How to Test MOSFET transistor using Multimeter by some easy methods

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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[@swaminathan1959]

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.

[@LemoToluwe]

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

[@TechStudyCell]

Thanks for your feedback sir 👍

[@jeanlouisbeniere816]

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

[@TWANGROCKS]

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

[@realtoy1]

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

[@raymondlontaan5701]

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

[@TechStudyCell]

You r welcome

[@shankaranseshan3263]

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

[@TechStudyCell]

Thanks for the feedback...

[@Yaasiin9600]

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 ?

[@jagdishnawal4080]

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

[@TechStudyCell]

You are welcome

[@PBS-nm1uu]

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

[@TechStudyCell]

+PBS #007 Thanks

[@xnatstudio256]

kzbin.info/www/bejne/eXXHZX-Xaql5rpY

[@michaelrobert4094]

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

[@erksampat9328]

This was so helpful. Thank you so much!

[@TechStudyCell]

You are welcome

[@ZafarIqbal-nd3mp]

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

[@mindhormone]

informative. thanks

[@dickr5151]

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

[@laraz9235]

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?

[@980ssbbearcat2]

You are absolutely right.

[@MrJamaltp]

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

[@TechStudyCell]

Thanks

[@toddk9431]

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.

[@fardellp]

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)

[@jeanlouisbeniere816]

´s8´zke8k3s

[@ElectronicaVK]

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

[@ELECTRICALTOOLBOXPH]

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

[@TechStudyCell]

Thanks

[@user-tb1zk7hb5v]

hi from one newbie. i want to test the item sg60n03p. what should i expect in first and second direction on D S? i see diode between D and S

[@prakashm1468]

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

[@frikkiesmit327]

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

[@Anniejoenguyen]

Thanks for the lesson.

[@TechStudyCell]

You are welcome

[@sundars6549]

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

[@TechStudyCell]

Thanks 😊

[@rsattahip]

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

[@leegenix]

@@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.

[@tomiyourtradesguy6708]

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

[@TechStudyCell]

Glad it helped

[@marklopez4566]

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

[@TechStudyCell]

Sure. Thanks for the feedback

[@Swenser]

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

[@roimark358]

In testing/checking MOSFETs using Multi-meter, when the gate is charged, why some MOSFETs (N-channel & P-channel), the drain to source let us say 0.002 or less, others starts with more higher like 0.435 and running up as fast as a second or half a second until showing infinite? What does it mean? Does all MOSFETs behave like that?

[@migthyjeff8981]

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

[@skg01234]

nicely explained.

[@DrkTrx]

Excelent, it helped me a lot!

[@TechStudyCell]

Thanks for the feedback...

[@PurityVendetta]

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

[@TechStudyCell]

Thanks for the feedback

[@maxmillangolby]

@@TechStudyCell can u show us P channel also ?

[@opal177]

Very well explained. Thank you.

[@TechStudyCell]

Thanks for the feedback.

[@iiimusika]

ooh excelent thank you

[@TechStudyCell]

You are welcome...

[@rainprie2799]

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.

[@pdloder]

Does this test (to check if mosfet is OK) work if it is still in circuit (but no power connected)?

[@huaweihuawei-gy8ix]

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

[@RafTechyDiyAgritronix]

How IRF1404 is it the same test? Thank you

[@hiddnheiziger]

Thats a real good trick! Thanks for sharing!

[@colutuber]

Thanks for sharing

[@TechStudyCell]

+colutuber You are welcome...

[@rolandhatten6116]

Do you know were I can get tubes for a texas star liner ?

[@kevinbaker2470]

What about mosfets that have the S lead trimmed/not touching pcb?

[@razamadaz3417]

I have 6 pins on my laptop mosfet..do they run parrallel to the other side?

[@jamesshimwitwa3206]

I am trying to test a MOSFET using this method. In the ON state, the drain and source show continuity for a very brief duration, like half a second, and then opens again. I am not sure if this MOSFET is faulty of not. Any advise please.

[@leandrosousacosta4693]

Estou com uma placa fonte de uma tv quando ligo na serie esta acendendo a lampada

[@badshah_pro]

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

[@saiteja.s]

great tut

[@tilotamakodam1810]

What is the drain to source voltage and current in on state when 10 volts is given to gate and source terminal

[@doughunter3967]

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

[@dhinakaranmahalingam4037]

Thank you man for make me understand

[@TechStudyCell]

You are welcome.

[@leegenix]

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

[@andrewforrest7633]

hello if mosfet measures a reading of 707 in on state is this normal. you reading shows 004

[@sudhirpatil3434]

Good!

[@modernviewscience6745]

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

[@TechStudyCell]

Welcome

[@jidi2282]

thanks

[@snakeeyes3733]

I'm getting continuity from source to drain on brand new LMD150 mosfets. What is going on?

[@Ryan_Tidwell]

Brand new FET. Out of circuit test failed. In circuit test passed. Is it good? I think so. Why does it not work like you showed in the first test?

[@tilotamakodam1810]

What is the drain to source voltage nd current when 10V is given to gate to source terminal of IRFP250N MOSFET ??...CAN YOU PLEASE TELL THIS

[@androidgameplays4every13]

Im testing a SVF10N60F and it doesn't behave like this, does it mean it doesn't work? or is it a different kind of transistor?

[@philiptrails9033]

What if after putting a +charge of the mosfet but there is still no continuity.. is it a bad mosfet already?

[@piccadillypainting2826]

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.

[@stingable]

Excellent

[@MyBlowncobra]

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

[@TechStudyCell]

Thanks for the feedback...

[@sanjaykumar-pe6nz]

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

[@akhilkr100]

superb session

[@bathurudeendeen353]

Akhil Raj s

[@cosmo0080]

thank you can i do this when mosfit is in board?

[@tunkunrunk]

what about 8 pins flat mosfets ? is it the same principle ?

[@alibehrouz9833]

well done

[@TechStudyCell]

+ali behrouz Thank you

[@rossmoodley9407]

Is it not possible for mosfet to get damaged when touching gate with fingers?

[@dimuthusampath589]

thank you for this video

[@TechStudyCell]

You are welcome

[@zeemixvideos6485]

where i find cmp40p03 xz 1412 mosfet

[@rogermathura]

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

[@RynaxAlien]

My DTU15n10 new mosfets show short circuit. Whats wrong?

[@hernandjavines2087]

Nice. Very clear. Thanks.

[@TechStudyCell]

You are welcome 😊

[@jeanlouisbeniere816]

´&829ksisk

[@jeanlouisbeniere816]

9e)398&)el

[@shilpimondol4009]

Can I check lm 317t in the same way?

[@barichoudhury5591]

Excellent video.Thanks.

[@TechStudyCell]

Welcome

[@hichamtassi1753]

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

[@jelleterpstra65]

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

[@lingeshbabu8556]

super explain sir👌👍

[@PeteHoffswell]

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

[@DIlic-iz9tx]

*_BRAVO. Super._*

[@mushtaqmahomed]

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

[@rupert274]

Are you sure it isn't the gate and source (not drain) that you need to short in order to turn the mosfet off?

[@tolgadabbagh1877]

very good presentation , thank you ..

[@TechStudyCell]

You are welcome 😃

[@md.anisurrahman1717]

E

[@marvinappleby8611]

Good job.

[@TechStudyCell]

+Marvin Appleby Thank you

[@alchemy1]

Perfect.

[@ziadfawzi]

Thank you.

[@rickbronx8528]

Fantastic, thanks

[@TechStudyCell]

Welcome

[@pierre7523]

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 .

[@udayakumar-zt1lt]

What is the difference between pnp and mosfet transister and what are there voltage capacity

[@thogreen]

actually a quite funny way to test them!

[@josearmandosanchezvaldez6624]

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

[@surendraprasad351]

Superb

[@Anniejoenguyen]

Where did you buy IRF832 Transistor?

[@user-cr4st2ee2j]

how the voltage meter show negative Vgs

[@EVERY.CIRCUIT]

thank you so much

[@TechStudyCell]

You are welcome 😊

[@sattariraq4796]

What is the alternative (top223yn)

[@knot411]

Should we take out the mosfet from the board to make it accurate. Tnx

[@coloradowilderness3139]

Nice. Go ahead.

[@TechStudyCell]

+colorado wilderness Thank you for your support.

[@kingshahzad78]

Th❤anks Dear

[@zbigniewrichard8291]

What if the MOSFET is P-channel? How does the testing method change?

[@yeshambelyalew3914]

thank you!!

[@TechStudyCell]

Welcome