Zener Diode as Voltage Regulator (Part 1)

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Analog Electronics: Zener Diode as Voltage Regulator (Input Voltage & Load Resistance Fixed)
Topics Covered:
1. What is Voltage Regulator.
2. Zener diode in forward and reverse bias condition.
3. Basic zener regulator circuit.
4. Calculation of voltage across zener diode using Thevenin's theorem.
5. Calculation of circuit parameters when diode is OFF.
6. Calculation of circuit parameters when diode is ON.
7. Numerical Problem.
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Опубликовано:

24 июл 2024

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Комментарии : 259

@hansikagupta2161 6 лет назад

Thank you sir, your videos are very helpful. Iz=2.67mA,VL=10V, current across 1k ohm is 6mA,Pz=26.7mW

@junaidsheikh1938 8 лет назад

these are all the examples from BOYLESTAD's book . thanks a lot, because we read the same book in our university.

@ramjishivhare1238 6 лет назад

Sir condition for zener diode to act as voltage regulator is v(input) greater than v(rever bias of zener ) or mod of v(input) greater than v reverse?

@ramjishivhare1238 6 лет назад

Sir condition for zener diode to act as voltage regulator is v(input) greater than v(rever bias of zener ) or mod of v(input) greater than v reverse?

@vamsikrishna9825 6 лет назад

Ramji Shivhare The condition for Zenor doide to be act as an voltage regulator is that the applied voltage across the zenor diode must be greater than the rated zenor voltage so that we can get the constant output vz at load resistance. Hope u understand

@CelestialMpulo 6 лет назад

9th

@deepakpandey9935 5 лет назад

That book is so huge bro, I m even scared to see it😂

@ayushvats1808 5 лет назад

After long search on you tube I got it in ur video,,thanks sir bcoz kha kha maine tum waste kiya isko smjhne k liye jitta shi tarike se aapne step by step btaya was really awesome

@marlon123444 6 лет назад

I've been following your lectures since last year. Thank you sir.

@lutfunnaharasha7814 6 лет назад

VL=10v,VR=6v,IR=6mA,IZ =2.67mA,PZ=26.67mW. Thanks for the awesome videos😊

@Ravikumar-so1bi 4 года назад

Can u give clear explaination please

@SaifAreqi Год назад

@@Ravikumar-so1bi Vz= 10 from the question

@thecalm_soul Год назад

Detailed solution please.

@AdityaRaj-gj4dl Год назад

@@thecalm_soul If we consider load is equal to 3K ohm then calculate Vth. Vth is 12V. Since 12 > 10 zener diode in breakdown region.Since Zener is a voltage regulator voltage across load will remain 10 volts only.Use Nodal analysis. IR =(16-10)/1000= 6mA. Since Voltage across load is 10 volts, IL =10/3k =3.33m. Apply KCL in order get current through zener diode Iz=(6-3.33)mA=2.67mA. Pz =(Iz*Vz)=2.67*10=26.67mW.

@AdityaRaj-gj4dl Год назад

@@Ravikumar-so1bi See the above explanation.

@tasfiaaminchowdhury2561 6 лет назад

Thanks for these awesome videos .. these are really awesome and really helpful for us .. like for the night before the exam ..

@alfredcalleja450 6 лет назад

Another clear and concise explanation. Thank you again.

@shubhamrajput2667 7 лет назад

hey I have doubt! how will u replace diode with zener voltage (if it is sufficiently reversed bias)? what will be the polarity

@alterguy4327 7 лет назад

It was Clean and Clear.Thanks Neso Academy

@preetamkumar838 4 года назад

Hey There is an calculation error in last line of numerical. It would be 8.72 instead of 8.64

@prasanthg546 3 года назад

Sss , u r correct

@sindhupalanki6578 3 года назад

Yes

@_sadaf_ 3 года назад

Yess

@hiteshleburu 3 года назад

Yes

@nimitgarg2531 2 года назад

Yes there is a calculation error

@jitendrakumarmahato2055 3 года назад

Lot's of love ❤️❤️❤️ from Nepal 🇳🇵 Your videos are amazing and I am gaining confidence in electronics as well. Your efforts are very much appreciated. Thanks a lot.😊😊

@dakshgoyal5262 5 лет назад

Thank u sir i have cleared a lot of doubts from your lectures

@sonusambharwal8828 5 лет назад

Neso acedmey is the best academy for electronics knowledge......thanks sir

@virpareek89 10 месяцев назад

thank you very much Neso Academy, one of the best videos for understanding Zener Diodes as VOLTAGE REGULATORS

@harshpatidar7682 9 месяцев назад

mkc teri , exam aa gayi kya ? humse pehle mat pad

@Josuke217 8 месяцев назад

bit mesra k23?

@ananda_saha_shorts 6 лет назад

Iz=2.66mA,Pz=26.6mW

@AkashDeep-bv1fi 4 года назад

Same mera bhi

@Chalo_Badle_Bihar 4 года назад

Same here bro

@anusmitsaha8604 4 года назад

Same here🤟🤟🤟🤟

@sabidkhan3970 3 года назад

✌✌✌

@EnglsihCommByNawaz 3 года назад

No I= 4A , Vth= 12V, IR= 4 mA VR=4V, VL= 12V

@sathwikreddy1544 9 месяцев назад

ohh my god i was unable to get this topic but now it's crystal clear . Thanks a lot from the bottom of my heart...

@arijit1204 6 лет назад

as we know in reverse bias mode p type semiconductor is connected to -ve end of supply.. but in this case +ve terminal is connected to the p type.. I didn't get it.. is it because zener diode..?

@-_--hp2di 4 года назад

Can you derive a formula to find the voltage across zener diode using other methods besides thevenins theorem such as nodal analysis and such? Thanks for answering my question

@ShubhamSharma-sn8rq 5 лет назад

In case 1 voltage source by replacing zeher diode would be in opposite sence I am nt able to understand this pls clarify

@faisalshah6563 2 года назад

Sir you are doing an amazing job, very fruitful videos these are .. 💜

@prankishoriitkgp3772 Год назад

Thank u so much sir for your helpful and mind blowing content

@stephenmasih4460 7 лет назад

thanks a lot sir............your tutorials are very helpful..........

@studyelectrictech1236 6 лет назад

Sir , in the numerical problem, why do you use both cases with an open circuit instead of using the first case with Vz

@namankukreja818 3 года назад

Thanks sir for such a nice explanation 😀

@righteousness185 5 лет назад

good teaching..very helpful.

@surajkumar-ok7dm 3 года назад

Ohh my god i was unable to get this topic but now it's crystal clear . Thanks a lot from the bottom of my heart.....❤

@maryamshahzadi1054 7 лет назад

you are a perfect teacher

@shashanksankepally2963 4 года назад

Great explanation

@Selenn_A 6 лет назад

how can ı found the q point of this diode?

@MohanKanakaji 5 лет назад

can any one help me how to design a voltage regulator of output 5v and input 12V and load current(0-2)a..?pls

@sadi3230 7 лет назад

Thank you very helpful teaching

@thakurjaysingh10125 7 лет назад

This video is very helpful to me thank you so much sir

@malcolmpinto3374 2 года назад

That vz value of the battery which we put instead of the zener diode is 10v or 12 v ?

@physicsexploration7723 5 лет назад

Sir you explain very well

@rahmath1181 7 лет назад

I like u r presentation...good work

@sakhawathossain7864 7 лет назад

Endless thank you for your job

@spanda7281 4 года назад

thanks a lott .....neso. we love you

@Abhijeetkumar314 5 лет назад

Nice explanation

@rohanbhandari9976 6 лет назад

what ans of your assignment you given replacement resistance 3k?

@mandheermishra147 7 лет назад

Sir when u replace zehar diode with its equivalent modal (as a constant voltage source) when zenar diode is on then polarity should be opposite what u wrote there because we consider that triangle of diode with +ve terminal and that line of diode as -ve terminal neso academy please clear my dabut

@uzairawan1029 2 года назад

why did you change the polarity of voltage replacing the diode? in reverse biasing you had to mark the upper terminal as negative and lower as positive...

@jamilsamouh9134 5 лет назад

why there is a resistor in series with the diode? and should there be a resistor at all the times?

@XAKGSAISREENIVAS 3 года назад

Without u iam zero, love neso

@aakashranjanghosh2640 3 года назад

Bro tell me a thing , that in question Iz is entering through positive terminal of Zener diode hence will it absorb power?

@yuvrajsingh8512 6 лет назад

plz upload the answer so tht we can match either we r solving rit or wrong..i request plz

@96Lamo 6 лет назад

THANK YOU SO MUCH

@tarunjain241 6 лет назад

Good explanation

@mohsenmazandarani7506 5 лет назад

Understood......nice explanation

@nishamore8244 6 лет назад

how much ohm resistance must be used for current limiting resistance

@vinayak8041 5 лет назад

I'm not understanding and for which class

@jasoniasrex 7 лет назад

really nice job!!

@mandezadamz4556 7 лет назад

ooh thank you so so much it really helped

@EEAshutoshTripathi 3 года назад

I am not able to understand boylestad's example 2.22 . Sir please help me. It is very different from other problems ☹️

@akashkumarsingh640 6 лет назад

Excellent sir

@mamthamamtha8271 7 лет назад

tq sir... it was helpful

@Ankittiwari-yk8ix 3 года назад

In second case zener diode should be in forward bias but why you not changed the polarity of Vi ?

@jigarpatel5396 6 лет назад

good teaching sair

@Dreamlbsnaa1619 7 месяцев назад

Thanku sir ji 🙏

@EBKEC_rituKumari 9 месяцев назад

sir can you make a series of placement questions for analog?

@prathammauryahbtu7528 2 года назад

is pdf of what sir is written on board is avaible anywhere

@saptakidebnath5774 7 лет назад

thank you sir ! ☺

@nagamahendrareddybogala6415 6 лет назад

please do lectures on network analysis..

@joeryder5739 4 года назад

How is a Zener diode used for line and load regulation?

@alexfava4132 Год назад

How is Iz = 2.67mA? Pls explain

@mustafasidal2255 7 лет назад

Thanks for video

@ndoumga 8 лет назад

Hey, do you intend uploading videos on Bipolar Transistors as well?? It will be greatly appreciated

@kshitijvengurlekar1192 6 лет назад

Thanks

@teetanrobotics5363 5 лет назад

Sir, please complete the playlist

@sheerin_jjk1322 2 года назад

Sir Vth=VL=I*RL=4×3=12V the first step u did to find out whether the diode is on or off. i worked out the way you did but if VL= 12V then Vl is not equal to Vz right sir?

@annadennis444 2 года назад

Thankyou so much 😊

@pranjalsingh2316 8 лет назад

can you please tell answer to those homework problems?

@safdaransari693 7 лет назад

thank you very much, really helpful

@ChintanMeena 7 лет назад

VL=10Volts ; IL=3.34mA ; Iz=2.66mA and Pz=26.66 mW i have doubt though what if in some case i get Pz greater than maximum power diode could dissipate ...how would i solve such question ? ?

@ChintanMeena 7 лет назад

i think diode will kill itself then :P

@sandylauguico7963 7 лет назад

This is my answer too. VL = 10V, VR = 6V, Iz = 2.67mA, Pz = 26.67 mW

@vamsikrishna9825 6 лет назад

Chintan Meena The diode it self will damage at greater power dissipation

@Avantisha 5 лет назад

Iz = 2.6mA

@Avantisha 5 лет назад

Iz=2.67mA

@shivamKumar-kv9fn 5 лет назад

thanks sirji

@shubhamshrivastava8649 5 лет назад

thank you

@vidhyadhar64 7 лет назад

Your videos are good.. which software do you use for drawing or writing?

@sexo6162 6 лет назад

Hakunamatata

@Muantea 6 лет назад

Vidhyadhar Dharmadhikari scrapbook

@vinayvini3585 4 года назад

Thank u lot sir..

@md.omumsiddiqueauyon8282 3 года назад

can anyone gimme the solve of h.w. problem ?

@balakumar1966 2 года назад

Thank U Sir ❤🙏

@ahmedrihin 6 месяцев назад

Vr = 6v VL = 10V Iz = 2.67mA Pz = 26.7mW Thank you sir .❤

@hCryM 5 лет назад

thanks a lot

@DevRamanTaneja 2 месяца назад

great work sir but i am unable to understand why your Vth and VL are not equal

@sandeepsrrutkute9464 6 лет назад

ples fast sand Video Grapth in Zener diode as a voltage Regulator

@chinmoy5936 5 лет назад

diode will be on . Voltage across resistance=6V,Voltage across load=10V,current through the zener=2.66mA, power=26.6mW

@MohanKanakaji 5 лет назад

can any one help me how to design a voltage regulator of output 5v and input 12V and load current(0-2)a

@samart3010 6 лет назад

Plz make video on TRANSISTORIZED SERIES VOLTAGE regulator. Please. please

@fatimaadilali9267 6 лет назад

thankful :)

@vandanashorts2520 6 лет назад

how the positive terminal of battery vz is upward

@rajendrajagtap1653 6 лет назад

Vandana Mishra It is reverse biased to operate as voltage regulator

@kotasriveni7914 6 лет назад

Sir What's the difference between Vth and Vz? And zener conducts in reverse bias condition but why the diode is open circuited? In the problem.

@vamsikrishna9825 6 лет назад

Kota Sriveni The difference between the vz and vth in above lecture is vz is the maximum output voltage that Zenor diode can give, but in order to give zenor output voltage constant the applied input voltage to the zenor must be greater than the vz. Then only the zenor diode will turn on . So to find input zenor voltage we find vth.

@riseabovehate9476 7 лет назад

How can Vth be equal to Voltage across the zener ? Don't we need to find Rth after finding Vth ? Pls answer my question asap!!

@sayantankundu9903 6 лет назад

No. This is not a thevenin theorem sum.We are finding Vth to find out the voltage across the zener diode.

@Crusader2 6 лет назад

Sir please make a video on tunnel diode

@Viralvideonew7 3 года назад

Vth=12V and VL=10 V what is the voltage across diode.... Vth or VL? If VL then why not Vth?

@pubghackieverunit3650 Год назад

thank you sirrrrrrrrrrrrrrrrrrrrrrrrrrrrr 🤗🤗

@sravaniroyyuru302 7 лет назад

How do you solve this if you have a current source in parallel with a current limiting resistor instead of the above?

@jigarpatel5396 6 лет назад

sair please Make lecture for cliper circuits

@raeeshahmad663 6 лет назад

sir please send temp effect in avalanche breakdown

@dheerajkumarsingh5789 3 года назад

it is already done..see the previous presentation..

@hemantkumarverma7255 6 лет назад

Sir two diode add karka short ckt. Protection hota h in transistorized series regulator. please uski working pa 1 video bana dijiya.

@hemantkumarverma7255 6 лет назад

Sir I will understood, so no need of video, thank you

@user-py6vb8sx5r 2 года назад

hey it's case1 not case2, right? 14:49

@dheerajkumarraghuvanshi532 8 лет назад

Doubt .. !!! In the two cases discussed for fixed voltage and resistance--- Since we are talking about the negative region... In case 1 when Thevnin's voltage is greater than or equal to Zener voltage the zener diode must be OFF. And when the Thevnin's voltage is lesser then the zener voltage the diode should be ON

@sayantankundu9903 6 лет назад

Exactly the opposite.

@sandeepsrrutkute9464 6 лет назад

How to drow Grapth