In this video I demonstrate how to test a MOSFET transistor with a digital fluke multimeter in the off state and the on state. This transistor came out of a Samsung Plasma TV, but is widely used by many brands.
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@sadi32308 жыл бұрын
Thank You Good tutorial..
@snoopda1andonly8 жыл бұрын
+Tuan Sathiyan You're welcome. Thanks for the nice comment! Please like and subscribe!
This is the clearest and best demonstration of checking Mosfets I've found so far. Good on you for taking the time and trouble to do this for mugs like me! My search is over, I'm now confident in doing this.
@Medig-oc2whАй бұрын
it was so annoying with all the other videos until I found this
@nochkin Жыл бұрын
I got myself a transistor tester, but this method is still extremely valuable when you don't have access to other tools. Thank you.
@wazandrew82023 жыл бұрын
this video is 6 years old as i watched it today, even six years after posting it it still helping people. thats brilliant, thank you i am more wiser on testing mosfet now.
@keitharoo19624 жыл бұрын
Watched the video, immediately tested my MOSFET. Thank you SO much for the information!
@mrgreggwinfrey9298 Жыл бұрын
Thanks for showing how to do this with a known good mosfet and a bad one..no more being confused by the other videos on how to test!! You won yourself a subscriber!!
@brazo985 жыл бұрын
Thx a lot for your movie! Today I bought a simple china component tester! It make my live so easier! I don‘t soldering anything out and nothing! Clip on the wire measure in secounds, done! Perfect! 💪💪💪
@gaborudvardi94023 жыл бұрын
Nice video! Just a notice: most multimeter operates between 1V to 2V in diode tester mode which is not enough for a switching MOSFET to open.
@MuhammadShohaibHassan3 жыл бұрын
Thanks for the info. I saw a lot of videos and was wondering, Why my DMM can't charge Capacitor by touching the Gate.
@bobszejk96202 жыл бұрын
Oddly enough, I have a B&K component tester that shows 2.9vdc output on the diode setting but will NOT charge an IRF520. I have a Fluke digital multimeter that outputs only 2.5vdc on the diode setting but works perfectly on the SAME IRF520 every time.
@Uvisir Жыл бұрын
yeah some meters test with 7 Volt and some 3.5 V or lower etc, this needs to be checked first with another multimeter.
@keithking19855 ай бұрын
An easy tester is a 9v battery with a single diode and led(with resistor if you want it, for indication) on one probe. Subtract the diode and led voltage and you got a simple polarity tester. (You still need a meter to measure voltage drop on it but got more than 2/3 volts to play with)😊
@MrLennymon Жыл бұрын
That's worth a subscribe. So many videos, so technical from so many super smart dudes that could not correlate to me so easily as you have done ty
@simonadeyi80936 жыл бұрын
perfect video, clear English & easy to comprehend
@alocin1103 жыл бұрын
Thank you for sharing. Good explanatory and simple tools to test. Thank you again.
@bernhardjanssen92845 күн бұрын
Thanks a lot for teaching me how to test a mosfet hope i good learning more from you like other type of mosfet how to test thank you very much !
@DanielJaegerFilms5 жыл бұрын
I had a trailer brake controller which was constantly applying the trailer brakes even when the truck was off. Happened to find this video while googling the transistor number and found the transistor was shorted internally just like the one in this video. Thank you so much!!!
@irontoolgoddess6 жыл бұрын
Both of my meters are similar types (read the same way) as yours. Other videos show different readouts, and I was still confused. Now with yours, I know my MOSFET IS faulty. Thank you.
@sand00774 жыл бұрын
Short and to the point, thank you!
@malcolmwicca3 жыл бұрын
Many thanks for this tutorial. Just got some Mosfets off a Brushless motor ESC and found 2 duff and 4 working OK. I'm making a flashing 10W LED lamp to put in my model aircraft for when they go in to cloud or otherwise out of sight, and needed the mosfets to switch the power on and off to the LED driver.
@mareprah Жыл бұрын
Man, I would just like to express my sincere thank you!
@015diesel5 жыл бұрын
Excellent video mate, first class! You really do make it simple even for newbie's like me to understand and for that I thank you very much.👍
@TheBdd48 жыл бұрын
A video well done. I design circuits, but did not have this test technique in my bag of tricks. Thank you.
@snoopda1andonly8 жыл бұрын
+TheBdd4 Thanks for your comment! :)
@markharris42607 жыл бұрын
simple and right to the point " that was a good way to demonstrate that ! Also if checking power mosfets with ohm meter set to ohms reading and you get ANY reading between any combination of gate to drain or source to gate ect that shows a dead short the mosfet is bad it's shorted ! but make sure to discharge it by holding the three leads between your finger and thumb before doing dead short test this way ! I have had many mosfets read .437 and ( point 437) work fine as that is residual capacitance in the internal circuit ! always check a new one before installing it !
@KAFA20208 жыл бұрын
Masha-Allah. Zazakallah Khyer. You are very helpful for every engineering students.May you live a long life with Full of gladness and health.
@jimmartin88532 жыл бұрын
Thanks for the help! Because of this video I found that a MOSFET I suspected to be bad turned out to be good. Ended up fixing a device which really had a bad electrolytic cap. Who would have guessed?
@TutoPolo5 жыл бұрын
very nice, very clar, thanks
@MEisLOLtoday5 жыл бұрын
THANK YOU. helped me figure out for the first time of my life if a mosfet it good or not! :D
@TheVideoVolcano4 жыл бұрын
Thanks for this tutorial. It helped me fix a GPS problem (level shifter MOSFET was being uncooperative) with my HAB flight tracker for my dissertation.
@alolouh67858 жыл бұрын
On and Off state ...again learned something new... thx verry much.
@265chemic6 жыл бұрын
Thanks, helped me test and prove a MOSFET in a Honda CBR indicator relay was good
@jantvs96494 жыл бұрын
Good tutorial
@yron1008 жыл бұрын
good tutorial.at the beginning you have to short those pins with the negative lead but everything is correct.once again good job.
@Zomwil Жыл бұрын
This video is actually really good
@Vettemeats3 жыл бұрын
Saved me a ton of time. Thank you!!!
@Enoch-Gnosis3 жыл бұрын
THANK YOU ! you saved me a ton of trouble shooting !
@lawrencejelsma81188 ай бұрын
I found this video informative and great to have produced. I forgot the charge up of source to drain part to develop a capacitive voltage for a short while in good MOSFETs. I would want to double check my schematics of the MOSFET to know where the source and drain are vs gate to drain shorts. I don't have a transistor checker multimeter yet.
4 жыл бұрын
Be aware that this works *only if* the voltage provided by the dmm to charge the gate is above the mosfet's gate threshold voltage. The high-voltage fets have Vgs-thr above 4V. Some even atound 10V. The low-signal and ultra-low voltage have lower voltages but not much below 4V. A regular dmm outputs about 1V...2V with high impedance. Some up to 8V on a 10Mohm load. It is safer to use a variable power supply with a high-value series resistor as s gate charger.
@NSC-Modz4 жыл бұрын
Nice explained 👌
@user-xh6cb9uh7f3 ай бұрын
Fantastic and educative video ❤❤❤❤🎉 excellent work bros.
@zahidabbasi566 Жыл бұрын
Awesome video for learning, also your way of explaining is well. Thanks brother-Pakistan
@shellygoldensteinberg45215 жыл бұрын
Excellent demo. Thank you.
@user-ee1zn3yn1e3 жыл бұрын
Thank u for your good Training
@kingjilheartbeats3 жыл бұрын
It's correct method,I do the same👍
@britaniohilaw35372 жыл бұрын
very clear explanation. now I know. Keep it up. Thanx u.
@nicdheen23654 жыл бұрын
Thank you
@SilverMoonJoe6 жыл бұрын
Outstanding video. Very well explain and simple to understand! Keep it coming... 73, Joe-K4JGA - JGA Electronics Repair Center, Florida
@dolleliteeluck90933 жыл бұрын
Great video thanks a lot
@tarashe_pc Жыл бұрын
Perfect and practical bro 👌
@johnpauljacob17043 ай бұрын
This is what i needed thanks
@johnberry53397 жыл бұрын
This is a great tutorial, I have just tried this with my IRFZ44N Mosfet and it works perfect. I have liked and subscribed. Thank John.... :)
@snoopda1andonly7 жыл бұрын
Great. Thanks for sharing!
@8290Wgu4 жыл бұрын
thank you............. goods information
@swarajprojects787 жыл бұрын
nice tutorial
@robertburgess968 Жыл бұрын
Great video. Very clear. Cheers. Legend..
@skmash3 жыл бұрын
Thanks, it's clear. But what about P-channel MOSFET? Is it the same way to test?
@jbvmpsmtr5488 Жыл бұрын
My question too 😁 do the test on P-channel! 👍
@renstonyoung81462 жыл бұрын
Really informative enjoyed it
@keragala16 жыл бұрын
Very simple and valuable explanation. Useful for beginners like me. Like to watch your other videos. Tanks.
@Saf_R2 жыл бұрын
This is how you should do a tutorial short and to the point!
@PatrickRibbsaeter5 жыл бұрын
awesome video.. the most simple and easy explanation on the internet.. everyone else seems to make it so difficult.. good job.. if u can show this on a laptop motherboard that would be very helpful .. thanks
@cieloladra94694 жыл бұрын
tnx so much for sharing ung knowledge👍👍👍GODBLESS
@user-sn6sk7kc7e7 жыл бұрын
Thank you for your video
@zahidabbasi5662 жыл бұрын
Very nice awesome video. Thanks sir (Pakistan)
@MechanoloGeek4 жыл бұрын
Very informational video, thank you very much for posting :)
@rolandtutorial33776 ай бұрын
Great tips thank you so much 😊 😊
@Jabanoflier2 жыл бұрын
Good one. I like your explanation. Thanks for this vid.
@vu2atn2 жыл бұрын
Very useful. Thank you.
@mrtech91463 жыл бұрын
Good, i hve been looking for something like this thank you for sharing
Thank u for ur lessons it help me alot great work explain very clearly an simple
@andersemil55415 жыл бұрын
Awesome video. I have a bad power board in my LG oled tv and I suspect one or two mosfets are burnt. Gonna use your method to test those. Thanks a bunch.
@anwarnetservices6 жыл бұрын
Thanks very much
@mojhajostechnique4 жыл бұрын
Nice one master
@mikewelch83798 ай бұрын
Well done. Thanks!
@tonyburgin12635 жыл бұрын
This is how i've tested mosfets in the past. I found using the meter to charge the gate didn't work with every meter i tried.
@davidbolha6 жыл бұрын
Hello, Thank you very much for this info/tutorial. ☺
@sigitsudarmaji81178 жыл бұрын
very useful thanks
@arabigamer10183 жыл бұрын
thanks sir great tutorial
@XBKLYN6 жыл бұрын
Thank you for the video...great stuff.
@herminigildojakosalem86644 жыл бұрын
Great Info, Thank you! But for the sake of newbies like me, you should have explained as well how come touching the Red Probe of the meter (with the meter in Diode Test Mode) to the MOSFET Gate charges it (if you get my drift, that is). Thanks again.
@Teknickel_ftw4 жыл бұрын
thank you this helped me a lot.
@fikfi8914 жыл бұрын
good explanation and clearly....
@wegi96213 жыл бұрын
That was good. Thanks. A bit missing show parasite mosfet diode.
@marikkannanmarikkannan64487 жыл бұрын
Great video! Simple and well explained....
@casperakoma72734 жыл бұрын
Thank you so much, i have learnt something today.
@jvcute95157 жыл бұрын
this is the tuturial i like ...1m likes for u...
@miguelsalami3 жыл бұрын
EXCELLENT👍👍
@mubarakka73645 жыл бұрын
Okay sir thanks for next version
@Spark-Hole Жыл бұрын
The best way is to have a new one sit aside. Then do each experiment one by one on both MOSFETs alternately
@balasuriyage Жыл бұрын
Thank You Good tutorial..
@alifahim24088 жыл бұрын
thank you for explanations so informative
@rizen686 жыл бұрын
thank you very much
@Bianchi772 жыл бұрын
Nice video, thanks for sharing :)
@ahmadal-tarabeen9253 Жыл бұрын
Does the measurements make any difference when its mounted on the PCB ?