bless!

[to2von]

thank you very much for the videos... it will help me a lot in my teaching profession..

[marke805]

I have to thank you so much for sharing these videos and knowledge. This has inspired me to change my major. Thanks Once again!!!

[chai2m]

thank you very much professor

[kirby300]

Very nice video,this is personally better than any other lectures i have attended to

electronics and ect.5 out of 5!

[richaprathap]

This is really amazing! It's one the best lectures I have attended.

Thank you very much professor and his team for altruistic efforts.

[deepsight]

Thanks for sharing!

[WarriorFootball]

realistically with these videos and some books plus internet acesses you can obtaine a comparable education in electrical engenering . say to that of a college student.

[sgnillat]

No wonder you produce some of the best students in the world, I am a grad student who has spent more than 100,000 dollars getting sub-par education, and these videos have given me more than I have ever gotten from my american institutions. Once again Thank you very much.

[Digitalbumpin]

You had to work in that shot against America huh

[gianigianigiani]

Actually the entire comment was a shot against America - he didn't really work it in.

[dontdewcriz]

Good video sir, always good to have education online for those unable to go to school. I personally go to school, but great nontheless.