How to Test the Voltage of Zener Diode without variable DC power supply

In this video, I have explained the followings about Zener diode:
1. What is Zener Diode
2. Application of Zener diodes
3. How to test Zener voltage of a Zener diode with zener tester using 3nos 9v batteries and a multimeter
4. How to check zener diode with variable DC power supply
5. How to identify Zener diode wattage
The whole testing process is shown in steps so that you will face no difficulty while testing the voltage of zener diode.
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[@venkateshshenoy6944]

Thank you so much Sir. Your idea was of great great help for me. I was struggling with an equipment. This made it so easy for me. Good luck Sir and keep posting such wonderful videos.

[@JoaoEspancaBacelar]

Very nice tutorial. Love the handmade demonstration. Thank you.

[@TechStudyCell]

you are welcome...

[@ramdanesaidi7598]

interresting for beginners, thanks

[@TechStudyCell]

You are welcome. Please do share the video if like it.

[@sammy-pp1gl]

very clear instruction thanks pal

[@BartoszDebski]

Quick and simple. Thanks

[@TechStudyCell]

you're welcome.

[@nimalperera5454]

This is a very good explanation. I learnt a lot from this. Thank you.

[@TechStudyCell]

You are welcome 😊

[@tariq3877]

all i wanted to know if i can use this diode to cancel the 3v in the source and can only get power when there is 12v coming from source

[@orlandochidi5210]

Hi, thanks for the video. I tried it but it didn't work for some voltages - 3.1v, 15v, 33v etc. Please expatiate.

[@dnyaneshwarsalee7644]

7805 ic display ke 5v input ke liye hota hai,Magar mere Ko display me konsa IC use karte hai( memory cheap ke output ke liye.plz sir tell me.

[@PL-kz3om]

hi, it's very easy method you have shown to understand the concept easily and which helps alot for us.. thank you so much.. and I have 1 question if it's IN4148 zener ,then how can we identify.. by using this method..? pls reply

[@yashodraj2979]

as it is break down voltage the diode doesn't get damage with given 27v such as for 5 v diode? ?what is the maximum voltage on which diode can run on?

[@TechStudyCell]

+Yashod Raj
It does not depends on voltage. It depends on wattage of the zener diode which I have explained at the end of the video.
If the multiplication of voltage across diode and current through it is greater than the wattage of the diode then it will burn.

[@sivapp2000]

Very useful & clear explanation. You may explain what is the effect of Zener Diode when the Supply Voltage is less than its breakdown voltage.

[@bullguy112]

Very good explanation,keep it up you have good future

[@TechStudyCell]

+Abdul Hameed
Thank you.

[@kanagarajpalanivel8271]

Simple and very useful .thanks

[@TheMercuryraju]

Hi Brother If the faulty zener diode how can we find out the break down voltage to replace the new one?

[@tariq3877]

I want to retrofit some lights in my car and the rear lights have a constant 3v and when brake is applied the same is increased to 12v and when i use relay it constantly beeps clicks due to 3v is there a way to cancel that 3v and make it to work only when there is 12v in the curcuit. Please

[@kennybassarath7168]

Good work my friend, Cheers.

[@TechStudyCell]

+Kenny Bassarath
Thanks...

[@shuvendupattari8079]

best video

[@TechStudyCell]

Thank you for your feedback...

[@hichamhicham9041]

Thank you friend. I have a question why some diodes gives less voltage than supposed 3.3v it gives 2.7v that's normal or leaky?

[@kennmossman8701]

they need enough current; from 6 to 10mA

[@romeshh4168]

If i want to use a zener diode as a voltage regulator then do i need to connect 10k resistor at the positive terminal as you have used in your circuit.

[@YamarajaDasaAlcyone]

I wanted to know this too

[@melikrasniqi1511]

Romesh H no

[@kennmossman8701]

@@melikrasniqi1511 It does need a resistor to limit current R = [Vs - Vz ]/Current

[@TheMercuryraju]

Hi Bro How you find Zener voltage which is faulty in the circuit to replace the right one, please upload

[@siliv653]

good, thanks

[@TechStudyCell]

+sili v
Welcome...

[@naderhumood1199]

Thank u Sir it's v clear I like your method

[@TechStudyCell]

thanks for feedback

[@ravidewakaluarachchi4690]

superb......dr...

[@researchofufos1205]

Excellence outlines and easy to followed. Good instructional video and construction skills and the dedication of sharing the knowledge. Thank you and God Blessed. Chau Nguyen DDS

[@TechStudyCell]

You are welcome...

[@uschannel2303]

Thank sir,,your simple video making to smart people

[@gie-arartus7876]

thank you for the video.

[@TechStudyCell]

You are welcome...

[@shvideo1]

A great test circuit. Very informative. Thank you for sharing.

[@TechStudyCell]

Welcome

[@shreya_sinha.]

Nice circuit.

[@Helping95]

your explanation is very good thank you

[@TechStudyCell]

You r welcome...and Thanks for the feedback

[@naderhumood1199]

Thank you ..Sir got the point..

[@TechStudyCell]

thanks for the feedback

[@subashkr417]

if it is faulty.how to find out the breakdown watts

[@surajbhannirankaricolonyma1283]

Sir zenor diode 4148 ko kitni volt battery lgaakr vaue dekhenge ji

[@tonyprima7777]

This setup does NOT work for Testing the small SMD Zener Diodes!!! The 10k Resistor burns down and the voltage is unreadable...! Is there any solutions?

[@saarike]

Nice! Thanks

[@digitaldata-surveying]

Thank you

[@TechStudyCell]

You are welcome...

[@jhana.2023]

Very good !!! Thanks!

[@electronic7979]

Nice video

[@TechStudyCell]

Thanks....

[@sauravdas6032]

Thank you sir. Your work is too much helpful

[@TechStudyCell]

Thanks for your feedback 👍

[@sarangalekamge1048]

Excellent explanation

[@TechStudyCell]

Thanks..

[@gazaziho]

Thanks ..but I couldn't understand what you mean at min. (7:20 to 7:49 ) concerning size of diode ..Can you explain please?

[@logic1964]

Thk u for ur effort

[@TechStudyCell]

You r welcome..

[@alphonsefrascato3342]

This is going to help me out a lot sense there is no data sheet that I can find for a diode in an amp I'm working on. The diode is a DS442-BT

[@girishhans5352]

What is the voltage of zenner diode model number-written in4148 on zenner diode then what is the voltage

[@ranjhaheergm]

Sir PCB inverter Bord main No.1 Anode + Hoti Hai Ja No.3 C + hoti hai. Main SMD ki jagah simple ZD Lgana hai. 2 side wala... Waha lgana hai jaha mosfet hote hai. Please help me thanks.

[@HafizulIslam-mn9nn]

how can i found, what's the value of zener diode, when the zener diode is damage.

[@TechStudyCell]

+Hafizul islam
If you have the part number you can refer the data sheet.

[@pollydor07]

THANK YOU MUCH

[@tanusrimoitra1548]

It helped me a lot

[@TechStudyCell]

Great...

[@madhu6462]

Can't we check d voltage just by connecting its leads directly to multimeter leads in reverse direction? Is a battery needed anyway?

[@madhu6462]

Plz ans if a mobile charger uses zener diode?

[@TechStudyCell]

Battery is needed for the zener voltage like 6v 12v 24v etc.

[@wesiyadimaurisza]

Thanks buddy

[@TechStudyCell]

You are welcome...

[@dnyaneshwarsalee7644]

Very very nice video Sir Ji

[@TechStudyCell]

+Dnyaneshwar Salee
Thank you...

[@Dezza71]

what volts do in4184 have?

[@manojpatel9454]

Ic k pin pe voltage kaise check krtein hai on supply plz tell me

[@dibakardas2793]

Which diode short how idetyfy breakdown volt

[@shafikahmed6889]

what is the resister

[@anushkasaha09]

What is the function of resistor in this circuit.. sir

[@ningdeloy6342]

nice video sir

[@TechStudyCell]

+Ning Deloy
Thanks...

[@zozo71zozo71]

VERY GOOD AND CLEAR DEMONSTRATION

[@TechStudyCell]

Thanks for the feedback...

[@swarupkumarbanerjee443]

What value of resistance is required ?

[@Falcon-cd9uu]

Watching from the Philippines, thanks a lot Sir for sharing. More power!!!!

[@TechStudyCell]

Thanks for watching!

[@keith_ferdinanduz]

Simple and easy, thanks for the video!...

[@albertudo8143]

Thk u Sir

[@TechStudyCell]

You r welcome

[@dnyaneshwarsalee7644]

Sir please tell me which IC use for usb circuit

[@TechStudyCell]

+Dnyaneshwar Salee
For constant 5 volt o/p use 7805 ic

[@omsingdhruw7324]

Good circuit.

[@nguyenbinhtrong1028]

I love you so much ...

[@sivakumarv3362]

Thank you. Explained very well?

[@TechStudyCell]

You are welcome...

[@dailybread7638]

Superb explanation bro.

[@TechStudyCell]

Thanks..

[@MaDDyRegal]

Cool bhai ji

[@chithrag153]

gentle man you are grate. an LKG student can understand your teaching. good luck.

[@TechStudyCell]

Thanks

[@nicomedesdadisjr3115]

hi.!! how about a smd zener diode?? can we use the same process???

[@TechStudyCell]

The process should work for SMD...

[@nicomedesdadisjr3115]

thank you for the reply.. 😀😀😀 how can we check if it is a bad zener diode or not???

[@markh.2899]

What is the brand of your meter here?

[@manojpatel9454]

Nice

[@TechStudyCell]

Thanks

[@abdulbasyirmohddahalan3374]

May God bless you.thank you very very much.soon i will upload on my video on my negatif resistance touch on of switch using only single bd139.its shocking me that i have no idea of the phenomenon that with fast switching will latch the switch and mild switching ( gently push) will turn it off.i am researcher of negatif resistance effect since 15 years ago.but it will work on certain treshhold voltage.

[@rymburg]

i gotta find another vid to explaine what did you say

[@Bianchi77]

Cool video shot, well done, thanks for sharing :)

[@allinoneallinone5281]

Thank bri

[@CovertCulvert]

Very helpful compared to the other ones I've watched!

[@terrysookhoo2528]

Best video ever

[@TechStudyCell]

Thanks

[@yellaiahvanumula1305]

Fail zenar diode :value chek kaisa karna bai

[@gordthor5351]

Very clear explanation overall. However, a Zener diode may not be faulty if it has a higher value than your 27v supply.

[@LuxmanPD272]

Very clear and informative. Can you please tell me the value of the resistor used in the test circuit? Thank you

[@gordthor5351]

@@LuxmanPD272 I think I used 2K. A wider range (at least 1-3K range) will work. I used my bench power supply to see how much current was drawn (something like 20-30 milliamps) while testing a wide range of zener diodes, to arrive at 2K, because too much current can damage zenors.
I am using a 30v supply, so I have to be aware that if I am testing a higher voltage zener, I won't be able to determine if it is faulty, if the voltage is lower than the breakdown voltage which causes a zener to conduct in the opposite direction.

[@Savage-lx5yj]

Excellent sir! Thanks for sharing!

[@lukasz19884]

If there may be more than three baterries

[@barichoudhury5591]

Very good video. Thanks

[@lukasz19884]

How many battery 9 Volt maximum nice video sir.

[@TechStudyCell]

3 batteries in series. 27 Volt.

[@vinodkhandeparkat9276]

And how to test a faulty zener diode?

[@up31salman19]

sar ye cheemti ko kya bolte hai

[@chaanitechnical5467]

Crocodile clip..

[@madhu6462]

Crocodile clip alligator clip

[@celtichongy]

Very useful technique.

[@TechStudyCell]

Thanks.

[@FunnyVideos-ce5py]

Best knowledge

[@TechStudyCell]

Thanks

[@Itsmesam99]

Good video

[@TechStudyCell]

Thanks...

[@franciscj8211]

Good knowledge Thanks I will Waite next vdo

[@TechStudyCell]

Thank you

[@maxpolaris99]

Very good thing to know.

[@sharmapukar]

Good explanation. Thanks.

[@TechStudyCell]

Welcome

[@ajayingale3802]

Informative vidio

[@TechStudyCell]

Thanks for the feedback

[@redtex]

Можно сделать стопку из CR2032, дешевле и компактнее.

[@jujurituhebat7575]

Very clearly thanks

[@TechStudyCell]

Glad it helped

[@user-wn3to7bo8j]

Wonderful & experienceable

[@nadeen9249]

Thank you very much..

[@TechStudyCell]

You are welcome

[@khangee6152]

Good work

[@TechStudyCell]

Thanks

[@umapatipaul4937]

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[@kamleshyaday2101]

Thanks

[@abousamah1967]

Very nice explnation
Thank you

[@TechStudyCell]

You are welcome