What is a transistor? How does a transistor work? Part 1

[slitzkrieg]

We need more of this kind of awesome videos, instead of those other kinds of garbage videos that tell us all the unnecessary things, confuses us, wastes our time and patience and in the end teaches us absolutely nothing. This video is not fancy but still it is so clear cut and simple.

[ccdm9]

I'm going to an EST school and no one there had as clear a definition as you had! thank you so much!

[soumyasayujya]

whoa!!?! awesum!.....

[sifatsultan]

you are THE BOSS!! I was feeling peaceful all throughout the video !! In my class I feel like there is so much chaos in the world and there is no hope!!!

This will help me and my friends who have been thinking of dropping the major!!!

[Souravpaul619]

wow!!nice!!!

by the way can anyone send me a link where i can get transistor as a an amplifier & feed back oscilltor???????m having my exams afet 4 days!!!

Urgent help needed!!! :)

[electroletic]

Man you are a genious, I wish my professors would of told me a transistor is fundamentally a resistor at heart, It is much easier to make the connection and understand electronic components and how they work as a collective. Mr.Steelwheelsdown your explination is brillant in it's simplisticy.

[123arskas]

Wow you teach us like if we are a little baby !!!!!! I love that style because whenever i attend a lecture in my class i think i know nothing while my teacher does. So i need to get all the simple information from A to Z in my little brain.

I wish all of my teachers were like you.

[annugon]

THANKS!!!!



[MrImmortalTT]

Hahha the best explanation ever . In order to understand it is needed a great intro .

[ShenasRI]

Excellent explanation!!! at least now it makes scents and I can finally visualize the flow and functioning of a transistor in a circuit(makes the calculations easier to understand as well).

[MrMinimalSWN]

So actually I could use a ohm-meter if I wanna measure the resistance between collector & emitter. And by giving a dc value (of the maximum voltage you're working with) to base, I could use the measured resistance(between collector & emitter) and the resistance(of whatever u attach to the output) to calculate the leakage voltage going to the output.

Thumbs up if you want people to see this

[SteelWheelsDown]

@MrMinimalSWN, The ohmmeter measures resistance by applying volts to a component and measuring current thru it, and finding resistance that way. The BJT transistor's resistance changes with supply voltage and base current, so the resistance you measure may be different from the resistance that the BJT has in the circuit. That's why we measure current thru the collector resistor and voltage across the transistor. We then have BJT collector current and voltage, and divide to get resistance.

[AVAL0NIX]

@SteelWheelsDown Thank you

[LaEspriella]

question, do you think that to be a technician is necessary to be really good at the math behind electronics?

[LaEspriella]

sorry i mean a is a diode a resistor?



[LaEspriella]

so a diode is a transistor?, and in your graph the result at the bottom is the amplified form of the version?

[SteelWheelsDown]

LaEspriella, I mean to cover this in another video, but basically the bipolar junction transistor is two diodes, biased in opposite directions, but with the diodes fused together so that the two diodes become one device. You can't make a transistor out of two diodes, that won't work. The current from base to emitter activates the base-emitter diode, and causes collector-emitter current to flow. Tiny current at the base causes big current at the collector.

[LaEspriella]

@SteelWheelsDown o thanks, but this is the response to what question?

[SteelWheelsDown]

@LaEspriella the diode is a resistor with two different values: very low if current flows one way, and very high if current flows the other way.

The lower graph in the second video (collector voltage) is the amplified version of the base voltage. It's not to scale, as I was just doing it for illustration.

[smiley235]

That was good. I dropped out of electronic engineering about 5 years ago. Was so confused about transistors, all the terminology and maths that went with it, yet couldn't quite understand what it was actually was doing. A video like yours would have helped me a lot back then.

[oneitusatu]

12:14 yes it is,

you are doing right,sir

[Ergophile]

04:50 reminder

[d35p0]

9:11 epic moment!

[SteelWheelsDown]

@d35p0 Sorry it took that long to get to the point, but that was the best I could do and still make it work. That was my second attempt too.

[PazEgtya7Underground]

i understood this shit ..

but still hating fuckin electronics :(!

[sunnyjaiswar1992]

it was a decent lecure...really cleared my conepts....Thank You....:)

[jellyfrass]

13 people don't like transistors

[OriginalGansta88]

Dude u rock....lol

[238lamain]

Thank you. I missed my teachers point during college. Now i totally understand.

[8644371]

You are brilliant with your analogies.

"If you can't explain something simply then you don't know what you're talking about."

~ Feynman

[01JordanF01]

So a transistor is a resistor that changes value based on the voltage put in a circuit? So that means the voltage is made bigger ? :S Im so confused, I don't get it still :(

[SteelWheelsDown]

Jordan, any resistor can affect a voltage by being part of a voltage divider, and if you have a voltage divider with a variable resistor, then the output voltage will be variable also (and bigger!). YouTube limited me to only 15 minutes per video at the time, so I had to explain this concept in part 2 of the video - go check that out. I have also just uploaded Part 3 of this video, maybe that will help a bit more. Thanks for watching!

[a2zhandi]

one size fits all!

[THETRUTHOWHY]

LOL SO FUNNY loved the last part. thats what I was thinking. Resistor? LOL ty

[thequnson]

Thank you very much. This is information; people make it a business and never tell you the real truth. they tell the truth with some mixed ingredients. you just made to the point and that is what makes it valued. Thanks again.

[noelito01]

thanks a lot man

[killer2611]

soo 13 minutes later, im even more confused than i was before watching this video. im not an efficient learner. hopefully part two wont have the same effect on me XD

[TheMegalucian]

wait, excuse me but i know a transistor is a variable resistor... but, how can it amplify current??? i hear alot about transistors that amplify for example from 5 volts to 9 volts???

[q8mp3]

I love you man you make it so much easy , thank you very much

[jiujitsukiller9]

excellent>>>E-X-C-E-L-L-E-N-T 

[imvanessavella]

hahaha! thnk u .. i hope all the teachers knows how to make things clearer and simplier .. like you! amazing .. hoping that ull post more vdeo :) hehehe! for all the future engineers and aspiring inventor <3 for the future!

[l3g10nw]

i feel like a monkey when he explains like that lol. i said to myself " DONt u get it? T-R-A-N-S-I-S-T-O-R, A resistor whos value changes! dumbass."

[hnn124]

@steelwheelsdown thanks dude. Great explanation. Keep it up!

[javisan14]

Finally someone who know whats they are talking about. Please post more videos, the other channels videos just talk their asses off and never get to the point, thanks again.

[warlox414]

wow... i love your way of explaining

[dchreha]

This video helped me to understand, finally. I really could not find a good BASIC explanation. This video did it. Thanks!!

[itspennysboat]

i loved your explanation!!!

[antegas]

Thanks a lot! very good video

[alex801848]

hello, I've always thought that a transistor is just a switch (on/off), so that's completely wrong??? Because when I search around about the transistors inside the CPU, they always say it's nothing more than a switch, 0 and 1, that's it. That's totally off track?

[SteelWheelsDown]

@alex, a switch is just a resistor with either a low resistance (on) or high resistance (off). A transistor can have low or high resistance across it, but it can also have resistance values between fully-low and fully-high. A computer only makes use of the transistor's extreme resistance values (0 and 1), but a transistor in an amplifier can have a resistance that can vary anywhere within the range from 0 to infinity ohms. Computers and digital circuits are a bit less complex than amplifiers.

[8644371]

@SteelWheelsDown

Amplifiers ≟ Analog

[legoclockfreak710]

THANK YOUUUUU!!!!!

[gimmedaloot754]

You're simply awesome

[filladellfea]

great video - thumbs up

[freezzertime]

l absolutely love your appraoch to this subject...however, would've loved it more interactive more showy.

[goeiecool9999]

Your like the electronics grandpa I never had. :'(

[hhhvelocity]

@steelwheelsdown sir , if u can not reply me through gmail. U can mail me in facebook . Search me under the same id dat i had given u.

[krekopsic]

Great job. Wish you would make a video school on electronics. Cheers

[hhhvelocity]

U rock sir. . . How can i contact u?. . Pls give me ur email id. . .

[SteelWheelsDown]

@hhhvelocity In the upper right corner of the video webpage is your YouTube username. Click on that to reveal a drop-down menu, click on Inbox, and then click the Compose button on the left. You can send messages from within YouTube, from one user to another.

[userx666666]

Thanks for watching? NO. Thank YOU for explaining! I want to make my own subwoofer amplifier and I would like to design something myself, while learning more about electronics. I'm a rookie when it comes to this stuff, but I did goto school for it. I've learned alot in school but this is by far the most simple explanation I've heard so far. I'm about to watch part two, and again -- THANK YOU!

[roboticmehdi]

what is the driving force for the electrons from n type to jump on p type at junction in p-n junction diode?

[shadowC10ne]

Why can't people just explain things like you did? Thank you.

[1XxShenxX1]

Awesome



[guerno1]

thanks man, this is really helpfull. it's like you say, do not focus on the physics. greets from europe

[DarkLevis]

Great stuff

[Eraneox]

@SteelWheelsDown Your by far the best i'v ever came across at this, any other hobbies?

[NEEQOS]

Nice explanation for the layman. Thanks

[luminaia]

Superb! Thanks for putting this together.



[georgealex17]

Thanks. Simple is grand.

[SmokeTatum]

Man you made my day :D

[SmokeTatum]

Thank GOD after watching hundreds of videos about transistors and explanations about "molecular definitions and paralel universes" (nothing for beginers to understand) in all that *excuse me* shit explained in language that can be only understood by those that already understand it. I found an explanation where already in middle of video i understood instantly how this f* transistor works.

GJ, thumbs up, good luck, cold beer, glas of whiskey, all good things, for perfect transistor tutorial! TY

[StrykeForceXBow]

Hello from Europe !

I liked your simple explanation.

Please continue in the same way and DON`T listen the critics

made by "roket scientists" who prefer complicated definitions.

bye bye!

[valko007]

outstanding, and funny as well thanks...

[keyurmahajan4u]

gr8 work done....awsome...man....

[xEaGLeNeC]

Transistor. This is an abbreviated combination of the words "transconductance" or "transfer", and "varistor". The device logically belongs in the varistor family, and has the transconductance or transfer impedance of a device having gain, so that this combination is descriptive.

[SteelWheelsDown]

I understand. I have posted a video reply to your comment on may channel. Thanks for watching.

[vmelkon]

@SteelWheelsDown I have also read that transistor is a contraction of "transformation" and "resistor" as it says at 9:05

[esQo0020]

hahhahhaha DUDE AWESOME VIDEO :D great job :) i really wish you made more videos like this and great job for the examples that also made me "feel" the transistors function...altough im a litle stubborn about this stuff and like to know the physics behind it i found this extremely helpfull :D thanx again

[esQo0020]

hahhahhaha DUDE AWESOME VIDEO :D great job :)

[Pagweb]

Holy shit! I finally got it.

[m4unot]

I use a solar cell (3.5v) to convert solar energy inflow and transfer it to a battery (2.4V) - which "diode" should I use? or I can use ANY diode?

U ROCK!

[BuRninsh]

Superb video got it finally. God dammit =)

[Umo111]

Love you, keep making videos =]

[a3oStudios]

After hours of viewing many videos about transistors, this one is the best.

"A Transistor is a variable resistor" should be the first thing you read when you start trying to learn about transistors. Once you know that all the other details about implementation make much more sense.

[Fal1ingUp]

hey so this is probably a really dumb question, but when you hook up a transistor, you could connect the positive wire coming from the wall (AC) to the collector. you would then put another positive wire coming from the emitter to whatever you were trying to turn on. then to "flip the switch" and connect both positive wires, you could have another positive wire connected to the base from an alternative power source (DC)? is this right or am i way off track?

[SteelWheelsDown]

@Fal1ingUp - That's a good question, not dumb. The thing is, the wires from the wall have a HUGE amount of voltage, and whatever you are trying to power with that wall current (a motor, a lightbulb, a hair-dryer or whatever) take a huge amount of power, like sometimes 1200 watts or so. I don't think that any kind of transistor can have that much power running through it without detonating. Better to use a triac or relay (more on that later).

[Fal1ingUp]

@SteelWheelsDown thanks dude

[jetham]

GOod video

[drexel1977]

Informative including origin of and history transistor.