How to test a transistor and diode.

Visit my website for more Tips, Videos, DIY projects and more:
www.mjlorton.com/
-------------------- Click "Show more" ------------------------------
I demonstrate how to test a diode and transistor (NPN and PNP) to assist with trouble shooting / fault finding an electronic circuit board.
Please support my content creation by using my Amazon Store:
astore.amazon.com/m0711-20
-------------------- Click "Show more" ------------------------------
My website and forum:- www.mjlorton.com
Donations and contributions:- www.mjlorton.com
My techie channel MJLorton - Solar Power and Electronic Measurement Equipment - / mjlorton
My Techie Amazon Store: astore.amazon.com/m0711-20
My other channel VBlogMag - For almost any topic under the sun! - / vblogmag
My VBlogMag Amazon Store: astore.amazon.com/vblogmag-20
-----------------------------------------------------------------------
This is a video tutorial on how to test an NPN and PNP transistor.
* Fluke 115 digital multimeter with diode test.
* Electronic diagram and symbols of PNP, PNP transistors and diode.
* How to fix a circuit board.
* S8050 NPN transistor, C639 NPN transistor, C640 PNP transistor
* forward bias 0.3 volt to 0.8 volt, reverse bias open circuit OL on multimeter.

Пікірлер: 442

  • @matthewwayteck
    @matthewwayteck10 жыл бұрын

    I watched a ton of videos and never left a comment, this video deserves one...excellent description I now understand and you saved me $200

  • @merlin5476
    @merlin547611 жыл бұрын

    for many years i have been playing with electronics (see "merlins theremin" on you tube) but never knew how to do a simple transistor test. Excellent video mate. cheers.

  • @TheDrjodi
    @TheDrjodi12 жыл бұрын

    now i can finally test transistors. ive seen other videos on testing them but im useless if i don't understand how it works. gained alot from this one. good job.

  • @robertmcmanis4974
    @robertmcmanis49743 жыл бұрын

    I have watched a lot on videos and still con not tell a good component from bad. You have truly cleared my head and love your videos period!

  • @bakgatfromgb
    @bakgatfromgb11 жыл бұрын

    Hi there fellow South African, all I can say is that you have done a sterling presentation Well done! Have subscribed to your tutorials Thank you and totsiens!!

  • @mikemurphy5336
    @mikemurphy53368 жыл бұрын

    finally very clear , i was always in the dark with the arrow and line and never took the effort to fully solve the ambiguity of the diode icon or direction of current paths this for me was about 30 years of diode icon darkness best video yet on this to clarify this thanks and its easier for me to learn with these vids than actual highschool

  • @janderks8038
    @janderks803810 жыл бұрын

    I watched a lot of videos and almost i never left a comment, this video deserves one...excellent

  • @mjlorton
    @mjlorton12 жыл бұрын

    Thanks for your feedback and support. Cheers, Martin.

  • @danielrice5474
    @danielrice54749 жыл бұрын

    I tested my Diode, Transistor (PNP/NPN) in my radio kit using this video. All worked exactly as it did on your test. I found it easier however to put the transistor into the breadboard and connect a wire from each lead of the transistor to one end of an LED terminal. I used the top springs for a PNP and bottom springs for a NPN which made it easy to see how they both worked the same, yet in reverse current of each other. Thanks for this video.

  • @Shutterbug13856
    @Shutterbug1385612 жыл бұрын

    Hello Martin, These videos are AMAZING for "newbies" to Ham Radio and electronics!!! People tell me, "just put the red probe on this and the the black one on that and put the dial here and this is what you should get." That's fine, but you show is HOW this all works, especially your paper drawings and how you put the test probes on those spots--GENIUS!! Thank you, Thank you. I will now look through the videos to see if you have one on Potentiometers; if not can you make one? 73, Rich, W2RRK

  • @Kurse77
    @Kurse7711 жыл бұрын

    Agreed, top notch vid. I've been doing board level repairs and diag in the electronics field for 15yrs, you are one of the very few people who actually know what they are doing.

  • @mystarstudios
    @mystarstudios7 жыл бұрын

    This is the most thorough video I've seen on KZread in demonstrating how to measure a transistor. I am an extreme novice currently in the process of trouble-shooting a PCB and this was so helpful in clarifying the process. Thank you!

  • @leaf4550941
    @leaf455094111 жыл бұрын

    I really enjoying your videos. My questions are written below. 1. Why we use a resister with collector for NPN- transiter and how can we select its value? 2. If I use NPN- transister then why the capacitor and diode are advisable to use in parallel, connecting emitter and collector, and how can we select T, D and C values? 3. How can we select a transister ? 4. How to stop the harmful frequencies effect on a simple circuit of multiple transistors?? Please answer all the questions, thanks!

  • @YuddaLevy
    @YuddaLevy12 жыл бұрын

    First thank you for the video it was very informative. Second PLEASE continue your vids on basic components....Your an excellent teacher. thank you.

  • @howardstanley3935
    @howardstanley393511 жыл бұрын

    Brilliant videos,I,ve looked at loads of videos on basic electronics but none come close to yours, thanks again.

  • @fariqrashid898
    @fariqrashid8983 жыл бұрын

    You just pour everything out in this vid. Thanks man.

  • @mjlorton
    @mjlorton11 жыл бұрын

    My pleasure, thanks very much for the feedback.

  • @jorgewashington2981
    @jorgewashington29819 жыл бұрын

    A simple thanks for all the time and effort you put into making these marvelous informative videos.

  • @peterregmi3708
    @peterregmi370811 жыл бұрын

    im a college student,it is a really helpful to understand the pnp and npn transistor.

  • @SmithAVproductions
    @SmithAVproductions9 жыл бұрын

    No doubt the BEST video on KZread on how to test transistors, WELL DONE!

  • @faikhawrami
    @faikhawrami9 жыл бұрын

    From Iraq-Kurdistan............1000 thanks to you for your Efforts to serve your brothers of humanity

  • @mjlorton

    @mjlorton

    9 жыл бұрын

    faik hawrami My pleasure, thanks for the feedback.

  • @SDsailor7

    @SDsailor7

    9 жыл бұрын

    mjlorton Great video! very interesting hope you can make a video in the future on how a transistor works.Just subscribed to your channel.

  • @sara78130

    @sara78130

    8 жыл бұрын

    +mjlorton hi bro can u tell me which handle scope is good for testing cars sensor or ignition coil thx

  • @sharfazhameed6382
    @sharfazhameed63822 жыл бұрын

    Visual inspection is the key. Keep up the good work mate.

  • @race5050R1
    @race5050R111 жыл бұрын

    I removed the transistor from the circuit and it tested fine. Thanks!

  • @Americanstu
    @Americanstu11 жыл бұрын

    Just what I need to know for an upcoming interview...thanks for making it so easy to follow!

  • @mjlorton
    @mjlorton12 жыл бұрын

    Great, thanks for the feedback. I'll certainly continue these videos on basic components as I certainly learn through the process as well. Cheers, Martin.

  • @RanMan171
    @RanMan17111 жыл бұрын

    Thank you. I've been watching many videos on transistors but this one is by far one of the best.

  • @mjlorton
    @mjlorton11 жыл бұрын

    Hi Sammy, thanks for the great feedback. If you visit my Amazon store through my link you can then purchase anything...even items not listed. The Transistor tutorial will be one of the next electronics tutorials I do. Cheers, Martin.

  • @johncunningham5435
    @johncunningham54359 жыл бұрын

    Excellent presentation, I always enjoy your videos, easy to follow and understand.

  • @barryg41
    @barryg4112 жыл бұрын

    Thanks for the video. I am always learning something from each of your videos.

  • @pillow62
    @pillow6211 жыл бұрын

    Very Step By Step Informative... Thank you for sharing and explaining the basic lesson

  • @mjlorton
    @mjlorton11 жыл бұрын

    Thanks very much for your feedback Asiel, it certainly is appreciated. Cheers, Martin.

  • @awangheathcliff4912
    @awangheathcliff491211 жыл бұрын

    Thank you sir, this is really brief and simple to understand. Thumbs up for you

  • @vernoncastle8983
    @vernoncastle89838 жыл бұрын

    Vernon Castle .................... This was the simplest demo of testing a xsistor i have ever seen. just great look forward to more demo's Thanks bro.

  • @DenBlackburn
    @DenBlackburn10 жыл бұрын

    Fantastic, cleared up so many little questions for me in one very clear tutorial, thank you very much for your time and effort.

  • @mrhandsom34
    @mrhandsom3411 жыл бұрын

    Thanks for the video. It's been awhile a video has not been explained so beautiful

  • @MrAcogan
    @MrAcogan11 жыл бұрын

    Great tutorial, great pace and really well explained. Thank you very much.

  • @mjlorton
    @mjlorton11 жыл бұрын

    Very good question. Yes the fuse was tested...but it's the "logic" on the multimeter that seems to be at fault.

  • @monkmsm
    @monkmsm10 жыл бұрын

    Thats also a good way of identifing the collector, base and emitter of an unknown transistor. Thanks helped lots.

  • @mjlorton
    @mjlorton10 жыл бұрын

    Brilliant! I certainly appreciate your post and feedback. Cheers, Martin.

  • @extendedp1
    @extendedp112 жыл бұрын

    Thanks for the video, your a great teacher, you explain things very well.

  • @fboo3232
    @fboo32329 жыл бұрын

    Watched again and I would really like to see more of your 'How To' Videos. Thanks

  • @scin3759
    @scin37599 жыл бұрын

    Happy to find your channel. Thanks.

  • @jamfire100
    @jamfire10011 жыл бұрын

    That was very well put over, glad I check you out.. I learned a lot. Thanks for sharing.

  • @onghalamwenyo
    @onghalamwenyo11 жыл бұрын

    thank you very much for taking the time to make this video.

  • @vtssdude
    @vtssdude11 жыл бұрын

    Thank you for sharing your knowledge, it was very helpful.

  • @Ironwarpigg
    @Ironwarpigg10 жыл бұрын

    Great video. Cheers on keeping the knowledge alive and passing it to the new generation.

  • @joshuadenmark
    @joshuadenmark10 жыл бұрын

    Thanks for your post, I really appreciate all the hard work you put into sharing your knowledge with us. Have a nice day, and keep up the good job.

  • @frankfromupstateny3796
    @frankfromupstateny379610 жыл бұрын

    Outstanding...without getting into "doping theories" blah, blah, blah...this really shows one how to test component level transitors....nice video Aye!!

  • @vk2acm
    @vk2acm8 жыл бұрын

    Excellent tutorial and explanation.

  • @oldstyleanalog6459
    @oldstyleanalog64599 жыл бұрын

    thank u for this info.very valuable.school wont teach u as good as u did in 20 min.

  • @mjlorton
    @mjlorton12 жыл бұрын

    My pleasure. The explanation of how a transistor works will be part of the current electronics tutorials I'm doing...so stayed tuned over the next few weeks. Cheers, Martin.

  • @simplexdual2010
    @simplexdual201011 жыл бұрын

    i like this kind of practical and very useful videos. thank you.

  • @mjlorton
    @mjlorton11 жыл бұрын

    Thanks for the feedback Paul.

  • @Ronavargas
    @Ronavargas8 жыл бұрын

    Excellent tutorial! Thanks for sharing.

  • @raywurst2868
    @raywurst286810 жыл бұрын

    man u explain things so easy been wanting to know how to test them and never could understand how i would even buy a cd its that easy i wont remember it long because i had two stroks but ill just come back right here

  • @corby404
    @corby40411 жыл бұрын

    Nice video, easy to understand. Thank you

  • @sls81351
    @sls813517 жыл бұрын

    Excellent tutorial. Well done!

  • @linkenmk
    @linkenmk11 жыл бұрын

    New into electronics. So informative. Thanks for your effort.

  • @QAhkam
    @QAhkam7 жыл бұрын

    Excellent tutorial. very nice explanation, thanks for sharing !

  • @neil8288
    @neil82886 жыл бұрын

    Thanks for your excellent explanations! Really helping me in learning....

  • @elecnut8211
    @elecnut82117 жыл бұрын

    Thank you. This is your best video yet !!!

  • @muneerhataf
    @muneerhataf10 жыл бұрын

    you have clear my transistor concept. which i was hanging from long time.

  • @mickyhearts100
    @mickyhearts10011 жыл бұрын

    Thanks very much for a great tutorial. Seriously learnt a lot.

  • @kimcellosolo
    @kimcellosolo10 жыл бұрын

    Excellent explanation! Thanks.

  • @jhawri
    @jhawri11 жыл бұрын

    Thanks, really useful and easy to understand.

  • @MrRobertSult
    @MrRobertSult10 жыл бұрын

    Very nicely done. Explained very well

  • @mjlorton
    @mjlorton11 жыл бұрын

    Thanks very much for the feedback.

  • @SherrysVloggin
    @SherrysVloggin8 жыл бұрын

    Fantastic video! Very easily explained & simple to follow. Thanks for the lesson👍🏻

  • @mikedevita5558
    @mikedevita55583 жыл бұрын

    Thank you. I'm troubleshooting now and this helped tremendously.

  • @samsaffari5800
    @samsaffari580011 жыл бұрын

    Simple explanation , and very useful , thanks a lot.

  • @pcuser80
    @pcuser8012 жыл бұрын

    Martin, Very nice educational series. Thank you....

  • @andybowen5814
    @andybowen581410 жыл бұрын

    very good clear information Thanks

  • @LAU3768
    @LAU37685 жыл бұрын

    Awesome Explanation Thanks for educating me about trans and diode

  • @saavwafare
    @saavwafare11 жыл бұрын

    Excellent video. Thank you.

  • @bhotzky77
    @bhotzky7712 жыл бұрын

    thank you for sharing this...a big help for me.

  • @mahmir5563
    @mahmir556311 жыл бұрын

    You are a good teacher. thanks

  • @Trevorjhk
    @Trevorjhk9 жыл бұрын

    Brilliant well explained enjoyable and precise many thanks

  • @StevenIlnar
    @StevenIlnar9 жыл бұрын

    Thank you for this video, it really helped. I have watched many other videos how to check transistors, but yours explained everything. I liked the way you explained the transistor by representing it as two diodes. And thanks for mentioning that pinout may be different in different transistors, i thought base is always in the middle)))

  • @zyairelian8560

    @zyairelian8560

    2 жыл бұрын

    instablaster.

  • @MrLibbyloulou
    @MrLibbyloulou8 жыл бұрын

    brilliant vid, your one of my favourites, keep the vids up, thank you.

  • @jeffersonpasco6653
    @jeffersonpasco66538 жыл бұрын

    very clear explanation. BRAVO!!!

  • @krisztianszirtes5414
    @krisztianszirtes541410 жыл бұрын

    You don't even know how much I learned from this :)

  • @mjlorton

    @mjlorton

    10 жыл бұрын

    Good to know...thanks for the feedback.

  • @surak24
    @surak2410 жыл бұрын

    thank you for your very clear explanation. More power

  • @jayhembrom
    @jayhembrom11 жыл бұрын

    really real helpful information and procedures. keep it up.cleared a lot and lots of things for me. thanks for this video.

  • @gugutm
    @gugutm11 жыл бұрын

    Beautiful i really loved your video, i am noob in electronics but this tutorial was one of the best explanations of transistor and diode.

  • @TheAhmadUsman
    @TheAhmadUsman11 жыл бұрын

    Thank you. very good explanation.

  • @djstroman1
    @djstroman111 жыл бұрын

    Great video. very helpful to this beginner.

  • @mjlorton
    @mjlorton11 жыл бұрын

    Tthanks for the feedback.

  • @NJxD519
    @NJxD51911 жыл бұрын

    It seems you are a very good teacher, excellent piece of work ....

  • @mjlorton
    @mjlorton11 жыл бұрын

    Thanks, I appreciate the feedback.

  • @stevenmiller4442
    @stevenmiller444210 жыл бұрын

    Nice video indeed! Thanks M8, been working on trying to breath life back into my old 10 meter Ham tube amp, found the PNP transistor looks like it got hot at some point in time. I studied and followed your video and applied the concept which I am having a reading of 0.002V between the emitter and the base, next step is removing it then try to see if I can't get some written info off it using magnifying glass. 73 from Steve, KC3AZT.

  • @muruvel135
    @muruvel13511 жыл бұрын

    Great. Simply super explanation. Short,simple & sharp make everyone understand clearly. Keep share more tips thru web mjlorton.Thank you

  • @toolfixer56
    @toolfixer5611 жыл бұрын

    Very good!! I enjoyed this Excellent video. I will watch for more of your videos .Thank's

  • @drbonkie
    @drbonkie9 жыл бұрын

    Clear! From many tutorials a like this one the best. Good job

  • @twincam825
    @twincam82511 жыл бұрын

    Nice video learned a lot thanks for sharing

  • @mjlorton
    @mjlorton12 жыл бұрын

    Thanks very much for your feedback Rich. I do touch on potentiometers briefly in "Electronics Tutorial #5 - Ohm's Law Pt 2 - Application:LED Resisitor, Voltage Divider, Current Shunt" I will be covering more on individual components in future tutorials. Cheers, Martin.

  • @paulusbhonga5303
    @paulusbhonga530310 жыл бұрын

    excellent...Very helpful to my basic knowledge about electronic devices

  • @muruvel135
    @muruvel13511 жыл бұрын

    Great tips.I really enjoy watched your video clip simply super short,simple & sharp.Hope to see more tips.Thank you very much sir..

  • @AlQazaz
    @AlQazaz8 жыл бұрын

    Thank you for the great explanation.

  • @jamescarlmoral9389
    @jamescarlmoral93899 жыл бұрын

    good material..thanks so much sir!

  • @smash7777-
    @smash7777-7 жыл бұрын

    Awesome video! I'm just starting out so prob be a while before I need any of this. It was explained in a very easy to understand and remember way. I'll be checking out your other vids for sure....thanks!