Let's talk about comparators

[@westerngodzilla]

Please do more of this! Merry Christmas

[@michaelhyde9971]

Merry Christmas. Thanks for all the hard work making all the videos

[@learnelectronics]

Thank you, same to you!

[@sargetester99]

More comparator circuits please!!!

[@keithking1985]

I love that little chip kit im going to look for it in a while... get me self one for X-Mass!!

[@robosapien314]

Please do more of this stuff!!! It's awesome!

[@timothychristensen2205]

I have been looking for this circuit for a week now but I never found one that was explained in a way that I understood thank you so much for this piece of information

[@drunkenastronomy]

Merry Christmas. Would be awesome to see more vids on all the ic's in that box. I have the same kit!

[@lelesecchi6140]

Happy Christmas! Where did you purchase It?

[@drunkenastronomy]

@@lelesecchi6140 looks like its out of stock: www.amazon.com/gp/product/B07V1PKDZS. Paid 25 bucks for it a couple months ago.

[@barry2718]

The resistive divider should be monitoring the battery voltage . When the battery voltage drops the divider voltage will also drop. The potentiometer should provide an adjustable voltage from a reference voltage. Use a zener diode around 6.8v or better still an TL431 voltage reference. You could even use a LED fed by a constant current source as a voltage reference but watch for temperature drift.

[@hafizmuhammadumer10]

Connect a male banana plug with an aligator clip and you can use it as a multimeter probe. Banana plug will go into the multimeter and you can clamp the aligator clips anywhere.

[@leadfoot1131]

Nice one ... Merry Christmas & Happy New Year from the UK ...

[@christerbergstrom8081]

Yes was looking for the tip caps. Thanks

[@josephcote6120]

One comparitor project we did in school was to make a mini bar graph voltmeter with a multi-node divider and a half dozen comparitors.

[@webslinger2011]

Nice! How about a step up 5V boost converter for 18650's?

[@doughankins3996]

Hey man! Thanks for this video! My daughters and I just built a circuit to help us know when our drone battery is charged!!! We're all very excited. This has also given me a brand new excitement for tinkering with electronics again!!! Great job. Keep up the good work!!

[@philowen2755]

Definitely more please Paul. Merry Christmas from Wales.

[@tomnoyb8301]

Comparator circuit: Relaxation oscillator with at least three decades of frequency (1-100MHz?) and adjustable duty-cycle? Fast edges? If that's too easy, add adjustable low-power (zero mean drift) Gaussian noise jitter to the oscillator frequency? 0-10%?

[@gunnaralv]

You explain things so straightforward....

[@zonnig46]

I have seen that the led was flashing when you turned the potmeter half the vcc. Strange. Thanks for the great video and happy newyear from Amsterdam, The Netherlands.

[@linuxman0]

It would be neat if you could take two of these and turn one on at the peak of a voltage and the other on at the "valley" of a voltage or to even do this with a digital input.

[@williammiller7543]

Merry Christmas. Great video. I'm mainly a SW hack but it is very interesting to see what and how these components work. Thanks and keep up the good work.

[@ATOM314159]

Great video, I love op amps and comparators and I've been making a similar low voltage cut off protector circuit. My only issue with your design is wouldn't the control voltage across the divider drop as the batteries drain? And wouldn't it end up always being the same voltage difference compared to the potentiometer as they're both essentially voltage dividers? In my circuit I used a zener diode to get a steady voltage to then compare with a potentiometer output, what are your thoughts on this?

[@samk2630]

Thank you for this, and the follow up video. I've been trying to figure out a simple circuit to turn off something once a voltage got below a certain threshold.

[@Electronzap]

Nice! I was just thinking of buying that IC kit even though I already have a lot of them. It's a definitely great gift (or self purchase) for someone who has components but doesn't have many integrated circuits yet. Nice jumper kit too.

[@Apollo-p1l]

I like the pinouts on the lid. Very helpful. Are they on ebay?

[@Electronzap]

@@Apollo-p1l Yeah! Pin layouts are great. Component sellers are way too stingy with providing info like that. I don't see it on Ebay. I did find it on amazon while search "integrated circuit kit" but only 1 left. I bet it sells out and it takes a while before they restock, but then they will stay stocked after that.

[@learnelectronics]

Amazon

[@Apollo-p1l]

Thanks to both of you, will take a look.

[@pulesjet]

Well dang that is a handy looking little kit of Ops and Amps. I actually have a Need for a few of these circuits for my Solar / Wind Power Wall. I will employ them to Stitch Relays directing Power away from the Battery when filled to be used for other purposes.

[@timwsac]

Great video Paul and lots more like it because I can understand them Christmas Wishes from over the pond

[@davidluther3408]

GOOD PRESENTATION,PLEASE DO MORE ON COMPARATOR CIRCIUTS

[@borayurt66]

Nice jumper cable kit... How about a link on that?

[@rolandberendonck3900]

Merry Christmas Paul! I love it when you make these little projects and especially explain them in a simple way so we can understand what's going on. My request is: Can you make something with the UC3842 or the UC3843 chip? It would be nice to make a little 9 Volt power supply from it which can be powered by a few 3p or 4p lion cells. It would also be practicle because we can use it to power our JVYTech DSO 150 which would be nice :) And maybe you can also tell us the secret how an additional simple circuit can prevent that the lion cells will be used below 3 Volts. And maybe the MC34063 chip is also applicable if this needs less components which would also be nice.

[@learnelectronics]

I'll see what I can do

[@rolandberendonck3900]

@@learnelectronicsThanks, I like it! :)

[@jdean399]

Great video, useful breadboard circuits and how they work are my favourites,thanks for you hard work

[@carldavis8228]

Nice job Paul. Do this with a schmitt trigger. One more interesting circuit would be an digital potentiometer.

[@jamest.5001]

Merry Christmas, and thanks soo much for all the videos , for ALL the knowledge, I truely appreciate it, I'm hopefully getting to where I CX an show it a bit, anyway thanks again!

[@da1otta]

This was really cool! Thanks and Merry Christmas :)

[@tyletgoodrch7853]

I would like to learn how I could wire a comparator to signal a low fuel light to illuminate. Would that be a video that you could show me ?

[@steveu235]

How about a voltage comparator and voltage divider that an be used for a cnc plasma torch height controller

[@StevePilgrim2013]

Another really useful video. I hope to really dive in this next year - finish equipping a bench, start building & relearning electronics know-how. Thanks for your channel & expertise. Merry Christmas! 🎄

[@worstuserever]

Yes, more of these breadboarded demonstrations please, especially based around the function of an IC in common use. Going to have to get myself one of those IC selection boxes. Have a great Christmas. ⛄🎄🎁

[@robertcarlton8712]

Sorry if anybody asked already. Is a 393 considered the same as a 311? Thanks.

[@kareemnurse6576]

I really enjoy your channel i must say My question is what is the best starter kit to get in electronics?

[@michelforget3638]

Yes please, do more and a merry christmas to you too☃️☃️☃️

[@4priusnt]

Did you provide links for the items you used in this video???

[@bartonstano9327]

Please do more of comparator circuits. Also what are the part numbers of the items used today and where do you order them from?

[@Z3R0-CoR3]

i tried this on tinkercad breadboard simulator, but the output is low 3.33mV. LED ofcoz doesnt light up. so where did i do wrong?

[@georgechambers3197]

More quality stuff from learnelectronics. Very cool circuit, I'd certainly like to see more. Happy Christmas and Merry New Year to you Paul!

[@paxpox7779]

Looks like your circuit oscillates near the threshold. Show how to stabilize the circuit with positive feedback using capacitor and/or resistor. Use resistor/zener divider as reference instead of resistor/resistor divider.

[@georgestewart5879]

Another interesting vid Paul, would love to see more using all of the ic's. Hope you have a great holiday season.🎈🎈🎄🎇🎄🎈🎈

[@michaelpadovani9566]

Great circuit and i would like to see another follow up...perhaps a small battery power arduino controlled sensor to include actual battery voltage monitoring.

[@richard1113]

Always wondered what a comparator was for and how it worked. Thanks! Also love the intro message today. :)

[@gregcash223]

Can one make a negative input from two buck converter connected to a common power supply? My thinking is that it can not be done, but I'm not positive. Pardon the pun.

[@RoyAndrews82]

Awesome video. I'm trying to make a circuit where the battery is cut off when the solar panel going into the buck converters output voltage falls below. Could I send all the outgoing current/voltage coming from the solar panel into a capacitor and then measured that voltage on the capacitor on the LM324N ? Because capacitors are really affected by current.. ? Is basically an empty space in the middle of a capacitor.

[@dreamyrhodes]

I would like a box of IC selection like you have. Do you know where to get them? (Europe). Trying to get chips from China right now but they are stuck somewhere in the delivery for more than a month now.

[@noobface777]

Great video! Merry Christmas!

[@charlesklein7232]

can you do a video on the electronics needed to create an ION drive! people show how to build one but they then hook it up to something and dont explain what it is. in particular one person uses a battery for a small 12 inch boat. you use something called a VARIACK? and then some type of transformer? but i dont see how this could be in a little boat.

[@batticha462]

Where to get this pin table on the LMxx box?

[@davidprice2861]

Hey there Paul, have a very safe and enjoyable Xmas, thanks for all the entertaining, informative videos you do with your not too serious, humorous style, I really enjoy them, cheers.

[@allabouttech5689]

Is it possible to add thermocouple to this comparator?

[@wynand988]

This makes no sense, are you saying you need an extra power supply to monitor the voltage of the batteries?

[@3deeguy]

Watching op amps demonstrated in circuits is much more helpful than simply listening to math formulas.

[@jcr723]

Nice video. Kinda knew what a comparator was, but now for sure. Sorry, this has probably been asked before but can you share the vendor or model of those pointy probes that fit in breadboard holes? I teach simple breadboarding to HS students and these would be very useful.

[@learnelectronics]

Probemaster

[@Inquire98]

"Good", very good 😉 I would like to see more troubleshooting circuits 😎

[@MCsCreations]

Really great stuff there, dude! 😃 I need to use more my protoboard... I need to solder pins to some of the boards i normally use, to do that. 🤔

[@Robbrown92]

Does the LM393 work in the opposite direction so for example if I have a 12v battery I want the output to be off, but when the voltage goes above 14v the output will be on

[@christiannielsen3863]

I want you to do one big project where you use as many Classic circuits you should know about. As a series. And no more LED's. Thats what I want for Christmas ;-)

[@christerbergstrom8081]

Thanks, man. Like to watch your stuff. Stupid moi perhaps but just wondering: If using this for monitoring low voltage in eg 18650 batts; then when you have a certain input voltage and that drops, well so would the ref voltage... So would we need 2 separate sources..? Cheers/Christer

[@sshannon1948]

Pin 3???? Not shown on pin out

[@mikeoliver3254]

Great video Paul, I love these circuit building videos. Where did that cool chip kit come from, I would like to buy one? Merry Christmas Paul and have a happy new year.

[@darrenclark6552]

Are comparators a better way to go than using an op amp wired s a comparator?

[@eebaker699]

Great! Could this be used in an Overvoltage protection circuit?

[@erfmedeiros]

Where can I buy the ICs kit?

[@lelesecchi6140]

Where did you purchase the IC kit? Happy Christmas!

[@learnelectronics]

I didn't, it was sent to me.

[@Ilikeridin]

Excellent video, thank you. That’ll come in handy for a recent project. So the battery source would need to go through the comparator circuit before feeding the microcontroller etc? I tried to look for that kit, any idea where it’s from? Thanks

[@floornot6834]

I dont get it.

[@briancazares7106]

Thanks for making the video more vid like this wold be helpful. where they purchase the box of chips? Also if not too much could include dwg we could down load and build?

[@charlesmarlin6632]

Well Done!! Very useful comparator circuit that has ( As you put it ) a C#@p Ton of other uses. Great Video!!

[@whitehoose]

Splendid little set, whoever makes those boxes must be a billionaire by now. I'm just practising for Wednesday - mince pie in right hand and a glass of sherry in the left - happy christmas Paul - and everyone else have a good one.

[@AThreeDogNight]

Yeah make some more, have a great one also.

[@weirdboyjim]

Nice video thanks.

[@MoHntr]

Merry Christmas!

[@keithking1985]

just noticed your meter probes looked like they were carrying voltage to the input when you were trimming the pot... just looked over the vid again and yes it did look like that way... cool.. merry Christmas Paul!!

[@sivoltage]

Really cool thanks.

[@md.mostafakhan4529]

Am I alone to almost always hear water falling sound in the background?

[@learnelectronics]

I have an aquarium

[@willyrivero470]

Love this channel! 😁

[@mouseyou12]

More Merry Christmas and Happy New year.

[@jcr723]

Just FYI...you have some dead links in your gear links (last 2 are dead, 3rd from last links to a "no longer available" product) That's all I checked so far

[@neilshobbyhq]

Great stuff Thanks

[@praveensagar3529]

Why this channel has less subscribe

[@WatchesTrainsAndRockets]

If the battery being monitored is the power source, how is the reference voltage established?

[@largepimping]

I believe the shortest answer is: swap out the potentiometer in the original circuit with a voltage reference (or zener, or voltage regulator) that is lower enough than the desired cutoff that it can still maintain stable output at that cutoff. Also make sure the resistive divider is adjusted accordingly - the ratio of the divider has to be the same as the ratio of the V ref compared to the cutoff. For ex., assume you want a 3V cutoff -- you can use a 1.5V Vref which allows you to keep the divider at 1/2 as in the original video. When the battery reaches 3V, the 1.5V reference can still maintain a stable output. At this point, the 1.5V from the reference is being compared to your battery's voltage divided in half, which is (obviously) 1.5V. OTOH... I'm a software engineer by trade, so I welcome any corrections from my EE overlords.

[@HelmutTschemernjak]

Another great video, thank you very much. A little schematic drawing would make it even easier to understand. Your basic videos are great for many viewers, continue this way. Thank you Regards from Hannover Germany

[@mwint1982]

9 people can't figure out the duty cycle for a 555

[@bud03038]

Nice video! Merry Christmas and Happy New Year! de WQ!I 73'S

[@jjab99]

Merry Christmas

[@protocolfree]

i love this , but what about the ADC !!!! man you're lettin one of your fans down !

[@insoft_uk]

More you do the more we will want.

[@neilshobbyhq]

BTW Have a fantastic Christmas

[@gregcash223]

Very nice!

[@gpeter7498]

I wish You Merry Christmas and hope for mutsh more You Toubes from You

[@elijahbachrach6579]

You sound exactly like One f Jeff.

[@hoosahfudge]

Awesome!

[@warrenking1815]

MERRY CHRISTMAS!

[@nhikoid]

great channnel!

[@christerbergstrom8081]

...sorry tip transistors