Beginner Electronics - 22 - NPN Transistors
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- Опубликовано: 23 июл 2024
- In this episode we discuss the basics of NPN transistors!
*DISCLAIMER - READ BEFORE WATCHING*
I am an electronics hobbyist; I do not have a degree in electrical engineering. This series MAY NOT teach all of the appropriate safety required for general electronics work. Any advice taken from this series should be checked with multiple sources, and a professional should be addressed to ensure proper safety.
See my website: codenmore.github.io/
Follow me on Twitter - @CodeNMore - / codenmore
Comment, PM, or Tweet me for help!
Teaching to understand all subjects to the fullest extent! 
Хобби
**DISCLAIMER - READ BEFORE WATCHING**
I am an electronics hobbyist; I do not have a degree in electrical engineering. This series MAY NOT teach all of the appropriate safety required for general electronics work. Any advice taken from this series should be checked with multiple sources, and a professional should be addressed to ensure proper safety.
You never posted links
Hi, I have only s9012 PNP transistor. If I make the circuit by following your video it wont work. It seems that this pnp transistor is different, can you explain more
@@tmrenter Exactly what I was thinking.
im learning so much from this, please post this series more often.
Yes.....😉
*Summary:*
- a transistor is functionally similar to a relay
- it had 3 leads, the collector, the emitter, and the base
- you hook up the collector and emitter to your circuit
- but normally, no electricity can close from the collector to the emitter...unless you apply a very small amount of current to the base
- you can use a really weak battery to provide electricity for the base, or a bigger battery and include a large resistor
Ty
the hero we didnt deserve
I just started the series and, now, from this point I believe lots of doors opened up for me. DIY projects flooding my brain!!!
shut t up
I love the way you teach. I'll want more episodes to learn from you in electronics. GOD BLESS YOU.
This is a fantastic series! Thank you so much for showing us all this. I can't wait to see the rest of it.
I have really appreciated your videos. Is clarifying things I was acquainted with earlier.
DUde thanks you are making videos again.. ur videos are really my inspiration.
Thanks mate. We have the knowledge to build a solar light now!
nice to see you're back
Thanks a lot bro for making this series of videos.... Thank you ...Thank you.... Thank you.... :)
You are a genius
What is going on everyone my name is codenmore and i really need to finish this awesome video series.
been waiting for this video :) thank you.
Hey! Thanks for making this series, it's great to be reintroduced to electronics having taken a 5 year break from physics at A-Level (UK senior high). Any update on the links in the description explaining PNP and NPN transistors? Looking to start designing audio gear for my recording studio, so those guys will be hella useful
Transistors in a computer processor such as a intel core i9 are made of semi conductors typically silicone that are usually not conductive but when a charge is put through it it
becomes conductive
actually you teach better than most of my teachers xD ty dude
you teach me more in 1 hour that my teacher could in 1 whole year
do you have electronic teacher !?
To get my project to work I had to use a lower value resistor instead of the 10k resistor. I am using a 470. Is this going to damage my transistor?
very cool and nice. I am more biased towards the electronics series. keep the good work
Do you still need a resistor connected to the LED with a 3 volt battery? If the voltage drop of the LED in near 3 volts, why would it burn out without one?
great series, will their be more series like this in the future?
why would you connect the transistor's base to ground by means of a double pole push button? would it be because of static?
why do you hook up the base to the positive when electrons flow from the negative terminal?
thanks so much u are to the point and very real world practical
in the circuit schematics it is again the resistor connected to the cathode of the led, isn’t to the anode? regards
Excellent tutorial
your teaching is very nice
Sorry am i beginner I know this is silly but couldn't understand what was the function of the transistor in the circuit? All your other videos are amazing in this series!
If you used 2 AA batteries (3.0V), then why did you put 240ohms resistor to protect your LED when your LED forward voltage is 3.2V???
You're amazing. You're the best
when will the next game tutorial come?
Can anyone answer me plzzz!! at 4:04 shouldn't the resistor be placed before the LED since the current travels from + to - which means the current goes from the LED to the resistor while we need the opposite in order to lower the voltage before it passes through the LED so it won't burn ???
No, the order doesn't matter. The voltage is divided instantly between all devices connected in the series in a closed circuit, so the LED is safe (as long as the resistor has enough resistance).
amazing videos leaning a lot. i do have a small question though. in this video you connected you led with positive battery terminal directly and resistor after that. from your videos i understand current flows from positive to negative and if thats right then the high voltage should go though led first and then to resistor which will eventually burn the led coz resistor will only stop current after it goes through it. so it either that putting resistor anywhere in circuit will decrease the voltage throughout circuit or the current flows from negative to positive. unless its one of the 2 cases otherwise led should be broken by now. so what is it?
your is 2n2222 A338 im finding "2n2222 a" and "2n2222 A331" what does the "A" and the 338 mean?
You can just touch the wire connect to the base and it will light up the led a little bit. i am having so much fun with this.
I suggest show lessons with Circuit Wizard
you mentioned some links in the description to learn more about transistors :upside down smile:
where is the link in discription????
You're God of electronics I bowto you
Shouldn't the resistor be placed before the led in the schematic not after it?
Shouldn't the resistor be placed before the led more towards the positive side of the power source? I'm assuming electron flows positive to negative and in the circuit drawn above, wouldn't the led short out after awhile knowing the resistor is placed after the led?
electrons flow from negative to positive. - just a side note.
I think he said electrons flow from negative to positive but conventional current flow is accepted as positive to negative for schematics.
Also, note that he connects negative to emitter. Emit = emit electrons. Positive = collect electrons. But a circuit is always balanced. Negative to Postitive to Negative to Positive.
On the diagram at around 4:30, why isnt the resistor going on the other end of the LED? Shouldnt it be resisting electricity as it enters the LED?
I too am confused by this
the order doesnt matter. if you imagine the current flowing from + to -, even tho it runs through the LED first, it needs to hit the cathode to complete the circuit. once it hit it, all components will begin working simultaneously and instantaneously.
thanks a lot sir💯❤❤❤❤
No description links :(
If the LED is 3.2V, and the power source is 3V, why is the 200ohm resistor required? Surely there is no need to lower the power source voltage when it's already less than the forward voltage of the LED?
The power source usually is 9v and the led is in another circuit......
He specifically said in this video that it was a 3V power supply, not 9V.
brrayne you’re right. I missed that. I don’t think he will answer your question. There’s never a response. Good luck with the rest. I guess we’re the only ones left haha
good study :)
Where are the link???????????
So how is a transistor different to a relay that needs less current ?
in my view a relay is a mechanical device while a transistor is a solid state device which should be a quicker and more reliable switch.
Sir I want to learn more advance of it
very clear :)
can you put negative side of battery at base?
i dont understand how the hell he triggered the transistor by putting the positive side of the battery only
Thanks for all of the previous videos, but here at 5:27, you said 100,000 ohms where as in the schematic it is written 10K-Ohms which really means 10,000 Ohms. So in reality which resistor needs to be used ? 100,000 Ohms or 10,000 Ohms resistor ?
10k he added a little note in the video
does this mean that those touch (screen) buttons are actually using your finger as a resistor? 9:10
It's called capacitive touch. So your fingers are capacitors. When you remove the fingers, the capacitance dies down slowly. Have you noticed how certain poorly built screens have slower movement when you drag your finger across?
In the base of the transistor, I used a resistor of only 100 Ω, and it worked fine. Why?
In the schematic, why did you put the LED before the resistor? Shouldn’t the resistor be before the LED on a conventional current?
It really doesn't matter. The resistor makes the flow of current more difficult for the whole circuit, not just for the part placed "in front" of it!
With the message written on screen at 5:56, what does "ground" refer to? Can someone please explain "ground" to me better? Is it the negative rail?
Jonathan Seale yes, it is the negative rail
Ground is not the negative side of the battery. That is not accurate. Voltage is always between two points. You can have circuits with multiple voltage and current sources. Ground (GND) refers to a common point for all circuits that have a voltage potential of 0V. Don't confuse GND and the negative rail. In some circuits your negative rail can be -5V, -10V, etc., and that is not ground.
Also please note there are two types of ground. On Schematics they are shown differently. There is earth ground, and circuit ground.
Wait why did he draw pnp transistor at start and aay it npn im connfused
perfect
Well explained as always. How about the java programming ? When is the next video?
you said in the description there are links for going in depth on transistors. Am I blind???!!!
That's what I thought as well.
Unfortunately they are not there.
Abhilash Patel I’m also disappointed
# 22
Maybe you are blind. You can't see GOOGLE and type in a search term like "How does a transistor work?" You'll find out lots of things like "How come the transistor is here and not there?" (because it doesn't matter!)
And now we know how touch sensitive buttons work.
here you again use resister after LED instead of using it before. i have lot of confusion please tell me why
Look at his video number 9-11 or something and he explains the reason. It doesn't matter where you put the resistor. The negatively charged ions flow from negative to positive (this is the main driving force of electricity) and then the positive charge flow from positive to negative. The rate of flow of these is directly proportional. If one slows then so does the other and if one gets faster so does the other. So whether a resistor is before or after it gets affected by the resistor.
Just think if you did a little bit of reading about electronics you would have found out long time ago. As with all the other asinine questions in this comment section.
>> BRAVO
I missed the point of why we ever need a resistor instead of a relay, what are its main uses/advantages
Transistors are smaller, and they don't have mechanical parts that could be damaged. Also, they can be used not only as switches, but as controllers of the current flowing through the circuit as well. For instance, the processor of your phone contains about 2 BILLION transistors! Can you imagine it having the same number of relays?
i’m confused why the transistor was necessary in this circuit
I’m still here. It must be good.
But what is its purpose in a circuit??
JVA Gunner
It can be used to amplify or switch a signal.
YOU DO NOT HAVE LINKS IN THE DESCRIPTION TO LEARN ABOUT TRANSISTORS!
SO LOOK IT UP USING GOOGLE OR SOMETHING AND DON'T WORRY ABOUT IT!
this explains my bipolar ex wife... she was a transistor
I dare you to make a short video explaining how your ex wife is like a transistor XD
These segments are excellent, but I've managed to confuse myself regarding current flow. If the electrons are negatively charged, why do they flow TO the negative pole of the voltage supply? Intuitively they would flow AWAY from the negative pole and TO the positive pole. What am I missing here?
It's really based on the misconception of how current flows back when electrical experiments began. Multitudes of schematics and such were drawn in what is now called "conventional flow." That's the basic and pretty much universal way electrical flow is interpreted. The only area in which you'd encounter analysis of "electron flow" (the actual way) is in advanced physics courses studying electronics.
are you aware that Kwantlen polytechnic university is using your videos for educational purposes
FOUND IT! i think? what you have is a "2n2222" their is a 2n2222A however the "A338" appears to be the [ date and place ] of manufacture! and has nothing to do with the unit also 2n2222 is old the new one which is better is 2n222A but cost more!
:)
Which is more RELIABLE 🙄 ; the transistor or relay 🤔
I am NO expert,I'm here watching for the same reasons as you. But, I think the transistor is more reliable mainly because it can do more and I don't think there is too much more difference apart from the amplification and the npn transistor is smaller than a relay
@@rainbowchap6973 I can accept that answer 👍🏿 "Thank GOD", and thank you very much for your sharing support and time 😉
This is technically incorrect. Transistors are current control components, not voltage. MOSFETs are voltage controlled.So many details are missing in order to use transistors correctly. You do need the math to design a circuit and to select the proper transistor for the circuit. Even at a very high level which I think he is shooting for, his explanation of transistors is incorrect.
Your channel is empty.....
... barely touching. *Stab* *Stab stab STAB*
Stop biting nails😌✋
Speak slow!!!
you speaker like a tv host， yet you doing electronic engineering，what a waste
your explanations are vague because you dont teach the underpinning knowledge, this might be because you dont know the answer or it might be because your planning isnt good enough, either way this video would benefit from a better and clearer explanation.
Not to be rude or anything man but while everyone is complimenting him you just jump right in and criticize him
if i have an issue with the vid is it not better to tell him rather than just kiss his ass? that way he might take on my constructive criticism and make changes that the net result would be better vids, more views and more subscribers.
👍🏼
thats what i meant and also,u got my name wrongg lol :))
David Bromley for detailed explanation go read Wikipedia you dumbass