CMOS Tech: NMOS and PMOS Transistors in CMOS Inverter (3-D View)

[@simonfelix9138]

The 3D layout was really helpful for visualising how the CMOS inverter might actually look in real life. Great work.

[@graychang99]

Thanks! My prequel video kzbin.info/www/bejne/h4KZiKVri6hmmKM explains electrons and holes, and for silicon crystal atomic structure see kzbin.info/www/bejne/lXKaoKSlgqt8n6M

[@lifewithuddhab]

This is the clearest video on CMOS Tech on KZbin! No wonder it has zero dislikes. Thank you sir! For clearing my concepts in 7 minutes what I couldn't do in 7 months XD

[@dreamofmirrors]

It is indeed very clear

[@niooshaa]

For sure

[@rubelhalder5023]

i have almost seen 10 to 11 videos in youtube about the 3d modelling of CMOS, but this video cleared all the doubts..thank u sir...😊😊

[@parikshitramchandrasahu2045]

Thank you very much for these visuals. Until now I was just mugging up things for CMOS but now i clearly understand what is actually happening inside. Great work!

[@javidshahmuradov7253]

Many thanks for detailed explanation. Only after your video it was clear how Input and Output for logic gates works. Even after several times reading Harris and Harris book, it was really challenging to understand the current flow.

[@graychang99]

Yes, the Harris & Harris book works well as a reference -- it has all the information you need in compact form. The video is more like a college lecture, giving you time to digest the basic principles. In a good college course, the lecture and textbook are complementary.

[@SalahuddinTariq123]

Excellent work and explanation. These devices should always be explained with 3D drawings.

[@mab7727]

Governments spend millions on universities, just for a guy on youtube to beat the shit out of them .. Great video, ty!

[@timgraf7933]

Ok thank you, i never understood why the PMOS gets conductive when you apply 0V at its gate, allways thought you need a negative voltage, but thanks to your video, you only need a negative potential difference between source and gate. (source is connected to bulk).

[@emirhandemir3872]

I wish I could like this video again! Amazing explanation and amazing view!

[@graychang99]

Thank you for leaving a comment! Check out my related videos on electrons and holes kzbin.info/www/bejne/h4KZiKVri6hmmKM and silicon crystal atomic structure kzbin.info/www/bejne/lXKaoKSlgqt8n6M

[@ruizeng2374]

Thank you! I finally learnt the CMOS technology!

[@Nadox15]

Thanks for this great Video, I have one question! I have a computer science background and still struggle with basic concepts like current. In 5:20 (Input=1V) you say "A conducting path connects 0 Volts to the output. I have a hard time imagine, what does 0 Voltage mean? Does it mean no current is flowing at all? Or just a small amount? I think i have a problem with the concept of a Supply of 0 Voltage (nmos) which creates a conductiv path to the output. If basically nothing gets "pushed" (electrons) how can there be a flow of current?

[@graychang99]

See if this video helps: kzbin.info/www/bejne/gqfTkJSVf9B3aNE

[@agoohoo]

This tutorial is very easy to understand. Really helpful, thanks for sharing!

[@wisdomkhan]

Amazing amazing animation and explanation. Thanks a lot.

[@leonhorvat]

What a beautiful and genial explanation! 1000x thx :)

[@Skall-ex]

Extremely good video. Finally understood some things about this confusing goddamn subject, lol.

[@amanagarwal4007]

Thank you for the wonderful explanation .Great animated visuals👍

[@shuailics]

Great work

[@pacaya_and_bears1088]

This is gold, thank you, sir

[@HR-pz7ts]

Thank you you're a legend

[@aishwaryaherakal]

The bestt video...❤️

[@NathanWickenheisser]

Awesome video! I have one question, and I am relatively new to this, but can this be used to switch between two different power sources? Instead of having 0V and 1V as an output, could it switch between voltage levels from two different battery sources using one control voltage? It would be like an SPDT switch. I want to avoid using a relay or 4 transistors in an H-bridge setup. Thanks!

[@graychang99]

No, the CMOS inverter is just one tiny component among millions in an integrated circuit. You're looking for discrete power components. You seem to know a lot about them.

[@goldendragon776]

very informative video~ I need more time to digest it😅

[@davidcervinofungueirino2914]

Amazing explanation. THANK YOU!!!!

[@ccango]

Awesome, great explanation. Thank you so much!!

[@modern_age001]

Very practical and useful

[@huiwencheng4585]

Really helpful and clear

[@rudraram5848]

Where resistors and capacitors are connected in this?

[@graychang99]

Resistors and capacitors are not involved in CMOS inverter operation; there is no need for them. However, there is parasitic (unwanted) resistance in the semiconductor materials and parasitic capacitance in the P-N junctions that slow down switching between the 0 and 1 states.

[@arturorodriguez6580]

Super nice video! I was wondering what's in between the substrate and the metal connections? It looks like there is some gap in between but this has to be filled with something in a IC, right? Thanks a lot!

[@graychang99]

A hole is cut through the oxide and the metal connects directly to the silicon. In some cases extra dopant is implanted/diffused into the silicon where the metal makes contact.

[@arturorodriguez6580]

@@graychang99 thank you! So basically SiO2 is isolating all the connections

[@graychang99]

Yes. To keep the diagram simple, I didn't show the SiO2 on which the metal connections are resting.

[@arturorodriguez6580]

@@graychang99 it was a great video! By far the best one I've seen

[@nantes9807]

Sir you save my life

[@JiaxingChen-rt5dn]

negatively charged acceptor and positively charged donor ? donors are n-type impuriry and negatively charged

[@graychang99]

A donor atom donates a negatively charged mobile electron to the conduction band. The fixed-in-place donor atom becomes positively charged when it loses an electron.

[@riaank.4585]

Isn't it also very important to distinguish between depletion and enhancement type MOSFETs here? Otherwise very good explanation! Thanks

[@josefiel6842]

Great content, congratulations!

[@doriajohn3915]

THIS IS A GREAT VIDEO!!!

[@castimann]

Great job! Thank you!

[@antoninmeunier5323]

This video rocks !!

[@tobias7252]

Mega cool, greetings aus Germany

[@hejoshua4170]

How can I get these pictures, I need to make a presentation on CMOS, thank you

[@graychang99]

Freeze the video and use any screen capture program. Please give credit to the source in your presentation.

[@rohanyadala9096]

Very nice

[@opus53waldstein70]

Thank you 😆👍

[@mikewosowski342]

I don't know anything

[@graychang99]

The DESCRIPTION section provides a little background on N-type and P-type silicon. For more background information, you'll need to consult Wikipedia or your textbook.

[@graychang99]

Check out this new (2024) video on electrons and holes kzbin.info/www/bejne/oWKnipd_i82ZnMk