Electrical Engineering: Ch 3: Circuit Analysis (28 of 37) Current Graph for NPN BJT Transistor

[@dujemarasovic5761]

You explained it better in 7 minutes than 2 of my teachers didn't in 5 months

[@drstrangelove09]

I finally see what is truly meant by saturation region!!!! Thank you!!!!

[@dulmin_]

This comment was the reason I watched the full video, I too had the same problem! Thanks to both of you!! 😇👍👍💓👌

[@kamelfakih8340]

me too ! finally someone actually explains it

[@88NA]

me too

[@Inamulhaq-t7y]

Me too

[@timothynguyen4305]

You have been a blessing ever since I took high school physics. Now, you're helping me with my 3rd year EE courses. Thanks so much for all that you do!

[@MichelvanBiezen]

Happy to help!

[@magicflour]

Third year? Damn fuck I'm a sophomore and I have to learn this alr 😭

[@chitra___]

@@magicflour Freshman here, y'all are behind :)

[@motsekikhetholloelectronic293]

i see the reason why you were still working even on the Chrismas day thank you so much

[@collinsmith7572]

This....... is......... so........ clear......... No sarcasm. My teacher cannot teach this nearly as clear as you have just now. Thank you so much.

[@tedelctro6849]

you are the best teacher the world

[@kolibri5861]

i agree my professor just reads on the projector what the unknown says im like yeah yeah ugh wait wtf is that ugh whatever

[@lovepeacekilluminati9034]

U hv the goodest english on da wrld

[@siran804]

The only video where saturation region is explained in an understandable manner. Thank you sir🙏

[@MichelvanBiezen]

You are welcome. Glad you found our videos.

[@coconutinacap]

I must have watched 20 other videos before finding this one, trying to understand the saturation region. I finally get it now, thank you so much!

[@MichelvanBiezen]

Glad you found our videos. (There are over 9000 more on this channel).

[@solewalk]

Excellent explanation of saturation region. Have not seen a better explanation than this.

[@cosmosben6726]

Thank you, teacher! I've watched several videos, and your explanation helps me understand how to read this graph.

[@khaledsa1ah]

I've an exam tomorrow and your videos saved me, thanks a lot 🙏

[@MichelvanBiezen]

Good luck on your exam tomorrow1

[@FunkToFunkiest]

The Ic vs Vce curve explained, thank you so much!! Following your explanation with Vce=0.5 V and Ib= 500 uA, Ic= 20 mA because it is saturated. From this point we can increase Vce until 1 V and obtain the maxim Ic with Ib=500 uA for a saturated state Ic=50 mA. Increasing still some Vce=3 V we will still get around Ic=50 mA, above the saturation region Ic basically depends on Ib (b·Ib) and not on Vce.

[@MichelvanBiezen]

Good information. Thanks. 🙂

[@sheiv9915]

Best video explaining output characteristics of BJT ever made, thank you

[@MichelvanBiezen]

Thank you. Glad you found our videos. 🙂

[@sheiv9915]

@@MichelvanBiezen my pleasure, you give great lectures

[@markfinn825]

For some reason I forgot what I read and figured more base current caused higher emitter to collector voltage. But your video cleared my head. Thank you.

[@fernandoluis53]

Thank you for ur excellent videos professor. My professor is brilliant but his teaching skills arent great. Your videos made me understand all equation for npn bjt and understand what the graphs mean which textbooks overcomplicate by using sophisticated math and language.

[@pdcx]

+yashfernandojain I second this

[@InferiorPhilly]

The one thing not mentioned is that when the collector current and base current are at a higher state the collector current increases more drastically as the VCE increases. This is typically when passed what I've gathered is the DC load line.

[@peterdavid5928]

I wish I found your videos a lot sooner. Thank you and great explanation!

[@MichelvanBiezen]

At least you found them. Glad you did.

[@franklin8184]

A very clear and simple to understand explanation !!! Thank you, Sir.

[@MichelvanBiezen]

You are welcome!

[@naderhumood]

Deligintly great job Sir.... Im sending u a sluate from Bahrain 🇧🇭✌️

[@robertburbulea8503]

My poor 70 year old teacher was really not able to explain this. Maybe in his younger days. Anyway thank you for this series, you will help me with a very hard exam

[@umatth6180]

finally find a video explain well on saturation region of this graph...

[@MichelvanBiezen]

Glad you found us! 🙂

[@Reza1984_]

Thank you good sir, I finally understood the saturation region

[@MichelvanBiezen]

Glad it helped

[@abdallahamouda6633]

really good video, direct to the point without that much of theory

[@kulper]

So i needed to know at some point when Vce value reaches Vcc it cannot go beyond that. Is that mentioned here?

[@jimmytorreon9615]

Many other videos discussing this topic .but you only made me understand this

[@MichelvanBiezen]

Glad it made sense to you. Yes, this can be a tricky graph to understand. 🙂

[@jimmytorreon9615]

@@MichelvanBiezen thanks to you sir.

[@michaelcostello6991]

Best explanation on KZbin. Thank you

[@MichelvanBiezen]

Glad you think so!

[@funnydance889]

Auspicious explanation ❤

[@ahmadmehrez3486]

thanks a lot , very useful , can i ask for to clarify how betta can be more than 100 , what are the factors that determine the value of betta for a transistor ? why the value of betta varies from an transistor to another ? , thanks in advance

[@jorgeluispereiradasilva5123]

Thank you. Good explanation. This coordinate grafh is not easy.

[@MichelvanBiezen]

Glad it helped

[@uzairahmed4483]

This guy needs a nobel prize

[@usboys600]

At 1:25 you say "the greater the voltage at the collector the greater the current"... I believe you wanted to say the opposit... As MAX voltage at the colector is when there is ZERO current!!! Let me know if I am not getting it? Thanks

[@ahyungrocks5509]

Excellent teacher. Thank you.

[@MichelvanBiezen]

You are welcome!

[@waynegram8907]

MICHEL VAN, The Voltage Drop Across the transistors Collector to Emitter is what determines the minimum Ib current and Maximum Ib current?

[@MichelvanBiezen]

The base current is what controls the emitter current.

[@Pseudophysics1.5]

Actual reason behind saturation region.. thank you sir

[@snnskr7277]

Sir, I couldn't find any Mosfet transistor videos on your channel.vDo you consider to do some in future?

[@MichelvanBiezen]

We do have plans, but not in the near future. We are covering a number of other topics at this moment.

[@dojithamirihagalla2539]

Excellent.....

[@boody7665]

Sir , you made it easy . Thank you

[@Nocturnes1984]

I know it must be odd to ask but I'm looking at the datasheet of the BD 139 NPN transistor. They mention : Collector-emitter saturation voltage NPN IC = 0.5 A, IB = 0.05 A Max. 0.5 V I see the max current on the collector Ic = 1.5A. Am I looking at it the right way? Does this mean that if you give 0.05A on the base you get 0.5A on the collector so if you give 0.1A (Ib) you get 1A (Ic) and you can put 0.15A on the base to get the max. 1.5A on the collector?

[@adamdelarozza1985]

The higher the Vce is, the more bandwidth the transistor has to operate/switch. A lower collector emitter voltage will reach Vce saturation sooner. Its Interesting to me that beta increase in electrons is due to the more doping of the emitter side, making this a true electron amplifier.

[@MichelvanBiezen]

Thanks for the input.

[@michaelcostello6991]

What determines Vce at saturation. Is it a property of the transistor ?

[@brandonkam491]

Good explanations, thank you!

[@MichelvanBiezen]

You are welcome!

[@amitkumarsingh5822]

Very good explanation

[@MichelvanBiezen]

Thank you. Glad you liked it. 🙂

[@ayoubbouzekouk199]

FINALY, BIG THANKS MENTOR❤️👏

[@MichelvanBiezen]

Thank you!

[@Ronyllsky]

You make my teacher look really bad awsome presentation !!!!

[@zS1L3NT]

my exam is tomorrow and this man saved my ass. THANK YOU SO MUCH!!!

[@vaughnmonkey]

mine is in 30 minutes lol I'm glad his videos are short

[@KakarotM99]

pure gold

[@Backflipmarine]

Just a heads up, this is the last video lecture on your website for the chapter, had to go back to youtube to continue learning.

[@MichelvanBiezen]

Thank you. We have to update the web site.

[@Backflipmarine]

@@MichelvanBiezen I have 3 of your courses going at the moment. Thanks for making everything so clear :)

[@radwas76]

😀Great job!

[@MichelvanBiezen]

Thanks! 😄

[@yassinbenhaj1669]

Very well explained thank you

[@MichelvanBiezen]

Glad it was helpful! 🙂

[@mrblazingpie]

Thank you man this was extremely helpful

[@MichelvanBiezen]

Glad to hear it! 🙂

[@bonadio60]

You are a great teacher, thanks!!!

[@MichelvanBiezen]

Thank you! 😃

[@wariskn7096]

How can we increase the collector voltage it is decided by the base current and the RL right?. I didn't realy got the picture with the voltage variations..

[@sanjushekhawat6446]

Too good

[@righteousness185]

great lecture, thanks alot!

[@kapser2210]

This was extremely helpful, thanks a lot 😄

[@adoion2421]

thanks a lot. ypu really helped me a lot

[@techmakerandhacker7867]

thank you sir very much this is a life saver video

[@MichelvanBiezen]

Glad it helped

[@techmakerandhacker7867]

@@MichelvanBiezen thanks sir once again

[@motex_gaming_1667]

well explained..

[@MichelvanBiezen]

Glad you liked it.

[@aodoemela]

Anyone know what the equation is for the curves. I have something like a*exp(VBE/VT)-b*exp(VBC/VT) which gives me a somewhat similar graph that can be fitted to my data

[@aodoemela]

Ended up finding the equations. But I dont get why they dont just teach it to people instead of all these approximations and half assed explanations

[@Inamulhaq-t7y]

Very helpful

[@MichelvanBiezen]

Glad you think so!

[@alaveroA]

Wow, well said🧐!

[@salikmallick8036]

Professor where are your videos on determining the H-Parameters and small signal equivalent?

[@MichelvanBiezen]

We still have to cover a lot of topics, including those.

[@curtiscranford8820]

How would you calculate the voltages if Vo=4V, Vbe=0.7V, Betha=150, Vcc=18V, Rb=10Kohms, Rc=1Kohms,Re=500ohms?

[@soumyaranjansahoo3512]

Dear sir please add some video s on Electronics engineering/semiconductor physics and device

[@wariskn7096]

What is the parameter you want to find?. I think your question itself is confusing. From your perspective I didn't get from where you consider the Vo. If you are doing the common emitter config. The current at emitter is 3.3/500 which is 6.6ma. As this will be the current flowing through collector by neglecting the base current let's say it is 6.2ma. if thats the current at the collector, then the voltage across Vc across Rc is 6.2ma*1000 which is 6.2v.That means the Vo is not 4v it is 18 - 6.2 which is 11.8V. If the Ve across Re is 3.3v then 11.8- 3.3V is 8.5v across the Vce. I hope I answer the question with my perspective...

[@zgbzbiot1353]

Thank you so much ❤️

[@MichelvanBiezen]

You’re welcome 😊 Glad you found our videos!

[@jayanthmahurkar376]

Sir, I'm unable to find to next video episodes of this topic...it would be very helpful if you can post the link of the succeeding episodes..

[@MichelvanBiezen]

+jayanth mahurkar They are still in work. More will be uploaded in the near future.

[@giannibarbagianni8112]

What if I apply a negative voltage?

[@lovepeacekilluminati9034]

It is not the forward bias mode anymore, it is another working which has a little Amplifying function only

[@mpume.dzwane9213]

Well said Sir. Thanks a lot .

[@MichelvanBiezen]

You're welcome!

[@UbiAbi]

I love you man

[@bad63r31]

Very nice explanation. +1

[@paugasolina5048]

you are awesome

[@chriskiesler5892]

You are a god amongst men

[@MichelvanBiezen]

No No. Just a simple man blessed to be able to do this with a wonderful wife doing a bulk of the work behind the scenes.

[@chriskiesler5892]

BLASPHEMY!!! ;) Seriously though, thanks for everything you both do! I'm reviewing for the Fundamentals of Engineering test and this was extremely helpful. I should have skipped the college lectures and just watched your videos.

[@Maybe.019]

Thank you

[@MichelvanBiezen]

You're welcome

[@Nocturnes1984]

Mr. Michel, a question about the chart. I was trying to compare to the transistors I have and I noticed that the Vce/Ic graphs they use are different. The line of Ib is drawn differently. Example: BD139 www.st.com/content/ccc/resource/technical/document/datasheet/25/1f/cf/0d/03/ad/4e/06/CD00001225.pdf/files/CD00001225.pdf/jcr:content/translations/en.CD00001225.pdf Where can I find the details lik you explained it in your video so nicely?

[@omaromsi1010]

Thank you very much

[@ritesha8050]

thanks sir

[@MichelvanBiezen]

You are welcome. Glad it was helpful. 🙂

[@joelmanuel913]

sir. thank you so much !!

[@MichelvanBiezen]

Most welcome!

[@maladevani3775]

Super

[@MichelvanBiezen]

Thanks Glad you liked it. 🙂

[@Nocturnes1984]

Small question: I realize your from the United States but your name sounds realy dutch to me...any relations to the European continent?

[@MichelvanBiezen]

I was born and raised in Belgium (near Antwerpen)

[@Nocturnes1984]

Bedankt voor je videos zou ik zeggen. Ik moet eerlijk genoeg zeggen dat je geen Antwerps accent hebt....

[@MichelvanBiezen]

over de jaren heb ik het kunnen verbergen

[@markfinn825]

Not knowing ce meant the voltage applied to the collector and not the voltage across the transistor was what caused my confusion

[@kaybhee6]

so,,, dc gain huh...

[@whatever3041]

You are not providing any reason for why the curve looks like that, you are essentially just explaining what the curve looks like and what one needs to remember, but WHY DOES THE CURVE LOOK LIKE THAT?

[@AKstrongman]

In saturation the Ic rises according to the applied electric field that draws electrons from the reversed biased CBJ thus as the IB increases that means the BEJ becomes more forward biased and there are a lot of injected electrons to the Emitter side and this needs enough electric field(collector voltage) to apply across the CBJ thus as there is an increment in IB, there is an increment in IE leading to increment in IC and the increment will be more proper as there is an enough voltage across the CB diode if there is insufficient voltage the diode will lose its capablity to draw enough electrons and will lose its proportionality with IB which is beata and the gain will be less than beata. When CBJ reverse biased there will be enough E to draws electron but because early effect (base width modulation) the recombination region in p side will be less and this will make Ib decrease little bit to increase the Ic and as well as the gradient concentration will increase leading to high I emitter which means increasing in Ic as VCE increase ! In cutoff both the diode will be off no current will pass .^-^ I hope you understand

[@alexandruchiriac3009]

Come on teacher give us a real example like 2n3904 general purpose transistor in class A amplifier with real voltage , real collector current ... aproximated beta .... bla bla

[@MichelvanBiezen]

There will always be a difference between the theoretical examples and the real circuits. But first we have to learn the principles and then we learn how to adjust the circuits for the limitations posed by the circuitry.

[@paulnavarro8795]

[@m.abubakar2867]

EXTREMELY poor video.

[@danielchen6413]

L

[@alexandruchiriac3009]

This is a tipical university course which has many assumptions... nothing new, nothing entertainment,nothing to learn... assumptions and assumptions like the collector current is this and that ... in reality let's make it a fair share, those assumptions can make you think wrong... to much abstract and not about the transistor model itself; about the the way you are introduced to this model so : thumbs down

[@MichelvanBiezen]

There will always be a difference between the theoretical examples and the real circuits. But first we have to learn the principles and then we learn how to adjust the circuits for the limitations posed by the circuitry.