Transistor Logic Gates - NAND, AND, OR, NOR

This video provides a basic introduction into logic gates that are composed of NPN transistors. This video explains how to make the AND, NAND, OR, and NOR logic gates using two transistors.
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[@TheOrganicChemistryTutor]

Final Exams and Video Playlists: www.video-tutor.net/ Full-Length Math & Science Videos: www.patreon.com/mathsciencetutor/collections

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[@mariocuric6690]

Still at 95k Views. It's a great video but people sadly don't really use KZbin for studying

[@staotheduck4853]

​@@mariocuric6690 I am doing it!

[@Mrkenjoe1]

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[@Ivan-go8yk]

This was ridiculously simple to digest.. you never cease to amaze me 👏🏻

[@gustavomarchetti4760]

How this guy can be my math, chem and physics teacher at the same time??

[@morgancalvi6675]

He knows all three subjects. You HAVE to know Math in order to solve the equations...at at least the Calculus level.

[@lakshaysharma7990]

like as how can we study math, chem and physics at the same time

[@nicerice9689]

Perfect timing WTFFFF❤❤

[@gsspkarthik]

Same to me . This week my new semester starts and this is what they thought today...

[@yankozlatanov]

In theory you're correct, but in reality NPN transistors drop around 0.7v at base emitter so the AND gate output never gona be at 5volts with both transistors on, and if bottom only is on there will be some voltage drop on the output because the base emitter current is flowing through the output resistor to ground. This may be as much as 0.6 or 0.7 volts and false trigger another stuff on the circuit if is sensitive enough. I like to do my transistors AND gate by making NAND and inverting the output by another transistor on the top resistor output. Gòod video anyway.

[@88NA]

this guy really help me a lot in my education. God bless you.

[@morgancalvi6675]

Now you just need a grammar tutor.

[@88NA]

@@morgancalvi6675 Correct my grammar please

[@morgancalvi6675]

@@88NA it just should have said 'helps' because it was a singular noun...which calls for a singular verb If it were many people helping you, the correct verb would be 'help'.

[@88NA]

@@morgancalvi6675 thanks

[@morgancalvi6675]

@@88NA I hope you didn't think I was being a snob...majored in English.

[@scriptdevvs]

this is perfect! I'm learning electronics, and prototyping. This is prefect for my learning experience!

[@mrtoast244]

*Electroboom uploads video about transistors* OCT: "My time has come"

[@lyeaninick8446]

Love all your videos, your explanations are much more better and simple to understand then my tutors in class. Helped me so much in my studies, thank you ❤🙏

[@derekbambenek7803]

Thank you. I'm trying to learn TTL from a book, and the initial gate behavior was throwing me off. "Current-sinking logic" indeed lol!

[@dezcraft_dev]

2:35 what purpose does the resistor serve here? Probably a silly question

[@sxleong]

Wondering the same

[@mrwhitesam6917]

I think the transistors deliver a volt and then the current flows through the resistor resulting in the output to have 0 volt but I am not sure

[@fryrr4797]

It serves as the load

[@jayanthkumar6063]

For Impedance matching

[@kartikpadiya8073]

It's just amazing I am having my jee mains tomorrow and this kind of question are so helpful for that

[@itsyaboimirage3473]

Perfect timing. Just started to learn this topic in college. Thank you! 😌

[@petartrpeski6828]

I am super curious to know what your marks were like in high school?? I love your videos and I’m just curious?

[@thejronny]

I owe you any success I may achieve, you're a legend 👍

[@radek724vario]

Super wytłumaczone bramki logiczne

[@rreekkddaa]

Are the tranzystors NPN and PNP woking the same?

[@Eggtamaa]

i dont quite understand how the resistor works. Can someone explain it to me i dont understand how it works nor how it causes "voltage drops"

[@nibble1110]

Did you understand? I don't know what is happening

[@JCEurovisionFan1996]

Can you do a video on how to create linear and quadratic equations using Excel?

[@poolmotorrepairguyFL]

Jay the Florida pool pump motor repair guy. When Service Calls Longwood approved ! that was good info 2 know 👨‍🔧JG

[@sriramansrinivasaraghavan5846]

Excellent video thank you

[@chisomombawa]

Please to the NOT and XOR next

[@ceksking]

why does he change the resistor location when changing from or to nor does its location matter?

[@aishr18]

Wow, love the way you teach ❤

[@SuperYoonHo]

Thank you sir

[@anistudios5409]

Thanks. After watching your video I am able to make my own logical gates.

[@rohan9190]

Thanks for teaching me as a simple then my professor ❤

[@mrwhitesam6917]

8:24 isnt the no current flow in the resistor causing it to have no voltage drop and having then voltage as a result?

[@weixiao9470]

does he place resistor in AND gate wrong place?

[@shazamhumphrey1529]

is there anything you dont know mann!!!!........you are a top G

[@pavanpai2439]

Amazing explination, thank you very much

[@sanem0233]

May allah bless you hocam

[@DanielDavis-kl5cl]

Bravo, Bravo!

[@RunningRunner46]

The AND gate configuration shown in this video is not that practical. It is better to use a NAND gate configuration then connect its output to the input of a NOT gate , then its final output will be the output of an AND gate. It's like a NNAND(not a not and gate) which is basically an and gate

[@laszlotorhosi1867]

Thats what I heard too, but why is it not practical? Could you explain?

[@robertkastaman9109]

Because in real life, there is in fact a voltage drop across a transistor when it's on. This will cause the output voltage to be affected by the transistors that occur before it in the circuit. Having the output voltage be read from above the gates (then it would be NOR or NAND), you don't have to worry about the effect of the transistors on the voltage reading

[@benjamindreyer9884]

Correct. This way the circuit is reliable since you can chain multiple gates together. The problem with the shown AND gate in the video is that it will continue to drop voltage foreach gate chained together until the system won't work anymore

[@mihaleben6051]

Oh Whats a not gate then?

[@hb8540]

How about logic gates using MOSFETs?

[@mlthornton1]

What is the purpose of the resistor at the beginning? Also, in the case that both switches are on, what keeps a why does only a negligible current branch off to the outlet? Were it the same as water, you might expect 50/50 to go to to each branch?

[@nibble1110]

Hey did you understand? I don't know ty

[@marsad6563]

hey man can you make a video explaining mos, nmos, pmos & cmos logic ??

[@lmlagg]

Is there anything this guy doesn't teach?

[@talashpeygir2621]

Very clear explained thank you

[@prachi_13]

Thank you

[@zaintechtips]

NAND, and OR gates are not same???

[@redefined4657]

Bubbled OR (OR gate with inverted inputs) is same as NAND. But NAND and OR are not equivalent.

[@TheGamingDinosaurRoblox]

great video very well explained thank you

[@akashmalli6759]

Unbelievable🥳🎉 thanku sir

[@mrtauqs]

amazing beast you rocked it man

[@BrickToTheHeadOfficial]

Insane timing have my exam in a few days LOL

[@edrees404]

goat

[@robertbobby9590]

God bless you Man.

[@30.hoangthong52]

Thank you so much.

[@morimartinmadhe6089]

Poor explanation to to a learner

[@Gus-s9v]

Two tos

[@Gorim33]

Great explanation. Thanks.

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Can you make a video on automatic differentiation

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Best channel for jee advanced

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5:36 dawg 😂😂😂

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I like light emitting diode

[@ThorirLenvik]

Pretty LOGICAL, Sir!

[@geraldnjuguna2087]

super

[@Pulmonary.Tuberculosis]

First comment ❤️

[@andreaskelegai6680]

Thankyuuu so muchhh🥰

[@mezzofresh3521]

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[@eliseogarcia1024]

Nice information.

[@maryna.angelpa]

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[@ndnasimtalukder3902]

helpful

[@nitiann]

❤❤

[@dhadumia]

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[@mikejones-vd3fg]

cool

[@laflame___]

THANKS!

[@uttkarshtewari2532]

w pfp

[@gleebeeBuyMeAJacksonV]

5:28 don't understand why current wont flow from 5V to output directly. Why flow goes to the ground, if it is faster to go through the output?

[@nibble1110]

Glad to see more people. I neither understand, did you understand now?

[@wtfisggon7251]

thank you so much