KZhead

How to Test MOSFET transistor using Multimeter by some easy methods

Tech StudyCell
2024 ж. 4 Мам.
1 292 968 Рет қаралды
Жүктеу

In this video, I have explained some methods of checking MOSFET transistor using a multi-meter.
The method is shown here for testing MOSFET is very easy. Here have used Enhancement N-channel MOSFETs (IRF832 and IRFP250N) to explain how to test MOSFET.
I have also explained How to identify the 3 terminals (Gate, Drain & Source) of MOSFET.
1st method:
In the first method, after you have identified the Gate, Drain & Source terminals of MOSFET, you can check the MOSFET in off state by connecting the black lead to the source terminal and red lead to drain terminal in diode testing mode. You should not get continuity between the source and drain at off state for Good MOSFET.
Then you have to charge the gate terminal and check the MOSFET at ON-state.
2nd method:
In the second method, we will check the MOSFET with the help of a simple circuit. I this method we will turn on and turn off the MOSFET and also control the Drain to source current by varying gate to source voltage.
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Пікірлер

  • Brilliant simple to understand presentation. The presenter quickly comes to the point and walks you through the process without wasting any time. A very good gifted teacher indeed!! The minute I finished watching the video I quickly clicked on the "Like" and "Subscribe" button.

    @swaminathan1959@swaminathan1959 Жыл бұрын

  • Thank you for the excellent explanation of how to quickly and easily understand how the MOSFET works and how to test it.

    @realtoy1@realtoy16 жыл бұрын

  • I like how you trained us ,you are a good teacher . I understand firmly

    @LemoToluwe@LemoToluwe4 жыл бұрын

    • Thanks for your feedback sir 👍

      @TechStudyCell@TechStudyCell4 жыл бұрын

    • 8d)d-)?d-,s9-9e9ekdk:e)39e)e8)8:jekkske

      @jeanlouisbeniere816@jeanlouisbeniere8162 жыл бұрын

  • Just had a mosfet problem... perfect test solved all questions. thank you!

    @TWANGROCKS@TWANGROCKS2 жыл бұрын

  • Good , well explained . Thanks for sharing. Please keep up uploading electronics related videos.

    @ZafarIqbal-nd3mp@ZafarIqbal-nd3mp6 жыл бұрын

  • Thanks for a good description, looking forward to many such videos

    @shankaranseshan3263@shankaranseshan32635 жыл бұрын

    • Thanks for the feedback...

      @TechStudyCell@TechStudyCell5 жыл бұрын

  • Thank you for your time making this informative video, I am repairing inverter now, this video help me understand the use and how this work.

    @rainprie2799@rainprie27992 жыл бұрын

  • awesome technique, never in my mind before. thanks for share!

    @raymondlontaan5701@raymondlontaan57015 жыл бұрын

    • You r welcome

      @TechStudyCell@TechStudyCell5 жыл бұрын

  • Excellent explanation & practical demonstration - cleared many basic doubts - keep making such informative videos - thanks

    @jagdishnawal4080@jagdishnawal40803 жыл бұрын

    • You are welcome

      @TechStudyCell@TechStudyCell3 жыл бұрын

  • Ur demonstration ever ever very usful, and practical &theoritical big thanks

    @MrJamaltp@MrJamaltp3 жыл бұрын

    • Thanks

      @TechStudyCell@TechStudyCell3 жыл бұрын

  • Excellent video, very well put together by you. Easy to understand with the schematic and the two meters showing the operation of the MOSFET.

    @dickr5151@dickr51512 жыл бұрын

  • Bro, you did great!!! Straight to the point..and no grammers!!! The explanation on the design of the MOSFET is superb!!!

    @prakashm1468@prakashm14683 жыл бұрын

  • great demo and explanation the best i have seen please do more

    @PBS-nm1uu@PBS-nm1uu6 жыл бұрын

    • +PBS #007 Thanks

      @TechStudyCell@TechStudyCell6 жыл бұрын

    • kzhead.info/sun/dqidZLCZbHZ8q2w/bejne.html

      @xnatstudio256@xnatstudio2565 жыл бұрын

    • I agree it was very clear and easy to understand, thank you @tech studycell

      @michaelrobert4094@michaelrobert40943 жыл бұрын

  • I was wondering if someone could teach like. Look what I found. Thank you very much. Can you please make some videos about mother board chips the same way thank you

    @huaweihuawei-gy8ix@huaweihuawei-gy8ix3 жыл бұрын

  • Thank you, super handy information which I've just used to identify a faulty MOSFET.

    @PurityVendetta@PurityVendetta3 жыл бұрын

    • Thanks for the feedback

      @TechStudyCell@TechStudyCell3 жыл бұрын

    • @@TechStudyCell can u show us P channel also ?

      @maxmillangolby@maxmillangolby2 жыл бұрын

  • Thank you very much for this fine video. It helped me diagnose 2 out of 4 BS170 MOSFETs bad on my radio.

    @PeteHoffswell@PeteHoffswell11 ай бұрын

  • informative. thanks

    @mindhormone@mindhormone6 жыл бұрын

  • Well done ! Provided one is grounded properly, preferably with an anti ESD wrap. Some of these MOS devices get zapped pretty quickly otherwise !

    @sundars6549@sundars65495 жыл бұрын

    • Thanks 😊

      @TechStudyCell@TechStudyCell5 жыл бұрын

    • You've never been to India, there's so much humidity there static electricity is not a problem.

      @rsattahip@rsattahip5 жыл бұрын

    • @@rsattahip When I accidentally discharged the lead on my failed Motor scooter control unit, I got a large spark. Those Mosfets can store a charge for a long time and more than once. I would short them with a 1,000 Ohm resistor just in case from now on.

      @leegenix@leegenix4 жыл бұрын

  • Helped me to get my brain going again on fets. Im busy to do fault finding on small invertor so now i can make sure wheter my fets are ok or not. Thx for video

    @frikkiesmit327@frikkiesmit32710 ай бұрын

  • Very nice presntation - clearly explained and nicely demonstrated. Probably worth pointing out that the negative lead of some multimeters (particualrly the older analogue meters) have the black lead connected to the POSITIVE of the internal batttery. Also this will only work if the diode test position give a positive voltage of at least 5 V (normally - some may require a higher voltage)

    @fardellp@fardellp5 жыл бұрын

    • ´s8´zke8k3s

      @jeanlouisbeniere816@jeanlouisbeniere8162 жыл бұрын

  • This was so helpful. Thank you so much!

    @erksampat9328@erksampat93283 жыл бұрын

    • You are welcome

      @TechStudyCell@TechStudyCell3 жыл бұрын

  • thanks! make more videos please. It help a lot of people.

    @marklopez4566@marklopez45665 жыл бұрын

    • Sure. Thanks for the feedback

      @TechStudyCell@TechStudyCell5 жыл бұрын

  • thanks for your help friend, this is exactly what i needed to know...Creator bless...doug (canada)

    @doughunter3967@doughunter39673 жыл бұрын

  • Thanks for the lesson.

    @Anniejoenguyen@Anniejoenguyen4 жыл бұрын

    • You are welcome

      @TechStudyCell@TechStudyCell4 жыл бұрын

  • nice and clear explanation for beginner level , especially for me. Thanks a lot.

    @myittarmonclinic@myittarmonclinic Жыл бұрын

  • Fabulous! You're a great teacher. Thank you very much!

    @modernviewscience6745@modernviewscience67452 жыл бұрын

    • Welcome

      @TechStudyCell@TechStudyCell2 жыл бұрын

  • nicely explained.

    @skg01234@skg012346 жыл бұрын

  • Good video for basic testing. Can you show how to test the maximum current of the mosfet, as per data sheet?

    @rogermathura@rogermathura5 жыл бұрын

  • Gud job .. thanku And pls explain the characteristics of Power MOSFET

    @sanjaykumar-pe6nz@sanjaykumar-pe6nz6 жыл бұрын

  • Very well explained. Thank you.

    @opal177@opal1774 жыл бұрын

    • Thanks for the feedback.

      @TechStudyCell@TechStudyCell4 жыл бұрын

  • Yes dear, you can have a thumbs up 👍.!! Simple, clear neat without any doubts 🤗👌

    @Suresh-bx4rz@Suresh-bx4rz Жыл бұрын

  • Great tutorial sir. Simple and easy to understand. Thank you!

    @ELECTRICALTOOLBOXPH@ELECTRICALTOOLBOXPH Жыл бұрын

    • Thanks

      @TechStudyCell@TechStudyCell Жыл бұрын

  • good video. ive never seen like this video simple and easy. thanks.

    @mapuiasailo6467@mapuiasailo64673 жыл бұрын

    • Thanks

      @TechStudyCell@TechStudyCell3 жыл бұрын

  • You nailed it brother. I also have new understanding

    @thapsmedia2409@thapsmedia24092 жыл бұрын

  • You are a great teacher my friend! Thank you

    @MrArcheopteryx@MrArcheopteryx2 жыл бұрын

    • You are welcome

      @TechStudyCell@TechStudyCell2 жыл бұрын

  • Excellent video for checking the mosfets. I am diagnosing a Samsung tv power supply board. Great help. Thanks again.

    @emmanuelmeyermeyer1083@emmanuelmeyermeyer1083 Жыл бұрын

    • Glad it helped

      @TechStudyCell@TechStudyCell Жыл бұрын

  • Nicely done! I got more out of your 3 minute video than 1 hour of reading. I am going to use your test circuit to match mosfets. So simple! For a given input I can swap mosfets and compare their output. For P channel mosfets I can reverse the polarity. I want to balance them for audio output devices. Thank you!

    @2pist@2pist3 жыл бұрын

    • Glad it was helpful!

      @TechStudyCell@TechStudyCell3 жыл бұрын

  • Excelent, it helped me a lot!

    @DrkTrx@DrkTrx6 жыл бұрын

    • Thanks for the feedback...

      @TechStudyCell@TechStudyCell6 жыл бұрын

  • Thank you for explaining. It was very helpful!

    @AmirSad@AmirSad7 ай бұрын

  • Thats a real good trick! Thanks for sharing!

    @hiddnheiziger@hiddnheiziger3 жыл бұрын

  • Very good video..simple,easy to understand...

    @MyBlowncobra@MyBlowncobra5 жыл бұрын

    • Thanks for the feedback...

      @TechStudyCell@TechStudyCell5 жыл бұрын

  • Thanks for sharing

    @colutuber@colutuber6 жыл бұрын

    • +colutuber You are welcome...

      @TechStudyCell@TechStudyCell6 жыл бұрын

  • Thank you master for the lesson

    @levivillanueva5167@levivillanueva51679 ай бұрын

  • Thank you man for make me understand

    @dhinakaranmahalingam4037@dhinakaranmahalingam40375 жыл бұрын

    • You are welcome.

      @TechStudyCell@TechStudyCell5 жыл бұрын

    • @@TechStudyCell Thank you too. I have a better understanding of them thanks to your lecture, clean drawings, and good slow speaking voice.

      @leegenix@leegenix4 жыл бұрын

  • Excellent tuition. Very easy to understand. Many thanks.

    @jamesallen6007@jamesallen60072 жыл бұрын

    • Welcome

      @TechStudyCell@TechStudyCell2 жыл бұрын

  • The best mosfet explanation I seen. Thank you

    @erpa2003@erpa2003 Жыл бұрын

    • Welcome

      @TechStudyCell@TechStudyCell Жыл бұрын

  • ooh excelent thank you

    @iiimusika@iiimusika6 жыл бұрын

    • You are welcome...

      @TechStudyCell@TechStudyCell6 жыл бұрын

  • Good explanation Thank you

    @bassamsalam4938@bassamsalam49387 ай бұрын

  • Thank you for the very clear explaination.

    @radiancecaballero7517@radiancecaballero75172 жыл бұрын

    • Welcome

      @TechStudyCell@TechStudyCell2 жыл бұрын

  • Thanks for sharing this good lesson

    @katuvaalexander@katuvaalexander9 ай бұрын

  • WOW thank you This was perfect and very clear video!!! Love it! Thanks

    @tomiyourtradesguy6708@tomiyourtradesguy67082 жыл бұрын

    • Glad it helped

      @TechStudyCell@TechStudyCell2 жыл бұрын

  • Excellent

    @stingable@stingable6 жыл бұрын

  • Hello my friend I have a question for you when you have only voltage between Gate and the Drain and you test the continuity between source and drain without voltage ! does it beep ?

    @Yaasiin9600@Yaasiin96006 жыл бұрын

  • great tut

    @saiteja.s@saiteja.s6 жыл бұрын

  • Thank you fro uploading. Like the explanation. Simple, straightforward!

    @gustavnordin8690@gustavnordin8690 Жыл бұрын

    • Welcome

      @TechStudyCell@TechStudyCell Жыл бұрын

  • Nice and simple for a learner to learn

    @francisguchie1973@francisguchie19735 ай бұрын

  • superb session

    @akhilkr100@akhilkr1006 жыл бұрын

    • Akhil Raj s

      @bathurudeendeen353@bathurudeendeen3536 жыл бұрын

  • Thanks for the explanation. Helps a lot. I tried to do the same and got the results as you said. BUT, I tried with two types of AVO meter, one (with 3V supply) could do the test and the other with 9v battery could NOT do the test. The reading showed nothing. Could you please explain why? Thanks .

    @pierre7523@pierre7523 Жыл бұрын

  • *_BRAVO. Super._*

    @DIlic-iz9tx@DIlic-iz9tx4 жыл бұрын

  • Thanks very informative, will appreciate mosfet in laptops how to check them in circuit

    @mushtaqmahomed@mushtaqmahomed3 жыл бұрын

  • very nice and practical video ! can a IRF3710 mosfet replace an FET (SK2543) which has burnt ? thanks !

    @hichamtassi1753@hichamtassi17534 жыл бұрын

  • very good presentation , thank you ..

    @tolgadabbagh1877@tolgadabbagh18774 жыл бұрын

    • You are welcome 😃

      @TechStudyCell@TechStudyCell4 жыл бұрын

    • E

      @md.anisurrahman1717@md.anisurrahman17173 жыл бұрын

  • Not Complicated Explanation,so i can understand Easily,Keep in going

    @user-bu2nc6zf4u@user-bu2nc6zf4uАй бұрын

  • Thank you very much for help me.much appreciated,was the best.

    @robertoleon3784@robertoleon37843 жыл бұрын

  • sir if i set multimeter into ohm example X1 or X10 then test the negative pin to source and positive pin to drain are they the same result in diode setting? pls. reply thanks

    @migthyjeff8981@migthyjeff89815 жыл бұрын

  • Very good instruction to check mosfet.

    @malladimurthy3681@malladimurthy36814 жыл бұрын

    • Thanks

      @TechStudyCell@TechStudyCell4 жыл бұрын

  • I will run some tests but here is my question to confirm my results. by reducing gate voltage you reduce current from drain to source, does this reduce voltage from drain to source also? I assume not. I'm excited to apply these MOSFETs to my project to eliminate bulky relays and have a safe circuit by limiting current. Way cool! I'm still trying to find the most reliable way to have dedicated 6v current to one circuit and 12v current to the other circuit from the same 12v supply. Any advice would be appreciated.

    @piccadillypainting2826@piccadillypainting28263 жыл бұрын

  • Thank you bro excellent tutorial stay safe and god bless 👍👍🙏

    @roystonsixtus@roystonsixtus2 жыл бұрын

    • Thanks for the feedback

      @TechStudyCell@TechStudyCell2 жыл бұрын

  • Good video but I have a question, I have a clamp meter 266FT with no diode test mode but it has ohm test labeled 2M, 20K and continuity test labeled 200. Can I use it to test Transistors? Or I should purchase another multimeter

    @badshah_pro@badshah_pro4 жыл бұрын

  • well done

    @alibehrouz9833@alibehrouz98337 жыл бұрын

    • +ali behrouz Thank you

      @TechStudyCell@TechStudyCell7 жыл бұрын

  • thanks

    @jidi2282@jidi22827 жыл бұрын

  • Can I test the transistors 2SK2221 G/S/D when they are still in the amp unpowered of course? They all test 375/1750. Guessing the caps are blown.

    @toddk9431@toddk94316 жыл бұрын

  • Simple but very effective explainaton Sir.

    @siskahardani8906@siskahardani89062 жыл бұрын

    • Thanks

      @TechStudyCell@TechStudyCell2 жыл бұрын

  • Good!

    @sudhirpatil3434@sudhirpatil34346 жыл бұрын

  • Well done.Thanks.I wrote notes of it for future.Waiting for further videos.

    @thomasabraham5276@thomasabraham52763 жыл бұрын

    • All the best

      @TechStudyCell@TechStudyCell3 жыл бұрын

  • Thank u now i can start repair my amplifier i hope only the mosfets are distroid

    @jelleterpstra65@jelleterpstra655 жыл бұрын

    • super explain sir👌👍

      @lingeshbabu8556@lingeshbabu85565 жыл бұрын

  • In your test circuit,can't see how you get a negative reading on your DVM. +ve terminal of DVM is connected to G terminal of Fet (10kpot wiper).If pot set to bottom . Wouldn't it read 0 volts and then only go +ve as pot is increased?

    @laraz9235@laraz92356 жыл бұрын

    • You are absolutely right.

      @980ssbbearcat2@980ssbbearcat2 Жыл бұрын

  • Superb

    @surendraprasad351@surendraprasad3516 жыл бұрын

  • What's the difference between the mosfet health check that I do on my channel and what you do?

    @ElectronicaVK@ElectronicaVK8 ай бұрын

  • Great, God bless you.

    @AloisPalen-yh6bn@AloisPalen-yh6bn11 ай бұрын

  • Nice, I like the video ,explanation is very clear, straightforward.

    @santosnecesario1932@santosnecesario19322 жыл бұрын

    • Glad you liked it

      @TechStudyCell@TechStudyCell2 жыл бұрын

  • Brilliant tutorial, thank you!

    @homelate1306@homelate1306 Жыл бұрын

    • Welcome

      @TechStudyCell@TechStudyCell Жыл бұрын

  • Thank u for this tutorial & sharing ur knowledge. Keep it up!

    @britaniohilaw3537@britaniohilaw35372 жыл бұрын

    • Welcome

      @TechStudyCell@TechStudyCell2 жыл бұрын

  • Good job.

    @marvinappleby8611@marvinappleby86116 жыл бұрын

    • +Marvin Appleby Thank you

      @TechStudyCell@TechStudyCell6 жыл бұрын

  • thank you for this video

    @dimuthusampath589@dimuthusampath5894 жыл бұрын

    • You are welcome

      @TechStudyCell@TechStudyCell4 жыл бұрын

  • thank you sir, but you should explain in some circuit the source & drain are maked I & 0. also some mosfet have no numbers to identify. anyway good video, i subscribe :)

    @kass9722@kass97226 жыл бұрын

    • Kas S ssunnwe

      @bathurudeendeen353@bathurudeendeen3536 жыл бұрын

  • Excellent video.Thanks.

    @barichoudhury5591@barichoudhury55914 жыл бұрын

    • Welcome

      @TechStudyCell@TechStudyCell4 жыл бұрын

  • Great lesson thanks! But please tell me why a 100 ohm resistor is needed in the circuit and how does one determine what size resistor to use?Thanks very much!

    @patrickfarley8036@patrickfarley80366 жыл бұрын

    • In my electronics class, a 100 Ohm resistor is always used at the Base of a transistor in series with the test lead.

      @leegenix@leegenix4 жыл бұрын

  • I like my teacher....I froom Indonesia...Thank you

    @riankumchannel8016@riankumchannel80162 жыл бұрын

    • You are welcome

      @TechStudyCell@TechStudyCell2 жыл бұрын

  • Congratulations, very instructive video !

    @lucgauthier3201@lucgauthier32012 жыл бұрын

    • Thanks

      @TechStudyCell@TechStudyCell2 жыл бұрын

  • Nice. Very clear. Thanks.

    @hernandjavines2087@hernandjavines20874 жыл бұрын

    • You are welcome 😊

      @TechStudyCell@TechStudyCell4 жыл бұрын

    • ´&829ksisk

      @jeanlouisbeniere816@jeanlouisbeniere8162 жыл бұрын

    • 9e)398&)el

      @jeanlouisbeniere816@jeanlouisbeniere8162 жыл бұрын

  • muy practica la prueba de conduccion del mosfet.....

    @josearmandosanchezvaldez6624@josearmandosanchezvaldez66242 жыл бұрын

  • Thanks . Simple to the point .

    @neogeo9965@neogeo99655 жыл бұрын

    • Thanks for the feedback.

      @TechStudyCell@TechStudyCell5 жыл бұрын

    • @@TechStudyCell V good explanation. Thanks..😊😊😊

      @SureshKumar-ct8uy@SureshKumar-ct8uy5 жыл бұрын

  • Excellent, Thank You, very easy to understand!

    @pauldobson312@pauldobson3122 жыл бұрын

    • Thanks

      @TechStudyCell@TechStudyCell2 жыл бұрын

  • By the way, your handwriting is nice and very neat!

    @denv5221@denv52213 жыл бұрын

    • Thanks

      @TechStudyCell@TechStudyCell3 жыл бұрын

  • actually a quite funny way to test them!

    @thogreen@thogreen4 жыл бұрын

  • 5:32 The voltmeter is displaying -8.21 V. If the meter was connected between gate and source, it is impossible to show such value. The only possible way for the meter to display such value is when the meter is connected between gate and drain.

    @solewalk@solewalk3 жыл бұрын

    • Yes. The V meter reading goes from -8.24V to +4.86V = 13.1V quite a trick with a 9V battery! The voltmeter is reading between whatever voltage the variable resistor is set to, and the voltage swing between the 100ohm resistor and the MOSFET.

      @johndoggett808@johndoggett8083 жыл бұрын

    • Symmetrical supply, +9 0 -9 he didn't show us the picture , battery is hidden

      @Blue.star1@Blue.star13 жыл бұрын

    • @@Blue.star1 But there is only one 9v battery in the circuit diagram.

      @johndoggett808@johndoggett8083 жыл бұрын

    • @@johndoggett808 watch carefully the wiring , may be no 2nd 9v batt. is there, how can we get - v unless he connects reverse measuring across somewhere else , he might have connected reverse as mosfet switches at -5 V

      @Blue.star1@Blue.star13 жыл бұрын

    • @@Blue.star1 I agree with Walkalone. When the MOSFET is off, the Meter’s + terminal is at about 0.8v (the Gate (0.8 = 9v - the 8.2v meter reading)). And the negative voltmeter Terminal is at +9V via the 100ohm resistor. When he turns the gate voltage up to 3.5v (9v-5.5v at 6:06) the MOSFET starts to turn no. After this the negative terminal of the volt meter is on the voltage divider between the 100 ohm resistor, and the partially turned on MOSFET. At 6:13 he turns the gate voltage to its highest value, and the MOSFET is pulling the negative voltmeter terminal down the 0v, and the positive voltmeter terminal is the gate voltage.

      @johndoggett808@johndoggett8083 жыл бұрын

  • Is it always that multimitere supplies enough to gate to switch it on, or need to supply higher voltage for some

    @Swenser@Swenser2 жыл бұрын

  • Great job and understandably thanks

    @samuelolayemi5922@samuelolayemi59222 жыл бұрын

    • Glad it helped

      @TechStudyCell@TechStudyCell2 жыл бұрын

  • Hi bro,i like you explained.simple but perfect...tq bro

    @hazllyabmuttalib7074@hazllyabmuttalib70743 жыл бұрын

    • Thanks for the feedback

      @TechStudyCell@TechStudyCell3 жыл бұрын
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