MAKE presents: The Transistor
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- เผยแพร่เมื่อ 29 มี.ค. 2009
- They electronically switch and amplify signals by harnessing the unique abilities of semiconductor materials. Their invention has transformed the world of electronics and accelerated our entry into the digital age. Behold - the Transistor!
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Make: Electronics, 3rd Edition: www.makershed.com/products/ma...
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audio and video by Collin Cunningham
Learn more here: makezine.com/2013/08/20/make-p...
More Make Presents:
Ohm's Law: • MAKE presents: Ohm's Law
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The Capacitor: • MAKE presents: The Cap...
The LED: • MAKE presents: The LED
The Inductor: • MAKE presents: The Ind...
The Multimeter: • MAKE presents: The Mul...
The Oscilloscope: • MAKE presents: The Osc...
The Integrated Circuit: • MAKE presents: The Int...
The Diode: • MAKE presents: The Diode - วิทยาศาสตร์และเทคโนโลยี
I watched this series in highschool and now I'm an electrical engineer!
grats
Same here hoho
congrats! what field do u specialize in?
@@justin.campbell You did the thing!
Proud of you stranger, good job.
Best start to an electronics tutorial; ever.
thanks for helping make the world a smarter place
i love all their videos on electrical components
Squagnut, Thanks for the response. It was helpful. I am makeing progress.
Good amps use transistors, great amps use vacuum tubes!
best maker series so far!!!
Great presentation of history and cool project!
Thanks, my understanding is better than before!
I like the floodlight you used to splash against the back wall to make yourself stand out, good idea gota remember that one!
This is great. Thank you!
Very informative, nice job
Thanks. Gr8 info.
Very nice video.
Thanks
I'm trying to fix an old television from the 70's that's having some problems. I find that these video's have been very good for helping me understand these things. Only problem is now I need to find the right parts to fit the TV. And yes I do know the dangers of working with TV's and high voltage and have taken the correct precautions to prevent getting electrocuted.
Awesome Vid. It would have been useful about 1.5 years ago when I was learning about transistors and semiconductors in school.
YES COLLIN SHOULD MAKE MORE VIDEOS
THANK YOU
great vid
relay educational
amazing explanation !
Another Great Video,,,Thanks Video!!!!
thank for your time
GREAT! Excelent movie.
I always like this guy's videos, really cool.
Awesome video, TYVM!
really excellent
I watched you again and Thanx for the answer. The Base is Germanium.
Very informative, agent Smith...
Yes..must be related to Mike Myers? Excellent dude!
I hope these videos stay up forever. I use them in CTE classes to get my students started on basic electronics. This is one of the first circuits they build and and the look on their faces when they get a working unit is priceless.
Thank you
very informative
thank you so much for the differences of pnp and npn transistors! i was ripping my hair out trying to figure out this schematic which had a pnp transistor. At the time i presumed that pnp transistors worked like npn transistors so the schematic didnt make sense. Now everything is clear. Thanks.
Sooo well done.
Please put links from end of video into the video description. :)
very nice thanks
Thanks mate!
thnks... a lot!!!!
thanks, now i actually understand it
@ Collin Cunningham : You're the only reason why I still watch MAKE! Any other videos from this channel really annoy me!
Collin is the best! MOOOOOOORE! :)
thanks on the info
The quality amazes me even though it is 12 years old
Thanks!
Awesome video!
Very nice
WOW this is really well done for 2009! cool!
@mclovinbryson They are just two wires - as in the video, he just touches them to his skin which conducts enough current to turn on the transistor and light the LED. The 1k resistor is needed to prevent the transistor being damaged if the probe wires are short-circuited, and the 100K resistor is needed to pull the base terminal down to ground when the probe wires are open-circuited (it forms a potential divider with the 1k resistor plus whatever the external skin resistance is).
Each resistor has its own purpose in the circuit. The 220 ohm resistor limits current to the LED so it doesn't burn out and "die". The 1K resistor limits current to the transistor's base and forms a voltage divider in the case of a short across the probes. The 100K resistor forms a voltage divider with the 1K and the probes and prevents shorting the transistor base to ground.
Wow dude, so cool: thanks for existing.
awesome!!!!
Great Vid!
What amazing journey transistors took from Lilienfeld's lab to the feet of Jimi Hendrix!
MAKE MORE PLZ YOUR AMAZING0
@mtdeezy The 220 is there to limit the LED current. Most LED's can only handle a few milliamps before they burn up. The other two are used to setup the bias circuit for the transistor. Basically, you want some current to flow to the base of the transistor to bias it, but not a lot because small signal transistors will also burn if the current gets too high. So all of the resistors are used to protect the semiconductors. Hope this helps.
I learned more in 10 minutes then I did in hours of reading. Finally, a lucid explanation of what the different types of transistors are, and why the original one had that goofy looking wedge shaped thing. Thank you!
Oh Collin you so delegint .....👍
the resistance is quite high, but the power to resist is unmeasurable :)
loved it. i agree with Al Roids, make some more basic circuit tutorials. there aren't many out there...
Collin Schrute
Hey !! Thanks
Sweet tie.
Yeah. I'm relatively new to this.. and still learning a lot. I just replaced the zsus board in my TV and was looking at the board. Looks like their 250V N-Channel MOSFET's, FQB27n25 along with a bunch of other goodies.
Wow. So That whole thing on Maron about Tube amps was talking about transistors. So the debate on how to play vinyl best is about the amplification medium used.
Thanks a ton.
badass tie.
you are the best. cant wait til new video!
Yes it does. A working transistor is like having 2 circuit loops. a current source to the base (eg, Battery-->resistor-->base-->emitter-->ground which completes the base circuit loop, the collector/emitter loop =
Battery-->collector-->emitter-->ground.
it's probably best to google for better explanations.
I had tested this circuit with n channel mosfet and it works
@pinochska i think you miss understood. the resister i was talking about went from ground to gate and i think was 220k i believe and too high of a resistance for what your thinking.i found out it is to make shore radio signals do not turn on the transistor so its like a filter a way
Very good info. Why do we need loud music in the background???
I wish I would've had a teacher like you growing up. What a cool vid.
Amazing job explaining.
@STREETRAT211 The same 3-pin TO220 package is used for transistors, MOSFETs and various other parts as well as for voltage regulators.
Great i was wondering what an transistor is almost for a week and now i see its verry easy .... id also love to here more about micro processors, chips etc and maybe how to reprogramm them i dont know if that is posible buuut idlove to hear some info about that stuff
Nice Video .
It gives a topic flavor and enriches the experience of learning.
You've also spelled 'history' incorrectly.
Nah. Just a 14 year-old hobbyist who loves electronics. :P I have taken some college level courses in electrical engineering though. I'm glad to have helped. :)
funny and smart I like listening to him
well you can with a microcontroller like the arduino, if you want it to be all transistors, google it lol, but there is a way with the lm3916 it has a pin for an analog signal like what the schematic he is using is outputting or a potentiameter or a microphone and when you talk into it the led bargraph will respond accordingly
good times!
@Paggee Because you need to resist some of the current, otherwise it would be too high across the Emitter-Base junction. and therefore blow open the transistor
MOSFET: Metal Oxide Semicondoctor Field Effect Transistor, in case anyone was wondering. :)
Ty for the Transistor gameplay Looks like a good indie game
You have a great narrating/teaching voice and demeanor. Thank you!
@sinupinginaaber The led color is green when he lights it up, the red glow was probably the camera light.
@leejesm
its not always that way, use datasheets if your not sure, for example, the bc547 transistor (most common european npn transistor) has as layout CBE
I'm not sure how much background you have in electronics, but I'll try to explain. Initially, the transistor (2N3904) is off due to the lack of base current, blocking the LEDs path to ground. As a result, no current flows and the LED is off. When you touch the two probes, a voltage divider forms at the base and a small amount of current is allowed to flow, enough to turn on the transistor and shorting the LEDs negative lead to ground. Current flows through the LED and the LED lights up.
They form a voltage divider. Without the 1K resistor, too much current would flow into the transistor and potentially damage it. Without the 100k resistor, the transistor's base would be grounded.
The whole point of the circuit at the end was to demonstrate, basically, how a transistor works. Of course there are better ways to make a LED light up, but he just used a way that incorporated a transistor.
To answer your question though, you could make that circuit and it would be a better way to turn on a LED
FYI for the little project, if you only have a 5V supply like I do, change the 220 ohm resistor to 100 ohm and the 100 Kilo ohm to about 220 K. It still works fine.
that beating sound really kills the concentration. This is a lesson video. Not a music beat video. Other than that annoying aspect, this video is awasome. 10/10
I "studied' electronics in college, I hated every single second of it. I wish I had found this video back then maybe I would've been more interested.
so your saying that if my conputer did not have Transistors, that i cant watch this video? also nice explaining! Keep making these videos.
Mr. Anderson welcome back...
Nice
@maurigian1 very well said
Transistors amplify sound from electricity
@makemagazine
You got one big mistake about PNP type transistors in there.
They are normally open like the NPN untill you apply a negative current at the base.
Only junction FET transistors and a special types of mosfet are "Normally open" without current at the Base/Emitter or zero voltage at the Gate/Source nodes.
Excellent job of showing the history of the invention. I am thinking of making a video on transistor switches. If I do, I would like your permission to reference your article. Please respond.
I would love more videos like this! I really like that he speaks slowly
4:50 i just came up with that idea after he mentioned the probelm , then he mentions that was the actual sulution :)
@ravendfj You have to use a resistor so you dont blow the led. The led looks to be about a 3v led and he is powering it with a 9v battery.