Freitag, 29. Juli 2011

electricity with Mekkor today: sorry, but we also need the transistor

Hello and welcome to another post about electricity *wohooooo*

i actually wanted to post that yesterday but then my internet connection broke down.
So i had to wait half a day to post something new. Damn storm.

Well, last time i said we would make something incredibly interesting. But i have to disappoint you. Sorry, we have to learn some things about another electrical component first.

But this component is really something usefull.
It is the:
Transistor *tadaaaa*

What is an transistor?
A transistor is like a switch where you can regulate how much current flows through it.
A transistor is also an amplifier.
To understand how a transistor as an amplifier works, we would need more info than i already gave you + there are so many different transistors that your head may explode if i explain them all to you.
So we just use the transistor as a switch.

I personally think that this picture explains it really well.


Look, the more water flows though the little red gate, the more it opens the big red gate.
That means:
The more voltage is onto the "Basis" the more opens the "Kollektor" to let more current though.
If there is no voltage onto the "Basis", the "Kollektor" is non-conductive.

Imagine that you have to controll when a current circuit is conductive and when not. You would always have to push a button.
With a transistor, you can controll that without any buttons. The transistor is only conductive if there is voltage onto the "Basis". Thats easier and faster than pushing a button.

But way dont we just use a normal switch instead of this thing? Let me explain it like this:
If we had a perfect switch, what properties should it have.

- endless resistance if non-conductive
- no resistance if conductive
- no wear
- react immediately


A normal switch has:
- endless resistance if non-conductive
- a little resistance if conductive
- wear
- reacts slowly because you have to push a button/flip a switch/whatever and that takes a few milliseconds

A transistor has:
- almost endless resistance if non-conductive
- a little resistance if conductive
- no wear
- reacts immediatly

Now you see, that a transistor is a faster switch than a normal switch, has no wear and can also be used as an amplifier. Clear victory for the transistor.

Now we know (a little) about transistors. Next time we are going to build something... hopefully ^^

Bye :D

Kommentare:

  1. thats really intresting dude +follow

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  2. This is very very interesting indeed.

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  3. Shame your net died, but at least it came back :) good info as always too.

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  4. this is interesting but where is the awesome?! haha anyway nice post.

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  5. Nice! I can't wait to see what you're building! Keep us updated!

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  6. You sure know your electricity xD
    Keep it up, kinda fun too read ^^

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  7. Dieser Kommentar wurde vom Autor entfernt.

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  8. I really like your posts. I haven't dealt with this stuff in years. Went to the wrong school for a degree and ended up not getting a job working with circuitry. For our final project we had to use switches to open and close. I made a setup that would set bombs off with a remote with a 2 second delay on each bomb. I got an A and to boot my professor was middle eastern! Guy was cool and told me to keep the bomb talk down low.

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  9. Finally I know how transistors work.

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  10. Ap physics taught me as much as i need to know :)

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  11. My brother will be using this anytime now for his Electrical Engineering classes. I think I can use this to help him later... or so I hope.

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  12. More information in my head now haha

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  13. Well, maybe I'll learn something when we get to the project that I didn't know and can apply to my pedal

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  14. very cool man, keep it coming.

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  15. that was awesome man, informative and interesting

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  16. Thanks for taking the time to detail this out for us.

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  17. Well there's something I didn't know xD Sweet post man.

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  18. I used to know my electronics, and now that I am getting back into amateur radio, I find my skillset has slid back into terrible-mode. Thanks for the refresher.

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  19. In what situation would you use a transistor?

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  20. I'll be getting into this stuff in more detail in college.

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  21. so much information for me haha, keep it up!

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  22. fukin hated the electronics subject in school, was only good at the basics at everything else i fudgedup good

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