This is one of the clearest explanations anywhere on TH-cam. Just a guy standing at a whiteboard. No tricks, no animations, just clear, concise information. Thank you, sir.
So far, you were the BEST HELP on how to hook these up. I'm probably only a few years younger than you. I've just got into a Raspberry Pi for Breadboarding electronics and such. I've only been into it for about seven months now, but I'm just learning how to finally get the guts to learn these neat, little guys so I can use them to blink without the help of a computer Pi machine. Now, I'm going learn everything I can with electronic components. Thank you..
Really useful and very logical approach that allows the end user to apply principles to whatever components they choose, good of you to take time to share this, Thanks .
Thank you Mr. Titus, hope I spelled that correctly. These are the type of instructions I, at 63, have been looking for. I no longer work at my chosen career due to physical limitations, was a Contract Plumber. I however am still held on the planet by Gravity. I always liked,,, not loved electronics. But I guess do to my age get frustrated easily. I have spent a small fortune over the years on small quantities of components due to shipping prices. So I have so many, that I have forgotten what and where there shelved. For about a year I have looked for a LED driver circuit I could use as a dome light in my GMC van. Yes, I could buy one on eBay, I know that. But I enjoy being able to know I can replace by building, what almost always becomes obsolete,,, like "ic's" for instance. I hate frustration! Watching you explain how transistor operate directives is figured, seems a bit over my head, but doable without the FRUSTRATION. Thanks. I am wanting a super bright LED, cause I am getting old, it needs to be that for me so I can do tasks on chainsaw, or fix failing electronics's while Camping in the Cascades. I am aware of many off the shelf super bright flashlights available,, even had the pleasure of borrowing one, but its 85 miles from where I camp on some land I purchased too Klamath falls Oregon, buying batteries is a chore and expensive.
Finally! I just happened to see this video on YT start page! I've been searching for this explanation for years. I think I've got the type of transistor he mentioned.
Just one word Superb . First, find voltage gain from data sheet. here 60 . second, supply voltage 0.7 volt and third understand current ratio. and finally, calculate the value. thank you.
Keep up the GREAT WORK! I believe true education is important,, like what you are doing. I get that ic's are important and have their useful place,, however discrete components to build them is where knowledge gets lost due to convenience and apathy.
I don't get it, your not really controlling how much current is flowing though the led, isn't the resistor doing that by limiting the flow first ? you basically making npn function as a switch ? allow flow though the transistor ?
patprop74 Yes, the resistor in series with the LED does limit the current. However, a small amount of current (1 mA) going through the Base of the transistor controls the larger 30mA going through the LED. Most outputs from gates can sink/source up to 20 to 25mA, but 30mA is beyond their operating range.
Its' correct but you forgot the collector-resistance. Rc=(5-0,2-1,5)/30mA=100ohm. Where 0,2 is the drop across the transistor and 1,5 is the drop across the diode. 0,2V and 1,5V ...approximative values. Look into data sheets for right values....
This is one of the clearest explanations anywhere on TH-cam. Just a guy standing at a whiteboard. No tricks, no animations, just clear, concise information. Thank you, sir.
I love his squeaky marker
So far, you were the BEST HELP on how to hook these up. I'm probably only a few years younger than you. I've just got into a Raspberry Pi for Breadboarding electronics and such. I've only been into it for about seven months now, but I'm just learning how to finally get the guts to learn these neat, little guys so I can use them to blink without the help of a computer Pi machine. Now, I'm going learn everything I can with electronic components. Thank you..
my left ear really enjoyed this video
Very nice and logical approach to explaining transistors. This helped me immensely in my own DIY project. Thanks !!
Really useful and very logical approach that allows the end user to apply principles to whatever components they choose, good of you to take time to share this, Thanks .
Thank you Mr. Titus, hope I spelled that correctly. These are the type of instructions I, at 63, have been looking for. I no longer work at my chosen career due to physical limitations, was a Contract Plumber. I however am still held on the planet by Gravity. I always liked,,, not loved electronics. But I guess do to my age get frustrated easily. I have spent a small fortune over the years on small quantities of components due to shipping prices. So I have so many, that I have forgotten what and where there shelved. For about a year I have looked for a LED driver circuit I could use as a dome light in my GMC van. Yes, I could buy one on eBay, I know that. But I enjoy being able to know I can replace by building, what almost always becomes obsolete,,, like "ic's" for instance. I hate frustration! Watching you explain how transistor operate directives is figured, seems a bit over my head, but doable without the FRUSTRATION. Thanks. I am wanting a super bright LED, cause I am getting old, it needs to be that for me so I can do tasks on chainsaw, or fix failing electronics's while Camping in the Cascades. I am aware of many off the shelf super bright flashlights available,, even had the pleasure of borrowing one, but its 85 miles from where I camp on some land I purchased too Klamath falls Oregon, buying batteries is a chore and expensive.
E.H. Lipton m
I watched other videos that focused on voltage turning on the transistor instead of current. The way you explain it makes so much more since.
Finally! I just happened to see this video on YT start page! I've been searching for this explanation for years. I think I've got the type of transistor he mentioned.
Thank you for a clear tutorial. I wish you can post more of this video for MOSFET Transistor and OP-AMP. Thanks again
Clear explanation, thank you sir. I'm your student from Indonesia 🇮🇩 😊🙏
You are very clear explained,,iYou are a great teacher ..i love you sir and your channel..Godbless
Just one word Superb . First, find voltage gain from data sheet. here 60 . second, supply voltage 0.7 volt and third understand current ratio. and finally, calculate the value. thank you.
The best ever in every sense!
Thank you.
Keep up the GREAT WORK! I believe true education is important,, like what you are doing. I get that ic's are important and have their useful place,, however discrete components to build them is where knowledge gets lost due to convenience and apathy.
Very good and the best explainer in the world can you make more videos for us on electronics
Vce(sat) is typically 0.3Vdc for approximation, not 0.7Vdc; the resistor 90-ohm (assuming a 2-volt drop across the LED), or 91-ohm as a standard value
Correct calculation 👍
Crisp and clear 👌
Superb. Thanks.
Gracias por el excelente video.
Hello brother Ilike your video thank you
Superb explanation, thank you.
the sound is bad but the video is great!
Thanks
Thank you for your nice explaination.
I have a doubt.
How to decide 4.2V and 4V in base resistor?
Kindly let me know.
I don't get it, your not really controlling how much current is flowing though the led, isn't the resistor doing that by limiting the flow first ? you basically making npn function as a switch ? allow flow though the transistor ?
patprop74 Yes, the resistor in series with the LED does limit the current. However, a small amount of current (1 mA) going through the Base of the transistor controls the larger 30mA going through the LED. Most outputs from gates can sink/source up to 20 to 25mA, but 30mA is beyond their operating range.
Best explained
Nice explained
That screeching sound is being amplified by the pnp and the npn Transistors.
Thank you Sir!!
Thank you, sir.
Thanks!
Wow..! Unable to watch, your marking squeaking on the board. Trying using the side of the marker not the top.
U lost me at the 5th squeak.
David Garza, What....did someone said something....lol
I wonder why some people give dislike !?
Thank you sir
nice .. more videos, pls :)
We know , current is flow of electrons then why the direction of current is shown opposite to flow of electrons.
cool video cant wait t c more
Its' correct but you forgot the collector-resistance. Rc=(5-0,2-1,5)/30mA=100ohm. Where 0,2 is the drop across the transistor and 1,5 is the drop across the diode. 0,2V and 1,5V ...approximative values. Look into data sheets for right values....
good
After 10year
why transistors, just plug em into the battery.
Sorry, i red 20 v on the board, but its 2,0
No sound... fail!
Sound. ...
On the second example, i think the resistor on the base should be 20kohm and not 2kohms
nope, 2k is correct! 2v/0.001mA=2,000
squeaking