Pull up/ Pull down resistor - explained ( with calculation )

[@bobfurgenbirg9523]

Assuming 100uA as in your example, you would use a 10K not a 40K. You only want to drop 1V across the resistor, not 4. Vcc - Vin / Iin. (5-4 / .0001) Don't forget different values of current for sourcing vs sinking inputs.

[@Gadgetronicx]

Yes you are right. Apologize for the error, thanks for pointing it out. Unfortunately KZbin has removed the annotation feature have added a card stating correction in calculation.

[@karenma7704]

@@Gadgetronicx i don't see the card

[@mahdilaloui711]

true

[@westleyphilip814]

I know I am pretty off topic but does anyone know a good website to stream new tv shows online?

[@trentondylan1281]

@Ezekiel Kole Yea, have been using Flixzone for years myself :D

[@ec11368]

you are the best one who did explain the pull-up and down resistor

[@kaoshavoc]

This video needs a few million more views. Seriousy. Everyone else just says, pick a big one if you want to soft pull, and a small one for a hard pull. This gave us the reason, and the math, even though, as soon as you said it, I realized, I should have seen that before hand. But, you know, most people teach you these circuits with ideal circuits in mind, so I had never thought about the input making a voltage divider, because well, when most people teach you, they say that inputs take no current, or so little you can discount it. While that is probably true most of the time, at least now I know how to properly pick a pull up/down resistor. You earned my subscription. I hope your channel does very well.

[@Gadgetronicx]

Thank you for your kind comment and subscription. Will continue to create more informative videos.

[@swedishpsychopath8795]

This is the best explanation on youtube! Not only did you explain the problem - but also showed us how to calculate the different resistor values depending on the range of the expected logic level. Nicely done, Sir!

[@anythingunderthesun9930]

Great explanation and easy to understand! Keep up the good work! Thanks! You need to lower the volume of the background music to 10% of your vocal though.

[@mahmoudkortas]

music too loud

[@Gadgetronicx]

Mahmoud Kortas Sorry will take this feedback :)

[@augustkravtsov]

I never understood the use of music in those type of videos. It appears so pointless to me.

[@mkaberli]

That and the speakers talks too fast. Not enough time for slow minded people, like me, to absorb the information.

[@pjandryanadventuresruntime7692]

@@mkaberli you can slow down the video speed in you tube settings, I always speed them up or down depending on delivery of the author

[@ksawery6568]

Nah it's perfect, just turn down the lights and bring out the neon sticks

[@AB-yu2tj]

Thank you, your voice and this video was lullaby for me and thank you, for keeping the music volume down so I can hear the important things you're talking about.

[@Gadgetronicx]

You’re welcome 😊

[@decem_unosquattro9538]

Ah very good sir ! 😀 You are a great teacher! I watched a few videos before your video but I couldn't grasp the concept. Now I understand. 🇦🇺👋🏻🤔👍🏻 thank you sir.

[@PhG1961]

Great video/tutorial !! Thnxs for sharing ! Please turn the music a little softer for your next video.

[@imanqoly]

If you have to choose a teacher for anything you need to know, choose an indian one ❤🌸

[@Gadgetronicx]

Ha ha thanks

[@un-named6865]

You are a brilliant human being. This is by FAR the best electronics video explanation ive ever come across. Thank you very much!

[@Gadgetronicx]

Thank for your kind feedback :) Kindly subscribe to our channel

[@rezanouri7532]

one of the best explanations, thank you... :) It 'll be even better if music was in low volume! Thank you again for this wonderful explanations.

[@ags-engineering5544]

Thank you ! This video explains the use and application of pull up / pull down resistor clearly.

[@michaelmedioli5975]

Nice video you explain in a clear way the arguments thank you a thousand times👍

[@shivar8023]

This will be the best video, if u have avoided playing bg music👍

[@Gadgetronicx]

Thanks for the input Shiva

[@bpelectric]

Great content, but I really wish you could make the voice a little louder/clearer and the music more quiet.

[@Gadgetronicx]

Thanks for your feedback :)

[@tomasrosenberg3430]

Terrible music, great explanation! Thank you!

[@fajri8058]

Your video answer all my question about pull resistor... Thx..

[@Gadgetronicx]

Glad I could help

[@josephmitchell1450]

Despite of the music, the content is great

[@yanxiaosun4363]

good tutorial man! but at 3:54, why is 3V and 2.5V combination an undefined state? Isn't this a logic high in TTL? or does it mean that induced voltage could vary rapidly and lead to 0.8-2.0V zone voltage?

[@omaralharran]

Thank you for explaining this topic in depth. :)

[@sohamthaker]

This is a very good explanation but what it doesn't explain is that why there will be a drop of 1 volt? Usually for voltage to drop to a certain extent voltage divider is required. In this case a current of 100uA with 5V means the current is limited by a 50KOhm resistance. Hence if we want the current to remain 100uA, and a voltage drop of 1V, then we need a voltage divider of 10KOhm:40KOhm. The 40KOhm is assumed to be the internal resistance of the Gate. Then voltage drop will be 1V across the 10KOhm resistor.

[@tylerrussell7560]

I had to watch a few times (I'm slow at learning new things), but I finally got it. Thanks!

[@Gadgetronicx]

Welcome :) Kindly subscribe to our channel for more of these tutorials

[@meetpatel8197]

thanks sir for making this type of video it clears our fundamentals

[@Gadgetronicx]

Welcome :) Kindly subscribe to our channel for more of these tutorials

[@Jimmyverity]

Video feels like iam driving super car with music while I learning pull up resistor

[@VirendraBG]

Slow down, slow down. You are too fast for non electronics guy. Too loud background music.

[@Gadgetronicx]

Thanks for your feedback

[@JustinShaedo]

You can adjust the speed, pause the video and rewind. If you want to learn from any KZbin videos then this is an essential skill. Genuine respect to you for learning. Now take a modicum of responsibility for that learning as well.

[@CadyCuties]

Can you reupload this video without the loud background music?

[@richardpope9985]

Wow .... I completely understood that. Great job !!

[@mahimas2804]

The video was good and very effective,but could you please reduce the volume of the background music as it was quite difficult for me to listen to your lecture clearly... Thank you!!

[@Gadgetronicx]

Noted :) will improve in upcoming tutorials

[@shameerpkm]

Great Video and explanation

[@muhundans7788]

Great always confused, but got clarity with this topic

[@Gadgetronicx]

Happy to help

[@minhajshovon9789]

Cool edits and nice tutorial. Much helped!!!

[@Gadgetronicx]

Glad to hear!

[@magiclay]

hello do i need pull resistor even if the signal input comes from another ic sending out clock signal...or just use the pull resistor when is a mechanical switch?

[@alecdvor]

This was extremely helpful!

[@Gadgetronicx]

Thank you

[@SushrutKanetkar]

Nicely explained. Thanks

[@MIZKhalid]

Very useful and clear explanation. However, you should try to make ALL future videos without any background music. It is completely irrelevant and distracting.

[@parthpatel1605]

Nice vedio I was facing some EMI issues of false triggering of MCU becz i forget to put pull-ups in my switch input

[@tommyyhli]

Excellent explanation! Thanks a lot! But the background music is too loud

[@Gadgetronicx]

Thanks for the feedback. Will certainly improve in future videos.

[@dbanerjee2467]

Thanks for the explanation sir. Found very informative, to the point explanation. Thanks once again :)

[@fuzzs8970]

Thank you. Nice but I get dizzy trying to follow the quick sequence. Probably aging effect.

[@WahWahWeeWah]

I can't understand you over the music

[@sporech9374]

Fantastic video and explanation, nice job :D

[@Gadgetronicx]

Thank you very much

[@Electrologia]

The background music is so annoying :( ! can't concentrate

[@SathishKumar-if7ow]

Not something ...I learn lot of things from this video. Thank Thank You...

[@martinprinceton9858]

This was very helpful. Thanks very much

[@Thatguyyyouknow]

Great video, thank you for sharing

[@Pavankumar-qk5uv]

Super video,just I understood y to use pull up and pull down in a ckt after watching your video,great bro and thanks

[@Gadgetronicx]

Thank you Pavan do visit www.gadgetronicx.com for some other tutorials, circuits and projects

[@rajutharigoppula2890]

Great video

[@Gadgetronicx]

Thank you

[@mikevo5601]

informative video. Thanks

[@prashantwalkar224]

Can we apply this formulas for i2c communication resistors also? Or they are different?

[@Gadgetronicx]

Yes you can apply these formulas

[@ambientsoda106]

brilliant tutorial...

[@rameshc5302]

Great tutorial, even Software guys would be able to understand without much effort. Good job !

[@joeb.fromsydneyaustralia5313]

Excellent video... thanks.

[@Roottech25]

Good tutorial

[@fredkester6130]

Very clearly thank you very much. Is there a preference for pull up or pull down? With a pull up, the zerostate is to ground en with pull down you can calculate a small voltage?

[@Gadgetronicx]

Sorry couldn't get your question. Pull up mean to pull your logic pin close to vcc whereas Pull down mean to pull your pin close to ground

[@fredkester6130]

@@Gadgetronicx thank you

[@thomasldeanjr3337]

good explanation

[@彭珞洲]

Great tutorial, thank you sir

[@Gadgetronicx]

Thank you. Kindly subscribe to our channel. For more tutorials visit www.gadgetronicx.com

[@waynel1557]

Nice video, thanks.

[@Gadgetronicx]

You are welcome :)

[@harshitsangwan890]

Why are we using very high value of resistances ? Is it to avoid shorting through the resistors when the switch is in on state ?

[@dougsteel7414]

Very good explanation. Now please treat yourself to a proper condenser mic and more importantly acoustic tiles and a compressor/limiter 🤣

[@Gadgetronicx]

Noted

[@cutsdbz]

Great video, i have a quick question so i have a raspberry Pi 3 and i connect the pull resister of 4.7k and to the I2C Bus i have 34 devices that works well, when i connect the final 6, i start loosing data over the bus, does this mean i can lower my pull-up resistor to 2.2k so that i dont encounter data lost?

[@joshuamclean9345]

Awesome explanation from 3:56

[@Gadgetronicx]

Glad you liked it

[@pratyushpatel6224]

Excellent vedio.please Tell me which software you are using for making this amazing vedio

[@azcharlie2009]

Thank you for this! It was very helpful!

[@chamseddinebedhiaf5384]

Thank you very much for your video

[@sachinpawar9402]

It's educational video or music video

[@joshnak7860]

Your content is good,but please turn off the back ground music for the next video.

[@Gadgetronicx]

Sure will take this feedback.

[@majuran]

wow, nice explanation .... but why still low likes?

[@aakashdewangan7313]

Good and informative video. Thanks. Just remove that background music. Educational videos should not have those background songs. It distracts the viewers.

[@pepsiatlas5452]

huh. that was actually really helpful

[@Gadgetronicx]

Thank you Atlas :) do visit www.gadgetronicx.com for some other tutorials, circuits and projects

[@nedzadhadziosmanovic3785]

How will induced voltage of 3V on one input pin and 2.5V on the second pin (3:50) produce an undefined state. Earlier in the video you said that from 2V to +5V it should be logical 1, so why wouldn't this circuit produce a output of logical 1, rather than ending up in an undefined state?

[@rohanbhavsar6976]

Thank you I appreciate your hard work

[@Gadgetronicx]

You are very welcome

[@footballCartoon91]

next question would be .. what is the condition required to switch on the pull down/high resistor

[@mrwait417]

Good content

[@barneyboy7771]

Could not watch this, the music is annoying. No background music is needed!!!!

[@sagarghatti]

when you are out off syllabus then this kind of silly comment come into picture . like this comment on such good expatiation in this . i hope you understood . stop criticizing and appreciate thing .

[@Er_Shashank_Singh]

Pull up resistor value=10kohm,not 40kohm

[@subramanyann8663]

why a short circuit is not recommended?

[@manishankarveeranki1812]

Superrr sir....thank you

[@kkkk150984]

Can you calculate pull up/down register value for Arduino nano digital pin....it will clear better

[@sandiprupnavar1]

nice explained

[@Gadgetronicx]

Thank you Sandeep :) Do visit www.gadgetronicx.com for more tutorials, Circuits and Projects

[@pgalatioto]

Nice appreciate the breakdown, great discoteca music too

[@Gadgetronicx]

Thanks

[@Urfave937]

The content of this video was great. However, the music was way too loud, distracting.

[@sulaimanzakaria]

Got to know what i needed to know after much googling. Thanks. But in my humble opinion music is a big distraction. Educational content should be without background music. Its difficult to focus

[@Gadgetronicx]

Sure will take up this feedback :) Kindly subscribe to our channel for more of these tutorials :)

[@sahilmahajan5237]

thank you for the clear explanation, but the music was rly annoying and loud

[@Gadgetronicx]

Thanks for the feedback

[@ambientsoda106]

great tutorial

[@Gadgetronicx]

Thank you

[@ytrew9717]

but why do we need the resistor? Do we use it to avoid shortcut between the IO pin and the 5V? (but the IO isn't ground, so why?)

[@axx10m]

Thank you for the explanation. Glad I stumbled upon your channel!

[@lifeonagriculture3330]

I have doubt, How resistor will pull to +5V, they are not capacitor to hold current ? To pull to certain point of current from where they gain power ?

[@etzaiat3024]

Excellenr explanation although as the rest the viewers comment music is too high! Music was nice tho to party I like it as much as the explanation damn...

[@GauravGupta-pb8mk]

Thank you sir

[@Gadgetronicx]

Thank you, do subscribe to our channel. Visit www.gadgetronicx.com for more tutorials

[@deathtospi9072]

Very good explanation; But Sorry sir with all due respect @0:35 not only digital circuits or I.C. even in analogue circuits and even I.C.

[@MukeshKumar-di7nj]

Very useful

[@Gadgetronicx]

Thank you :)

[@kritidiptadatta5556]

Really helpful.. Thank you

[@Gadgetronicx]

Thank you, do subscribe to our channel. Visit www.gadgetronicx.com for more tutorials

[@arpithabasavaraju]

Tq u.. It was useful

[@Gadgetronicx]

Welcome :) Kindly subscribe to our channel for more of these tutorials

[@Ankit-mq6em]

What value of pull up resistors to attach to max30100 sensor ,can I use 2, 10k resistors or need to use 3, 4.7k resistors ??? Please help me

[@Gadgetronicx]

Whats the need for pull up resistor with this sensor. Which pin do you exactly mean ?

[@stevenrogersfineart4224]

What's up with the censor block?

[@nisri1567]

Good job, back ground music is tooo much. And try to slow down, reduce your speed.

[@sumuduasiri]

Thanks very much 🙏

[@user-mr3mf8lo7y]

Much appreciated.

[@veljko100able]

best explanation

[@YLprime]

if you speak a little clearer this will be a very perfect video

[@Gadgetronicx]

Thanks for the feedback will improve it :)