Starter Guide to BJT Transistors (ElectroBOOM101

Starter Guide to BJT Transistors (ElectroBOOM101 - 011)

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By: Mehdi Sadaghdar

КОМЕНТАРІ: 1 700

@ElectroBOOM Рік тому

And while we are at it, GO IRANIAN PEOPLE GO! Best of luck in your efforts to take your rights and your lives back! #MahsaAmini

@mehdikho Рік тому

مهتی کارت درسته

@birgenair301 Рік тому

Yes

@enterprisesoftwarearchitect Рік тому

King of pop ha ha ha! I love transistors Electroboom!

@mickeyfilmer5551 Рік тому

Absolutely. Those women are so Brave. This is the 21st Century- not the 5th. Good for them.

@PetraKann Рік тому

Rights?

@SultanGamer124_GD Рік тому

I subscribed to electroBoom to see him blow things up but now I’m actually learning something from him.

@playingweirdo4720 Рік тому

Ikr!! I felt the same.. tbh I'm binge watching Electroboom videos nowadays

@Jamie-st6of Рік тому

you've been learning the whole time! the explosions are a disguise for knowledge

@dogs-and-destruction-channel Рік тому

The explosions are all part of the learning process, it teaches you what NOT to do or how to make fireworks with electricity lol😆.

@EvanShechter Рік тому

That needs to be on a shirt

@pedropascalspp Рік тому

I know I’m starting to panic a little I’m becoming smart

@ripfire4 Рік тому

This is a better lesson than I got back in my EE class in the 90s. I learned more in 10 min with Mehdi than an entire semester of hearing about the "glory days" of the professor I had.

@BariumCobaltNitrog3n Рік тому

Yes he's very good at explaining things to slow learners so they walk away feeling like they learned something. But tomorrow...

@thewhitedragon4184 Рік тому

Honestly I don't see it. He cut out a lot of information in the video to make it shorter but at the same time he kinda explained transistors as a switch but jump to making amps which drive transistors differently

@lwo7736 6 місяців тому

I bet, your teacher once told you a 20 minute story about his life to try and relate to the class, and you spent the rest of this "entire semester" messing around, ignoring the teacher and just generally being a useless learner. So to save yourself the feeling of regret, you've concocted this "glory days" story to make yourself feel better. It's the same with all of these "I wish my teacher in school was like this guy" comments on every single science influencer video out there.

@ripfire4 6 місяців тому

@@lwo7736 Messing around? This isn't high school. Who the hell wastes money at a university?

@tunkunrunk 5 місяців тому

you learned in less than 10 min because of your EE class back in the 90's . if you were a beginner you wouldn't had understood that fast with Medhi

@stardust857 Рік тому

EE undergrad here, thanks for all of your videos, it's really helpful for understanding the concepts in deep.

@KirbzYyY Рік тому

After failing my analogue circuits class (which is BJTs, MOSFETs, OP amps and filters), this 14min video explained BJT better to me than the prof did. I knew beforehand how to calculate the base and collector current, and all the other things we needed, but I now *understand* a lot more.

@iFATE91 Рік тому

I'm curious what type of transistors are these? Common base/collector/emitter

@Inquisite1031 5 місяців тому

that's what happens when u are more of a visual learner, college professors often rely too much on maths and text, and not show diagrams too much to help students visualize things, and they can be hard to follow I still remember my class on Multi Variable Calculus where my friends struggled so hard to visualize the functions and the partial derivatives, when a a simple graph plotted using a computer would have fixed that problem easily.

@dennismunyaka6537 5 місяців тому

@@Inquisite1031 haha yes watching this has helped me to. its currently 7:00 am and I have an exam on this topic at 2:00 pm. will updateafter exam. but it did indeed help understand how it works.

@MitchellClark Рік тому

This comes at the perfect time. My electronics class is going over these in a few weeks. Thanks Mehdi!

@abdullahalmasri612 Рік тому

bad timing for me as i just finished my electronics and electronics lab haha, at least i have a good overview now

@spectra5029 Рік тому

It was also not the best time, I just had my electronics exam xD

@veselinmanev8895 Рік тому

Who has BJT's at uni anymore?

@arwlyx Рік тому

Same, we're on FETs now c:

@matthewduphily5129 Рік тому

I started them the day he posted this, so this is perfect

@trapper1211 Рік тому

the whole 2:09 section was genius, I love it The simplified graphics have always been very confusing to me, only onceI saw the real cross section of a transistor I finally understood how they work

@sudocheese Рік тому

I was totally panicing at first.

@robinsparrow1618 Рік тому

you remembered? >:0

@CD4017BE Рік тому

The simplified transistor schematics makes more sense if you view the two back to back diodes as optically coupled LEDs / photo-diodes. So every every electron that crosses the Base-Emitter diode emits a photon. These photons travel over to the Base-Emitter diode to get absorbed and each allow one electron to cross its PN-junction as reverse current. If you take this model, then the current amplification factor of the transistor inversely depends on the percentage of photons that get lost during the process (about 0.5% for a typical hfe of 200).

@NathanSweet Рік тому

@@CD4017BE "These photons travel over to the Base-Emitter" did you mean Base-Collector in this sentence?

@lennonmclean Рік тому

DONT LOOK AT THE CROSS SECTION

@berniefranks4876 Рік тому

I have never been so fascinated with a subject I knew nothing about. I wish I had a teacher like you when I was young Thank you!!

@mikewillmitch3579 Рік тому

I just want to thank you for making these. It's been 11 years since I got my EE degree and these are nice refreshers.

@AmoghA Рік тому

Whenever Mehdi mentions a capacitor, I know there is going to be an explosion.

@that1electrician Рік тому

That's what we're all here for isn't it?

@jurijavsenak Рік тому

😝

@flaps805 Рік тому

Pronounced 'meat d eye'

@official-obama Рік тому

@@flaps805 no

@playingweirdo4720 Рік тому

But this video has no explosions🥺

@masonhammers9497 Рік тому

Currently in a coarse largely focused on MOSFETs and it was just lovely learning that the BJT's equivalent of a MOSFET's saturation region is called it's active region. Then to double down on the confusion, they called the linear/triode region of a MOSFET a BJT's saturation region. Ahhh I love electrical engineering.

@kensmith5694 Рік тому

IGBTs make it even more confusing. Isolated Gate Bipolar Transistors are really like a MOSFET driving a bipolar of the opposite gender. They, however tend not to be labeled that way.

@agalah408 Рік тому

Sounds like it was a coarse course.

@beewyka819 Рік тому

god that was a headache when i first learned about this shit

@Zaros262 Рік тому

Lol yeah. Personally, I think it's always clear to refer to the triode/saturation region as "linear" for both types and say "saturation"/"active" for FET/BJT Context helps a lot, though. Not sure I've ever encountered a situation where the term "saturation" actually caused ambiguity

@monad_tcp Рік тому

hum, so that's why my mosfet exploded when I tried to use it as a BJT the other day, lol

@jonlukewest4633 Рік тому

This is exactly the BJT overview I needed. Thank you

@unclesam6168 Рік тому

Awesome vid Mehdi, please never be discouraged by lower view counts on your more educational videos as they are so high quality, and the view count should not matter to you as you are clearly so passionate about educating people about electronics in your own deranged way :P

@uvtube2008 Рік тому

To true Electrical engineers, his videos are like music from heaven. I regularly recommend his videos to practicing engineers and technicians to get things done much better than they would otherwise.

@margaritav2024 Рік тому

This video couldn't be timed more perfectly! I have an exam on transistors coming up in a week. Thank you so so much you make everything so much easier

@joelsmith5624 Рік тому

Mehdi! You explained this better than any of my Engineering professors throughout me entire degree. I appreciate the refresher 🙌🏻

@AndrienQ Рік тому

I've been playing guitar for over 20 years, and this is got into amp design that I'd never dreamed of; amazing video!

@davec8385 Рік тому

These videos continue to be fantastic for concisely teaching electrical circuits! Thank you for making them, I hope you have a fantastic rest of your day

@prvashisht Рік тому

OMG! How did you read my mind?? I just started looking for videos to understand BJTs and MOSFETs today and here you are! Thank you so much for this.

@elliethebat4761 Рік тому

as an electrical engineer, its fun watching you explain this stuff in a different way to how I learned it

@tekvax01 Рік тому

Excellent demo Mehdi! I haven't thought about this stuff for many years after college, so it is always a welcome learning experience to refresh ones knowledge.

@LordHonkInc Рік тому

Honestly, yes, this series (along with your other videos) has helped me tremendously in getting comfortable with small-scale electronics repairs. I'm still comfortably scared of high voltage stuff, but yeah, you've saved a lot of remotes, loudspeakers and the like from getting thrown out when it was easy to fix them; even hand-soldered my own keyboard after finally understanding how diodes work. So thank you a ton for all this free knowledge :)

@cosmefulanito5933 Рік тому

Brilliant 10 minute video that explains the basics. Excellently explained. Congratulations. I would have loved to have you as a teacher at school.

@idko5452 Рік тому

I'm working with electronics like 16 years and nobody, like nobody (school, forums and old repair men) did that great job explaning it in this detail to understand it properly like You, from this video everybody should understand fundamentals of transistors, amazing video great job Mhedi 💪

@erinc1376 Рік тому

I want to thank you because your videos are what peaked my interest in all things electrical, and now I’m pursuing a successful career as an electrician and I’m the happiest I’ve ever been

@stargazer7644 Рік тому

It piqued your interest. Protect your back and don't electrocute yourself.

@alessandrobaca8124 Рік тому

I really liked it! Please continue, i would appreaciate a series about audio amplifiers. I would like to try out different circuit architectures on various levels of complexity. Awesome channel, as always. Let's also throw in MOSFETs and IGBTs.

@agalah408 Рік тому

I'm not sure Mehdi should be teaching transistor theory. I think he's biased.

@GeorgeFoot Рік тому

Brilliantly entertaining as always! I loved the inverted PNP graph, and laughed out loud when I saw the burn marks on the breadboard!

@davidtruelove5022 Рік тому

Thank you! I recently had an issue with a pnp bjt that was supposed to a npn I just flipped it and everything started to work. Thanks for the 101 series. These are great refreshers even for experienced technicians

@Soloist1983 Рік тому

This made a ton of sense! Oddly, I now see the similarities between how vacuum tubes and transistors work

@PetraKann Рік тому

Fleming patented the thermionic diode, the first practical vacuum tube electronic device, in Britain in 1904.

@triffid0hunter Рік тому

@@PetraKann And Lilienfeld patented (US 1745175) the field effect transistor in 1925 - funny to think there's barely 20 years between the invention of the vacuum tube and the transistor!

@Soloist1983 Рік тому

@@triffid0hunter Wow, and it took us that long to adopt transistors?

@ShaunieDale Рік тому

@@Soloist1983 not that long to adopt, Just that long to make them work!

@SomeDudeInBaltimore Рік тому

@@Soloist1983 Just because the idea was patented doesn't mean there was a working one yet. They knew the potential of semiconductors from theories, but they spent that long making silicon and germanium sandwiches in a thousand different ways until the guys at Bell Labs finally did it. Kinda like how we know fusion works but don't have a commercial fusion power plant yet.

@TheSoldercreeper Рік тому

I wish I had both the diodes and transistors videos back then at my fourh semester. Would've helped me a lot

@UnicornAdvisory Рік тому

Thanks brother. Always putting out the best content since I found you in 2017. Cheers from Canada

@AsBi1 Рік тому

I really love your videos. They are the simplest yet very much efficient in teaching electronics. trust me I would have never understood the phenomenon of these things from reading a book for 10 days that I could learn just from watching your videos. your way of starting out with basics, making minds hungry for answers and than answering those questions by providing the good visual concepts of the subject is amazing.

@Gideon_Judges6 Рік тому

I appreciate the green screen work with the whiteboard. It was very cool production!

@aditya.21 Рік тому

Hey Mehdi ! Love your videos and your style of explaining things

@GDE23 Рік тому

Best way I have ever heard this explained. I remember in school being very confused by these concepts. You described it very simply.

@SidewinderINC Рік тому

Using transistors in guitar effects pedals, and whilst I am following other circuit designs I'm needing to make mods, this is a really helpful video for starting the journey! thank you!

@GeekRedux Рік тому

A better explanation of basic meanings and functions in 14 minutes than I got in 3 lectures of my EE program.

@F900_Gaming Рік тому

Mehdi, I was your your 962nd subscriber, I have never left you or your videos, they've educated me so much and I thank you for that 👍

@jedithusnbixby2108 Рік тому

When this account was made a year ago...

@digitalchaos1980 Рік тому

@@jedithusnbixby2108 I'd wager they probably meant 962,000th subscriber. Sounds more plausible.

@F900_Gaming Рік тому

@@jedithusnbixby2108 Bro, not on this account, I have a main account that was the 962nd subscriber of electroboom. Sorry for any misunderstanding

@halvorhansen Рік тому

This is super relevant to my studies right now. Thank you for these great videos

@khinoo4821 Рік тому

Thank you, Your explanation is not only very informative but also very fun to watch

@bmo14lax Рік тому

Thank you for teaching electronics to everyone!

@davefaust7317 Рік тому

I earned an electronic engineering degree in '96 but the section on transistors was taught by a guy who was unfortunately on his way out so none of us in that particular class quite got it. This has been the best explanation I've heard since.

@Katia413 18 днів тому

Mehdi, your videos have been the key to helping me understanding concepts I thought I would never wrap my head around. It has unlocked so many doors on my career path as a controls engineer. I’m now delving into electronics and embedded systems, and I couldn’t be more excited! Thank you x1000 for your work on this platform, providing such a witty and engaging approach to what is normally very dry learning. You rule!

@jcsolt8323 4 місяці тому

I have been watching videos on transistors for a couple days now. This is by far the best one! Thanks electroboom!

@khushvendrabissa2031 Рік тому

The diode equivalent of the NPN transistor at 1:52 is incorrect I guess.... The bottom diode should be reversed to bring the n side down and to make it "NPN" BTW nice video as always sir Mehdi ☺

@user-yb4ok1xd1p 7 місяців тому

finally a proof that i was not alone

@BayEmirkiYT Рік тому

I'm waiting for "how mosfet works"...

@baharam98 Рік тому

What a joy to watch Mehdi make learning easy to understand through his balance of fun and info. BRILLIANT! Much love to everyone who seeks total freedom from all authorities except LOVE.

@joshuacrippen9513 Рік тому

I've seen the explosion videos so many times and decided to look you up. You're explanations are so much better than my professors!!!

@6754bettkitty Рік тому

0:10 Capacitor: the king of "pop" 🤣

@mrknownvalue1882 Рік тому

I want to study electrical engineering in UG , Sir your videos are really helpfull 🙏🏻

@lostguy362 Рік тому

Jee ?

@CaptainCandycorn Рік тому

I just had my first day of linear circuits class (MAE40) at university and this came up. Very excited to learn a new field of material!

@rivergranniss3740 Рік тому

Perfect timing! The module on BJT transistors in my circuits class started this week at university!

@davidpanic Рік тому

That was a very good explanation, good job Mehdi!

@iamboredfor2months Рік тому

THE VIDEO JUST RELEASED-

@varshithgamer90 Рік тому

How the fuck

@agl0d16 Рік тому

Wait hol up-is this cuz of patreon?

@pyroteamfrankenjunior Рік тому

@@iamboredfor2months yes and the comment is a day old

@your_average_cultured_dude Рік тому

@@iamboredfor2months maybe the patreon supporters get a link to the unlisted video a day earlier than everyone else

@xTerminatorAndy Рік тому

Well done Mehdi. if a bjt is like 2 diodes, can you make a FULL BRIDGE RECTIFIER with BJT's if you don't have a bridge or diodes handy?

@ElectroBOOM Рік тому

Hehe! Interesting thought! They are not exactly equivalent in behavior, maybe I should try it. I would need to pair an npn and a pnp

@JustPyroYT Рік тому

@@ElectroBOOM i would like to see that! :D

@jhoughjr1 Рік тому

@@ElectroBOOM the question is will it be an amplifier or an oscillator? Transistors like tow be fluid like that the more of them there are

@windowsxpmemesandstufflol Рік тому

@@ElectroBOOM ooo

@subhadepdas Рік тому

@@ElectroBOOM sir please make an video on freewheeling diode

@jackburnett4430 6 місяців тому

I'm watching you after a study hiatus to try and get back up to speed and damn I wish my lecturers were this engaging! I love the way you jumped straight into setting up an amp before just info dumping about gain and all the different types

@maxketschik5625 Рік тому

The best "crash course" style video about BJTs on UKposts. Wish I had this at my exam...

@johnslugger Рік тому

*Please show how to use an IGBT for high amperage power switching like BIG Battery to AC power inverters.*

@Indrakusuma_a Рік тому

Wait, you can use a speaker as a microphone? o.0 After all these years following this channel, I still don't understand a thing about electricity, yet I just keep coming back even rewatching the whole videos. But hey, at least I remember a name or two related electricity now ;D

@hugoromeyn4582 Рік тому

Yes. And you can use a microphone as a tiny speaker. Just like you can use a motor as a dynamo. Does it work perfectly? No, but it works.

@igorbondarev5226 11 днів тому

This is the best video about BJT's out there. Other authors omit real life things such as messy datasheets and hFE being not a constant. Respect

@joelstyer5792 Рік тому

This is the most well put together and practical BJT video I have ever seen. Well done! I like how you pointed out in that most applications, we only want to know how to use the device, not every intricate detail on how it works. You created an excellent balance on those two items. But what I remember most is that capacitors are the king of pop. Hilarious.

@devilette Рік тому

Wow this couldn't have come at a better time! I'm currently being held at gunpoint being forced to describe the operation of BJT transistors! Thanks Mehdi!

@PlasmaChannel Рік тому

Haha oh lordy, i've never been so willing to be slapped. Good video Mehdi!

@bleach_drink_me Рік тому

I learned about these when i started to tinker with car amp repair years ago. I spent so many hours reading about transistors and researching how class A/B and D amps work.

@magicalframe9441 Рік тому

I'm currently taking basic electrical for my A&P license and this helped a ton.

@fliper975 Рік тому

I've already watched this 3 times. No matter how many times my tiny brain gets an explanation on transistors I still think it's just magic.

@tlatitude8586 Рік тому

I slowed it down to .75 speed for a viewing and also recreated the drawings. I think it is helping a lot with the understanding, but I haven't finished yet.

@fliper975 Рік тому

@@tlatitude8586 I understand what they do, and how to use them. I just don't (fully) understand HOW they actually work. That diagram he threw up was actually something I haven't ever seen and made the internal layout make more sense

@fliper975 Рік тому

@@tlatitude8586 the understanding will come for both of us at some point. This is a great video

@vinevicious Рік тому

@@fliper975 to really understand that you need to study solid state (and for that you need to know quantum mechanics)

@DeShark88 11 місяців тому

@@vinevicious I'm not sure quantum mechanics is strictly a requirement. It helps explain what a band gap is and some stuff about majority/minority charge carriers, but really no-one is solving Schrödinger equations (or more accurately quantum electrodynamics vector field equations) for this stuff. It generally boils down to classic electrostatics for the most part.

@theFLCLguy Рік тому

I'm so thankful that Mehdi was there to protect us from the cross section. That was close, I almost looked at it.

@seitch1 Рік тому

Excellent summary of transistors. It's like the first few weeks of the first microelectronics class in school summarized. Please follow up with a deep dive into the device physics. That's the most fun.

@erdum Рік тому

I learned these things years ago but still loves to watch your videos.

@bheeshmavasuprasad Рік тому

Mehdi: Doesn't upload* Me: Hey, do something Mehdi: posts* Me: watches it immediately Also me: C'mon do something

@adriano2737 Рік тому

1:11 🤨🤨🤨

@brainwater Рік тому

Perfect timing! I just started putting together a project that needs a transistor to drive a power transistor.

@brandonfurtado380 Рік тому

Back when I was in school I would find it so difficult to undertsand concepts u explained but enjoyed ur videos so Id keep watching....now that im in uni I do understand quite alot of what u talk about in ur videos.. tbh a 1 hr class or 1 hr of reading doesnt help as much as your video helps understanding ...love the content simple and straight to the point with some fun

@sirspamalot4014 Рік тому

Something I didn't learn at uni but learned just now, Beta and Hfe are the same. Thank you, that's why I watch these even though I feel like I already know how they work, I still learn something.

@kiritosan7753 9 місяців тому

Thank you for your amazing efforts sir , we all appreciate these fun learning videos. I really learn a lot from you. Can't wait to see a mosfet video like this!

@khaloscar Рік тому

Perfect timing! We just went through transistors, diodes and different amps in uni!

@warmachine3943 Рік тому

Thankyou mehdi for these informative videos You have helped me a lot in my electrostatics class. And made them fun 😊

@shaunahn5730 Рік тому

Thank you from Korea As a normal university student this video just helps out so much! i am really shocked at how you can explain everything so simply . you make it so easy

@stefanfinesse7521 Місяць тому

I just wanna say I came across your page because im an EE student. I usually dont be too happy in classses. this just made me smile odeeee. Thnak you for being educational and fun....a rare achievement for EE instructors

@zacharybethel401 Місяць тому

Subscribed as a masters in electrical engineering. I laughed too hard when you reminded me the bjt cross section couldnt hurt me. Priceless. You deserve a comedy central special.

@053_abdulhannanbhat8 Рік тому

Really man best way to learn about transistors is through practically connecting the circuits. Thanks man this video really help me revise the transistors

@haroldfinz4863 Рік тому

This was a brilliant video, an excellent lesson, thank you. Especially the clip, "BJT is like an adjustable resistor" (3:04 to 3:29) which means a lot to someone who got into EE (tangentially) near the dawn of the digital era.

@eddiehazard3340 Рік тому

Please do more of these 101 videos ! We will start following along soon - so please keep going !

@Edsabre Рік тому

Wow, my Electronics class just started talking about these! Thanks for this!

@shavono8402 Рік тому

This video came at the perfect time, seriously. Thank you Mehdi!!

@birdyjr1153 4 дні тому

This video is loaded with information, but it was about the most useful video on the topic I have ever seen

@robertjanbout1437 Рік тому

I know enough about Metal Oxide Semiconductor Field Effect Transistors, but this video was pretty interesting and full of explaination about unclear parts of the oldskool transistor

@jonathanlister5644 8 місяців тому

You are just a brilliant teacher mate! Injecting humour keeps folks hooked on your message Brilliant!

@SkyhawkSteve Рік тому

Great video! It reminds me of my education as an electronics tech in the Marine Corps, where we were taught that transistors were "magic rocks". It was good enough for what we needed to know. In college, a teacher taught us "approximate to graduate". In other words, Vbe is 0.65V usually, use nominal beta, etc. i.e. keep sight of the big picture, and not the little details. Thanks again!

@TheBombanater 5 місяців тому

Im studying electrical engineering. I've been struggling in my Electronic Devices class. ElectroBOOM has been super helpful at answering questions i missed in the reading

@chaitali.karmakar Рік тому

This is really going to help college students sir. Great effort sir. Thanks a lot. Keep making videos like this & continue the series.

@kshiteeshbijjula8000 Рік тому

Thank you very much mehdi.... In my years during electrical engineering, I never had any interest in Analog Electronics... I was more of a power systems guy.... I always wanted to go in depth in learning Analog Electronics, but haven't had the interest.. Thank you for such a brilliant series ... Will follow this series however complex it might get

@mc_redspace Рік тому

Omg I have no idea if you saw my comments, but the fact that I asked for a video about transistors a few weeks ago and now it's here, is amazing thank you very much!

@vovanvovanich9 Рік тому

I watch your channel for many years, it's always interesting.

@tylerstephenson8886 Рік тому

God do I freaking love Electroboom. The dude makes electronics so approachable and fun.

@xdeathstar Рік тому

I am a master's degree student at Technical University of Cluj and this explanations are really really good as a base to better understand transistors. I am amazed how you evaded all the theory and explained really plain and simple a difficult topic. I'm glad I subscribed to you, thank you Electroboom :D

@thanoshoppop8108 Рік тому

You make me happy even when I’m down thank you keep doing what you doing I love what you’re doing keep doing what you love❤

@shadowrayy Рік тому

I learned more about BJTs in this one video than I did in the entire semester of electrical engineering classes I was supposed to be learning about them in.

@Dragonrider616 Рік тому

I love these electroboom videos, educational (I have a story about this that I will explain in a second) and funny at the same time. One thing he didn't mention though is that a transistor can also be used as a solid-state relay. OK, back to the educational part. My wife and I had an idea a few years ago for a device we want to try to invent, and for the longest time we couldn't figure out how to do part of it. We finally figured it out from watching an electroboom video, and while I can't say what our device is (I don't want anyone to develop the idea before me), I can say that it pertains to his video about peltier modules.