Zener Diodes

This electronics video tutorial provides a basic introduction into zener diodes which is used as voltage regulators in DC circuits.
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Power Dissipation In LEDs & Diodes:
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Potentiometers - Variable Resistance:
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LED Dimmer Circuit:
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Thermistors - Temperature Sensors:
• Thermistors - NTC & PT...
Voltage Regulators - Zener Diodes:
• How To Make a Voltage ...
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Power Zener Diodes - Voltage Regulation:
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Reverse Polarity Circuit Protection:
• Reverse Polarity Circu...
High Voltage Surge Protection Circuit:
• High Voltage Surge Pro...
AC DC Polarity Tester Circuit:
• AC DC Polarity Tester ...
_______________________________
DC to AC Reverse Polarity Circuit:
• DC to AC Reverse Polar...
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• Voltage Controlled Cap...
Final Exams and Video Playlists:
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Full-Length Videos and Worksheets:
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Zener Diodes: amzn.to/3icv8dB
Resistors: amzn.to/3B2jPNM
Alligator Wires: amzn.to/3icvnFx
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[@TheOrganicChemistryTutor]

Final Exams and Video Playlists: www.video-tutor.net/

[@isaacudoumoren505]

So i spent 5yrs at the University and no lecturer could do what you just did in few minutes. Bravo to you.

[@gordthor5351]

You are a great teacher. You explain things concisely, clearly and in the right order to make it easy to understand.

[@eliadekiraly2500]

hello, i am a student in avionics systems and have found it hard to find any good explanation but must tell you that this is by far a very good explanation, thank you very much for the video, i will certainly look for more on you're channel.

[@sambhavkumar3865]

O_O i am a student of class 12th in india ( amazing that 12th study is used in engineering )

[@bummerboomerx]

thats why everyone studies in school till 12th grade. we even use addition and other basic mathematical operations in higher studies that we learnt in 1st grade@@sambhavkumar3865

[@Kad1nat]

Really cleared up the mystery surrounding zener diodes for me. Really appreciate the vid!

[@lawrencebaxter9448]

Current flows from negative post of battery to positive post. In a Forward biased diode, current flows against the arrow. You're backward in your theory.

[@user-wc6pp4mi6t]

@@lawrencebaxter9448 this uses conventional flow, + to -

[@clarkgriswold5842]

I've been confused with this topic for weeks...read the whole chapter too, still left me confused. Professor himself was confused what he was doing. Your 11 minute video cleared that all up. Thank you!

[@StrsAmbrg]

I was studying electronic 20 years ago and I didn't like as I didn't understand. Now I try to truly understand by searching in this KZbin, and I now understand it very easy.

[@Peter_1986]

My Electronics course uses the book "Microelectronic Circuits" by Sedra & Smith. I am not really a fan of that book, since I find it dry and long-winded. I tend to prefer "Fundamentals Of Microelectronics" by Razavi - it's not QUITE the same content, but it's very similar, and includes typical topics such as diodes, transistors, small-signal models, rectifier circuits, and so on. It doesn't include zener diodes though, but it has a teaching style that I definitely prefer over Sedra & Smith. And also, Razavi himself has tons of videos on several Electronics courses, and has a pedagogical style much like The Organic Chemistry Tutor.

[@PunmasterSTP]

Thanks for helping us to rectify our misunderstandings! All of your videos are wonderful, and thank you so much for making and sharing all of them.

[@ghaznavipc]

such a calming, informative and easy to understand video about Zener diodes. Step by Step guiding us with a relief

[@purplehazeto]

Your methods of explanations in basically all your videos have carried me in my courses of electrical / electronics theory. Thank you!

[@laser679]

Test in 4 hours and this is a savior. Thank you!

[@maxwellmc9734]

Hope you're test went well..

[@venkatgollangi8962]

@@Aspiringactor02 are you sure xD xD

[@PunmasterSTP]

How’d the test go!

[@billguitarvin]

Thanks so much for making this video! I was unclear what would happen when 2 diodes are placed back to back and your explanation made total sense. All the best to you and take care!

[@mogaolimpiu7190]

i have an exam in 2 days, this cleared up alot of things, thank you

[@PunmasterSTP]

How did your exam go?

[@PunmasterSTP]

@@bojangorgioski6353 Yeah that makes sense, but I’m always curious to know. I started replying to “Thanks, I have an exam coming up!”-type comments a while ago, and it’s led to some cool conversations…

[@davidcuervo3160]

1 hour for me

[@keshosingh5645]

Dear Sir, you are a genious bcause despite being a organic chemistry tutor you know everything about Electronics which is totally different discipline

[@rashidselemani475]

I’ve already noticed that people who have this kind of voice, the way the explain stuff is outstanding. I think about Brad Traversy.

[@wowfacts37]

For the first time in my life realized about the zener diode🙏🙏🙏❤️❤️❤️

[@stoleneyesss]

Same here 😀

[@yosefdiriba182]

I'm sure my teacher didn't teach me but you teach me . you are good teacher . God bless you.

[@sand451]

If you are NOT in some school teaching, someone is not doing their job correctly.

[@chitra___]

KZbin is a school, and he is certainly teaching.

[@Jas-fp4wq]

Perfect !!! No other video can explain zener in such a simple n perfect manner Simplicity rocks 🎉

[@DavidMARs16]

Its the best chanel on youtube for clearing concepts . Hats off😍😍

[@esdeathshoko5731]

Who is this guy,i have seen mulitple subjects and all of my problems are solved just by one guy,how much knowledge does he have haha

[@Kristina20233]

Fantastic explain .. my first teacher in IT engineering collage❤

[@peted9205]

Good video on the zener diode Given the high voltage noted in the DC 50V example, you should have spent a moment to discuss P=I*V and the importance of the power ratings of the resistors. Some novice viewers might replicate this circuit on a breadboard using an improper 1/4W (.250) resistor and be alarmed by the magic smoke.

[@RonaldoEuSi]

youre content is life saving, THANK YOU!

[@TheBluBrawler]

Thanks for the videos. Very easy to understand. Just started getting into electrics and this is very helpful.

[@kalebthomas28]

I wish you were my professor. Your videos help me a lot.

[@onurolce]

A very good lesson, even for someone with a weak English like me...

[@pepe6666]

thanks mate this was a great video. nice to see it in the basic series circuit and then put into AC like that. i think the order you showed things is just the right way to do it. this is going into my permanent stash of educational resources

[@darthvaderlxxi1233]

Althouh Zener Diodes are a bit old-school, they do have some modern applications. Back in the 80's, I worked on the first Transatlantic Fiber Optic Cable (TAT-8). It had repeaters every 25 Kilometers or so. The power for all the repeaters was several thousand Volts with each repeater having a Zener of the Voltage needed to power the Repeater in series with the Power. Think of it as a High Voltage supply with a string of Zeners in series with the output, each repeater having it's own Zener with the voltage and current being taken off across each Zener. Quite a simple setup, but it worked quite well.

[@ISpeakZ25]

The zener diode serves as a voltage regulat. If the input voltage is less than the Zener volatge.No current will flow ❤

[@wsg4847]

How come college professors in engineering can't explain this clearly? I know, it's just a rhetorical question.

[@maskedmarvyl4774]

They take special courses in making clear subjects unintelligible.....

[@JohnnyZag]

Мне казалось, что такое бывает только в России. Я ошибался :)

[@rozwell69]

To be able to easily explain something, you must first fully understand it yourself.

[@StrsAmbrg]

@@rozwell69 Einstein said, if you can not explain clearly, you don't understand it very clear.

[@Triggs-Music]

I always see comments like this. And I always think.. then you've seen it once before then if you mention school. If you (someone) went to college with out any knowledge of the subject beforehand of course it will seem like they didn't teach it to you. Not that there aren't bad jobs done at colleges etc, but don't discount that you have to familiarize yourself with subjects before you can try to understand them.

[@alro7779]

So, in summary, can we say that a Zener diode acts as a voltage regulator?

[@OnojaifeChukwuemeka]

Yes

[@sanskarshrivastava4698]

Yeah it's called voltage regulator or breakdown diode

[@pierrearena6313]

Thank you very much from France, I had on one of my schematics at te output of one op amp 2 Zeners back to back as you show at the end of your video and I was wondering wat they were for, and now I understand Thank you so much keep going the same way.

[@mohjueidi7508]

Hello I assume the source of AC signal should be 40v pp to get this output. Otherwise the outcome would be 12.6v pp.

[@anuragyadav_8572]

I wish I found you 2 years ago so that this day would be different I was not afraid of this day so that I was not scared of what is going to happen next . I wish I found you before and thank you for what you have taught me still in 6 months

[@Lithium50]

Thank you very much. That last circuit explanation helped me a lot!

[@daviddelaney363]

I am reluctant to subscribe since it seems all online pay subscription offerings make it very difficult to unsubscribe. But great videos, great channel!

[@ISpeakZ25]

Resistance Voltages The voltages in the circuit have to add up to the voltages of the battery So in Example 3..It will be 50V-12V=38 V

[@EyesofOd]

my university should be giving you my tuition. professors are garbage. thank you so much. my lecture on this after never seeing a diode, was literally... "ok well, theres a voltage and a current, and its really quite simple lets move on" no examples, no explanation of anything. without your help i dont know what i would do.

[@Automationacademytv]

Thanks for your video it helps my channel grow.

[@stevehoang5289]

Very clear explanation of zener diodes. Thank you.

[@amjadalhindi7350]

My favorite tutor

[@emilyhuang2759]

This video is made for dummies like me. Thank you n happy Thanksgiving ☺️

[@thulasimadhavan3763]

Awwww..... don't call yourself that🥺🥺

[@rogerraven6976]

Excellent tutorial. The zener is underestimated in the age of the parasitical 78XX and it's siblings

[@ibissaa9695]

You are Electronics god! Hoping you can help resolve my predicament. I have been desperately looking for an answer to WHY the voltage is constant across the diode? I have read and viewed every info possible including going deep into the science of Zener diodes but no one has explained the WHY. One of the reasons mentioned is that the diode regulates its internal resistance to maintain the voltage. How and Why does that occur? Can you please explain?

[@KiNGGaming-oq1uo]

Crazy awesome tutorials. Good job man ✌

[@yashnapa6012]

yoo you literally got every topic i wanted to learn. thanks

[@keithcitizen4855]

I made my own 2 amp regulator using a zener , saved buying a to3 cased lm 780x device, just have to stick to a fixed input and output voltage so not to over current the zener.

[@systemtechnix8924]

Thank you for a great video. You provided the explanation and formula for how one would calculate the current in the entire series circuit but how would you calculate the current in the diode versus the resistor?

[@myhandymanscott]

2:37 kinda blows my mind a bit. No current through the circuit, so I = 0, but 5v through the zener diode? But ohms law says v = i * r ? I was totally tracking until this point. Please help me understand what I'm missing. This is an excellent tutorial and already I now understand how a zener works to essentially siphon off a set amount of voltage from the circuit.

[@xorpe7172]

same scott

[@lightfury2286]

@Scott * Ohm's law is not applicable in semi conductor devices. * diodes when used under reverse bias do not let the current pass through it but when the reverse bias voltage exceeds the zener breakdown voltage, the current rises abruptly due to the high value of electric field across the junction which leads to breaking of covalant bonds of the atoms present at junction and many charge carriers emerge(set free) due breakage of the covalant bonds and a high current flows through the diode. But here zener voltage is 12 volt and the reverse bias voltage is 5 volt, therefore no breakdown will occur and it won't let any current pass through it and the voltage accross it would be 5 volt due to law of conservation of energy.

[@maddyinc933]

Try to think about it like this: imagine the current being very small instead of zero, let's say in nanoAmps. Imagine the zener diode as a resistance with a very high value, let's say in MegaOhms. And give the resistor a value of 1Kohm. Use ohm's law as usual, and it works fine.

[@simonmsiza6667]

Thanks a lot for showing me alone a difference

[@samir4587]

Very comprehensive and easy to understand.

[@wtfucrazy]

great video. you are a good teacher.

[@lazzy5173]

A great introduction to Zener diodes. Thanks a lot!

[@InterestsAll]

Thank you for Simplifying this for me. I Liked and Subscribed!

[@jackrubin6303]

I wish you were my lecturer 47 years ago!

[@FulvioGa]

Yes, I have learned a thing or two from your video!

[@skandanbharadwaj3288]

Thank you 😊 excellent and simple teaching 👏

[@cristiandanielpopescu4793]

Very good explanations,not very often seen on You tube..Thanks.

[@NoosaHeads]

This is an excellent tutorial.

[@ahoorapersia4698]

Well done 👏✔ Tnx a lot. You are the best teacher. 👌

[@goldenfairyautomobiles2325]

Good, if the out put is connected to a transistor base pin with proper connection then it will become a voltage regulator transistor, and also zener diodes were used for starting of electronic devices by feather touch switches.,pre determined settings for any comparator's also zener diodes were used, and zener diodes were regulating the complete globe in smps power supply put.

[@skabhirama9829]

this guy might actually save my end sems

[@kaputostain3833]

Thanks sir I really enjoy your lecture

[@atambaasiimwe9618]

my lecturer i love him

[@thestudentofficial5483]

I can't believe i took a week to read a book when it all can be compressed in 11 minutes (or even 7m 20s with 1,5 speed)

[@alipasa6650]

thank you for all

[@manarelbashier5944]

Your videos are very useful. Thanks

[@saarike]

Great tutorial video!

[@irmadion4904]

Really appreciate......the examples are very useful and valuable.

[@zide8433]

Ive learned more than one or two thank u so very much

[@irfanasaheen4010]

Good vedio to understand the zener diode in small time

[@successthruknowledge]

Great discussion of zener diodes; I wonder in a processor chip whether these zener diodes and thermistors are the major elements?

[@Hurtcules]

Beautiful tutorial!

[@Frost-01]

like damn ... i couldnt understand my professor ... but this, makes it look easier

[@vincef.8261]

This is cool! Thanks for the video!

[@veermehta6689]

Thanks, your a absolute legend!

[@georgiossouferis1463]

Excellent tutorial. Thank you

[@MrBdez]

Thanks a lot! That was pretty easy to learn this 👍🏻

[@julioalifiansyah4479]

Great explanation. Thanks a lot !

[@axelmeramas976]

great explanation as usual, thank you

[@hajibahadur4771]

Very good teaching style. What will happen if we don't apply R-1k ohm?

[@husseinal_zubaidi7737]

Man you took me through highschool and now through uni

[@mevinimunaweera9841]

Thank you so much for this.

[@Mandrag0ras]

If you were using a mouse to draw these, then I have to say, what a pro!

[@acruzp]

He's using a digital drawing board, you can hear it.

[@andybladen9284]

This is great and very understandable

[@ShinmenTakezo1234]

And the channel's name is literally Organic Chemistry Tutor...

[@Exquisitetutorials]

Thank you sir. Sir pls what if the zener diode was in forward bias

[@derofromdown-under2832]

Very well presented... 10/10

[@nixonhoover2]

G'day mate, OZ! OZ! OZ!

[@victorianjeri9234]

This video helps even highschool students in Africa to understand

[@mohamedyoussefskaik]

They are smarter than you

[@avisekjena]

Very well explained. One question though, the clipped wave in the end will peak at 12v, or Vs - 12v? And would the graph be 2 curves, peaking at Vs - 12v, separated by a gap?

[@Tinybench]

Amazing video!!!! Absolutely fantastic!

[@duanethompson2360]

I was hoping you would cover voltage shifting with the zenier in series in the secondary of transformer to drop its voltage by the zenier value. I work with Tube amps a lot and the mains used to be 110ac, now there 120+. I was thinking of adding a 10v zenier in each leg of a center tapped secondary to drop the high voltage.

[@michaelclark3667]

You are brilliant! Thank you!

[@rickbronx8528]

Very good explanation. Thanks

[@balagurunathan3005]

clear explanation thank you sir

[@williampugh6699]

Great explanation, thanks.

[@chrish7583]

When looking at these problems, are we looking at hole flow, or are we looking at electron flow? Basically, will the current flow through the resistor first, or will it flow through the diet first?

[@arushigupta2722]

Dude u r awesome !!!🔥 Thnks a lot man💙

[@fredgarvin4482]

Help please: at one point he says as the R (L) goes up the current through the load increases. I know this is a correct statement but I am having problems understanding why current would increase with higher resistance. This opposite of normal intuition and how things normally go. Also why would current go through the load at all when it can just go through the zener diode. It is like if you replaced the load and the zener with two parallel resistors, the lowest resistance will have the most current flow. Here it seems flipped.

[@ISpeakZ25]

Circuìt Current Current flowing in a circuit V=IR 2=(1000 ohm )(I) I= 2 m A The total resistance is by the Resistor and the zener diode doesnt contribute to that resistance

[@masbro1901]

Q. what is breakdown voltage for reverse bias for normal diode?