EECE 251 - BJT Design of the Bias Circuit

Рет қаралды 123,785

12 жыл бұрын

Of course, once commercial values for Rc and Re are chosen, Vce is not 7.5V anymore. But it will be close enough ... how close? After finishing the design stage, analyse the resulting circuit, or run a simulation on CircuitMaker or ...

Пікірлер: 72

@rolinychupetin 10 жыл бұрын

So many thanks for your extremely kind words, Mr.Lubbock. With your permission, I may put it in my teaching dossier, for next year "quality assurance of teaching" review. Sincerely.

@bryan.conrad 10 жыл бұрын

by far the best explanation of bjt amp design I've found over the last two weeks of studying them. thank you so much for your great work!

@RedRaven326 5 ай бұрын

The best teacher on KZfaq, on any subject; period.

@rolinychupetin 5 ай бұрын

I love your enthusiasm and support.

@stevesteiner9472 5 жыл бұрын

First time I've ever heard anyone work out the design from the beginning, thank you!

@castimann 4 жыл бұрын

The only video I have seen that not only explain the bjt biasing theory, but also (and more important), how to set resistor values to a proper biasing given a specific Q-point.

@Raxarax 10 жыл бұрын

I hope you realize the impact you're having. I hope you realize you're teaching many more students than the ones you see. I hope you realize that some of us don't have good teachers or we just didn't understand the material when it was presented in class or our books are poor but we can come on here and watch your videos two, three or ten times until we understand. I hope you realize that what you are doing is greatly appreciated and is having an impact beyond your institution. Lubbock, TX

@atsul.7943 10 жыл бұрын

Mr Rolinychupetin. Your explanation of this tutorial was wonderful especially the voltage divider section. Keep up the good work. I am having an exam next week Tuesday and I believe this tutorial will do me a lot of good. GOD Bless you.

@TheGeorge1952 7 ай бұрын

The best explanation I have ever seen by far of the design of a simple common emitter circuit.

@fabiovsroque 10 жыл бұрын

Thank you Mr. Roliny Chupetin for all these alsome videos, saving lives here! For me the nicest thing about them is that I can have an overall understanding about one matter, with all the concepts together. IMO usually teatchers want the students to repeat an reapeat each step, what makes the students loose the overall concept. Best regards.

@arda9393 8 жыл бұрын

Your tutorial helped a ton in my introduction to electronics final. I can't thank you enough. Regards from Turkey

@rolinychupetin 8 жыл бұрын

Thank you M. Arda y, and thank you for including what country you are writing from. Turkey, no less. One of the cradles of the western civilization, and of the beginning of humankind perception of the electrical phenomena: Thales of Mileto.

@ricorico33 10 жыл бұрын

Man GOD bless you, you just teach me what my teacher couldn't.

@learnnow9598 Жыл бұрын

Finally someone♥️

@metiseh 11 жыл бұрын

I appreciate you making these videos... I am just sitting and watching the videos :) great they are...

@viniciusrosacota 8 жыл бұрын

Excellent class sir. BTW, you have a voice of a gentleman. Thank you!

@PelDaddy 8 жыл бұрын

Best explanation I have seen yet. Thanks.

@iamthesrm2 Жыл бұрын

KZfaq algorithm, I love you!

@mohimadvani6425 5 жыл бұрын

beautifully presented and explained. loved it.

@MagicGirlsOnly 6 жыл бұрын

Wow this is the best walk-through of this I'v seen!

@bryandowdey1779 8 жыл бұрын

A very clear and logical explanation. Thank you!

@popovlist 7 жыл бұрын

very very nice and neat explanation. Better than a book description. It is not a struggle anymore, its fun !

@JurekPrzezdziecki 7 жыл бұрын

Wow! the best explanation of the subject i've ever heard. Thanks for that. Thanks from Poland!

@rolinychupetin 7 жыл бұрын

Thank you Mr. Przezdziecki. You are only a few kilometers (miles) away.

@katrax7372 7 жыл бұрын

clear explanation..perfect voice..happy learning from an automation engineer college student in Greece..thank u sir!

@iplteddy 8 жыл бұрын

Huge thanks from from Norway, these videos has helped me immensely =)

@rolinychupetin 8 жыл бұрын

You are welcome, thank you for reporting where you're writing from.

@SamWalsh1 12 жыл бұрын

Your a great teacher, carry on I am learning loads!

@Furiouslyfunnyfizzix 12 жыл бұрын

Nice work - well done!

@adassumpcao 9 жыл бұрын

perfect explanation! thank you! :D

@akwasi7282 5 жыл бұрын

Thanks a million. This was very helpful.

@zez124696 10 жыл бұрын

Better than my teachers explanation. Cheers roliny

@truckrally 12 жыл бұрын

Great job, i appreciate it very much, ill see more off your videos!

@madagascar2203 8 жыл бұрын

Greeting from Indonesia, thank you very much you helped me so much... i studied Computer Engineering.

@panthachakraborty795 7 жыл бұрын

great work sir

@bEsTnOT2B 7 жыл бұрын

a very good explanation im designing a ce amplifier two stages and you really helped!! thanks a lot

@1235677890123567890 6 жыл бұрын

Nice explanation, very easy to understand. Big thanks from Malaysia

@rolinychupetin 6 жыл бұрын

Thank you, Mr. Heidy from Malaysia. Greeting from Canada.

@RTD553 8 жыл бұрын

A really nice and elegant explanation. Kind regards. Nick, UK. Physics and maths instructor.

@rolinychupetin 8 жыл бұрын

+Nick Allen Thank you.

@fjdarling 2 жыл бұрын

This was excellent instruction. Thank for our effort.

@rolinychupetin 2 жыл бұрын

Glad it was helpful!

@reynaldstfleur2973 3 жыл бұрын

you are one in a million. Thank you!

@rolinychupetin 3 жыл бұрын

I love your enthusiasm and support. Thanks.

@NandaPandeee 7 жыл бұрын

Wow thankyou so much from Australia !! :)

@rolinychupetin 7 жыл бұрын

Thank you for your encouragement and for reporting where you are writing from :)

@noid2tell Жыл бұрын

You are Sir, A Master Teacher! Thanks a lot!!

@rolinychupetin Жыл бұрын

Wow, thanks!

@sodbuster4411 7 ай бұрын

Very clear explanation.

@rolinychupetin 6 ай бұрын

Glad you think so!

@itzlagana 9 жыл бұрын

Thankyou from sydney australia

@rolinychupetin 9 жыл бұрын

Nice to hear from you, itzlagana from Sydney, Australia. You're welcome!

@ssttaarrTandT 12 жыл бұрын

U saved the day!!!!

@MA-km5rp 2 жыл бұрын

I didn't understand how you distribute the voltage across RC and RE please someone explain to me ):

@MrVoayer 8 жыл бұрын

Sound advice!

@MrWkirsten 12 жыл бұрын

Awesome video, but how do I determine the values if I have a predetermined voltage gain of 35?

@abderazakcherfi 3 жыл бұрын

Thank you so much

@rolinychupetin 3 жыл бұрын

You're most welcome

@kimsoohanmuturtlecrane5532 11 жыл бұрын

THANKS A LOT!!!!!

@ElectrogicsPH 6 жыл бұрын

Hi.very nice approximations.. Is it posssible to make R2 > R1? Why does the voltage Rc is 3/4 of the half and the voltage Re is 1/4? Is it possible to make them equal? VRc = BRe =7.5/2

@MrHmm-cv6gs 3 жыл бұрын

Thanking you sir

@rolinychupetin 3 жыл бұрын

You are welcome.

@Moha91196 8 жыл бұрын

i was lost ....Thank you from jordan

@rolinychupetin 8 жыл бұрын

You are most welcome, Mr. Naif. And thank you for including your country in your post. Sincerely.

@sediye 10 жыл бұрын

hero

@rolinychupetin 12 жыл бұрын

@truckrally Jag är glad att mina videor är bevakade i Sverige.

@martinmartinmartin2996 3 жыл бұрын

It is clear from your closing remarks that you have designed a transistor stage has 2 outputs: Ve: an IN-phase voltage output at the emitter Vc ; an OUT-of-phase voltage output at the collector. Vc ~(5.6/2.2)Ve , ACgain=x2.5 ...of course this circuit is NOT a typical AC amplifier due to the unbypassed emitter.

@rolinychupetin 3 жыл бұрын

Mr. Martin, thank you for your comments. In reality it is an AC amplifier. But we are looking at the DC bias. The emitter resistor bypass capacitor, and the two coupling capacitor (one to the previous stage and one with the following stage or perhaps the load) in a DC model are open circuits, that is why you don't see them there. Please remember that the impedance of a capacitor is Zc = -j/(wC). In DC, the impedance of each one of those three capacitors in infinity, an open circuit, so they vanish from the action. Again, thank you for the comment, because the same idea may have been lurking in the minds of other of my very dear viewers/followers/fans/students.