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

This is a simple description of what a transistor is and how it is used. Tip jar: http://bit.ly/icYMcw Thanks!

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Education

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• transistor
• transistors
• work
• works
• simple
• simplified
• basic
• electronics
• electronic
• amp
• amplifier
• beginner
• beginners
• dummies

[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.

[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.

[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).