How to use a multimeter for advanced measurements: Part 1

How to use a multimeter for advanced measurements: Part 1 - Diodes

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Күн бұрын

Multimeter tutorial - This series of videos is a tutorial on how to use a digital multimeter for beginners. It will also explain the basics of electricity and address some safety issues.
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This video explains how diodes work and how to use a multimeter to test / trouble shoot them.
Thanks to Comtest South Africa for the loan of the Fluke 87V - www.comtest.co.za
Other equipment / topics covered in this video:
* Fluke 87-V True RMS digital multimeter
* Zener diodes
* Light emitting diodes / LEDS
* Forward bias
* Reverse bias
* voltage reference
* current shunt / current clamp
* conductance / Siemens

Пікірлер: 153

@mjlorton 11 жыл бұрын

Thanks very much for the kind words and feedback. I hope you have fun teaching and sharing your knowledge. Cheers, Martin.

@mjlorton 11 жыл бұрын

My pleasure, thanks very much for the feedback and it's great to know you fixed the TV too.

@mjlorton 11 жыл бұрын

My pleasure, thanks for the feedback.

@GrumpyDerg 11 жыл бұрын

Thanks for the thorough explanation and demonstration. I started watching the Multimeter videos because I bought one yesterday and wanted to make sure I won't blow it (or myself) up in the process, but curiosity brought me here, too, as they didn't cover diodes in classical physics class and I always wondered what each of these components (or at least the common ones) do. I'm not much into electronics myself, but I deal with them when fixing PCs, so still an interesting watch to me. Well done!

@mjlorton 11 жыл бұрын

Thanks, I really appreciate the great feedback.

@mjlorton 12 жыл бұрын

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

@mjlorton 11 жыл бұрын

Thanks for the feedback. I'm about to start the series on electronics again and capacitors are on the list. Cheers, Martin.

@findvoltage 10 жыл бұрын

I like this video. This is clear and precise and it these vids will steer you in the right direction. Thanks for the upload.

@mjlorton 11 жыл бұрын

My pleasure thanks for the feedback.

@shipstern100 12 жыл бұрын

Another great video Martin. Thank you so much for doing these informative narratives. I have learned so much from you so please keep them coming. You’re an excellent teacher in that you do a superb job in covering the subject matter in a down to earth perspective that is clear, concise and easy to understand. Please pass along many thanks to your sponsors for their support in loaning equipment etc. that also make these videos possible.

@mjlorton 11 жыл бұрын

Thanks very much for the feedback.

@mjlorton 12 жыл бұрын

Thanks for the feedback.

@cameronfrancey1718 8 жыл бұрын

Great videos, always good to go back to basics for a review. You have the knack to explain everything in such a simple way which is perfect for beginners. Even though I know this stuff I actually enjoyed watching you preset the subject. I found your videos when I was looking for a review of the Fluke 87-V

@mjlorton 11 жыл бұрын

Thanks very much for your feedback.

@datatravellermac935 9 жыл бұрын

Many thanks on doing some very interesting tutorials! Ive watched all of your using a multimeter basic videos and found them very informative! It certainly made using my newly acquired meter much less daunting!

@mjlorton 9 жыл бұрын

Datatraveller Mac My pleasure, thanks for your post.

@floorpizza8074 7 жыл бұрын

Same here, Datatraveller Mac, I have found his videos to be invaluable. Thank you so much mjlorton!

@neppy5 9 жыл бұрын

this video was really helpful! I've read the instruction manual a few times on this subject but it wasn`t clear until now, thanks!

@mjlorton 11 жыл бұрын

Good question, I will get around to that at some point in time.

@mjlorton 12 жыл бұрын

My pleasure, thanks for watching.

@MazdaMX31994 12 жыл бұрын

Excellent electronic test class! It's very understandable and complete! thank you mjlorton for posting.

@gordonturner8544 8 жыл бұрын

That's crystal clear many thanks. I'm using the Fluke 87/5 so it's perfect. Very helpful and well presented.

@1madscientist4u 11 жыл бұрын

This is by far one of the most informative videos I have seen. You are an outstanding teacher and have a gift for explaining topics in a very user friendly fashion. I teach 7th graders and wish to bring electronics into my classroom in the future. Watching your videos will definitely prepare me for this challenge! Best wishes and I will most definitely be subscribing to this channel. :)

@mjlorton 12 жыл бұрын

My Pleasure...thanks for the feedback.

@joenovit323 11 жыл бұрын

Very good video, you make it very easy to understand. Thank you and keep up the great work!

@pisecx 7 жыл бұрын

Once again - great explanation. Thank you for your work.

@adamatkins2145 10 жыл бұрын

I'm amazed any one had a problem with your video. i found it extremely informative. I appreciate you taking your time too help others.

@mjlorton 10 жыл бұрын

My pleasure, thanks for the post.

@mjlorton 12 жыл бұрын

@UnivegaSuperSport Thanks very much for your input. The feedback certainly helps for future videos. Cheers, Martin.

@tarmo789 12 жыл бұрын

Thanks a lot mjlorton, very nice and educational videos!

@andy7751 10 жыл бұрын

Like your videos very much. On the fluke display the OL stands for OPEN LOOP as in open circuit for resistance and continuity, not overload. Thanks again for very informative demonstrations

@trevorbishop3075 2 жыл бұрын

Awesome, very well presented

@NicholasAarons 8 жыл бұрын

Hi, thank you so much for your Video series of multimeters and how to videos have been so good and a big help and is extremely useful. Thank you again & Keep up the great work. Nick.

@AaronHyster 6 жыл бұрын

really usual to me and I have watched all the beginner's series and they are informative great thanks sir.

@Drew_TheRoadLessTraveled 10 жыл бұрын

Thank you very much for a simple explanation of a diode. My Real world application for this was to test the rectifier on my motorbike. But I now have an understanding of diodes and their place in the world of electronics. I like the way you explain everything in simple to understand terms. You should be a teacher of electronics. Great video Thank you.

@mjlorton 10 жыл бұрын

My pleasure, thanks for the feedback.

@mahoa9418 9 жыл бұрын

mjlorton Martin ;Good afternoon , Thanks a lot >............ this video was really helpful!... Very educational and well explained. I always benfit, from you instructions > I really appreciated the time you took and your explanations. . . Maho A > a civil aircraft Engineer and FAA, A&P / IA Inspector . NDT/ NDI level II Inspector .

@bannyb41 2 жыл бұрын

Your videos are a god send, thank you!!!

@DenBlackburn 10 жыл бұрын

Another great tut, thanks

@morrisonAV 8 жыл бұрын

Found your series of videos at just the right time. I'm looking to buy my first good multimeter and I was looking at a Fluke 177 today. The first part of your tutorials gave me a great "user manual" for this meter, but on this video you switched to the Fluke 87V. What was the reason and would the 177 have been able to do the same tests or not?

@JV-nt9bp 3 жыл бұрын

Nicely explained. Great 👍🏻

@mjlorton 11 жыл бұрын

Thanks for the feedback...and yes...in essence I wish I could could switch that phrase out of my brain!! ;-)

@mjlorton 11 жыл бұрын

Thanks!

@ugdfkkhwv 4 жыл бұрын

Very useful information, Many Thanks

@mjlorton 11 жыл бұрын

My pleasure Stan.

@mjlorton 12 жыл бұрын

@vaughnburrows LOL...suspense....but you do have point. I was hoping to have the next parts up far sooner....should have them up this week. Thanks for watching and posting your comment. Cheers, Martin.

@johnkamau1719 9 жыл бұрын

Very educative insights. Thank you

@hasanqaiser 11 жыл бұрын

Wow! U R Awesome. Thanks for these really good learning videos. It helped me a lot on the job and gave me huge confidence. Don't have words to express.

@benwalter5014 3 жыл бұрын

Thanks for the video keep up the good work

@messaoudikarim2951 7 жыл бұрын

Best phisic teacher ever, thanks a lot

@dimok85 11 жыл бұрын

Thank you for ur videos, i learned a lot from them.

@dnrifu 11 жыл бұрын

To the point, excellent

@mjlorton 12 жыл бұрын

@donwong67 Thanks very much for your comments. Now...you raise an interesting point that caught me off guard when I was making the video because it was the opposite of what I expected....let me get a proper handle on this and I'll feedback. Thanks for posting the question.

@acrossphilippines6338 11 жыл бұрын

I'm just starting watching your videos and its very helpful to newbies...maybe you could post a video regarding on capacitors, how will you know if is it faulty by measuring it by multimeter according to the voltage and microfarads...thanks more power...

@tonypoloney8721 7 ай бұрын

Vey good explanation. Many thanks.

@bobbyedwards9743 11 жыл бұрын

thank you - very clearly explained -

@mjd0124 11 жыл бұрын

Excellent Tutorial

@shanehenderson2354 8 жыл бұрын

Great videos, thanks. You call OL as "Over Limit". Does OL not refer to "Open Loop" as in the loop between your probes in an open loop or open circuit?

@jonolson4584 8 жыл бұрын

Is it fair to reference a diode to similar to being a check valve in a hose?

@noureldinmohamed7051 7 жыл бұрын

thanks for multimatter usage info

@Natemasterflex 4 жыл бұрын

Great vid!

@sumakfarm5538 11 жыл бұрын

You are excellent,great knowledge from USA

@mjlorton 12 жыл бұрын

@toddrharrison LOL...well...I called it "over load" in "error" in a video a few weeks ago. I was corrected (and annotated) and was told it was "over limit"...but in many of the Fluke and Agilent manuals I read it says "Over Load"....I guess it comes down to when it's being displayed...i.e. I need to use it (whichever term) correctly in context. Thanks for posting.

@DGTLFRIEND 7 жыл бұрын

How can Use the Fluke 87 III to test my pool motor capacitor? Thanks for your videos..

@Carotnhan 11 жыл бұрын

thank you for your time. I got more understand clearly about elcetrical

@kokakoka4 11 жыл бұрын

every time I watch your videos I learn something.

@22vvv 9 жыл бұрын

thanks, you have very clear way of explaining this subject :-)

@johnk.4310 7 жыл бұрын

Excelllent. Look forward to more of the same.

@inthenameofjustice8811 8 жыл бұрын

I am amazed, being a new to electronics, just how much essence things need to have in order to operate correctly. Everything seems to work in essence. I wondered, will Almond essence work as well as Vanilla essence or is there a special kind of essence needed? I would hate to buy the wrong kind of essence because, in essence, that might upset the essence values in the circuit. In essence. :o)

@Niasar 11 жыл бұрын

As a PhD in electrical engineering, I would like say your video is excellent

@ELECTROxigeno76. 3 жыл бұрын

Tks very good vídeo.

@eddieware5225 9 жыл бұрын

So are you able to use the diode test to find the voltage drop between any two points on a circuit?

@user-mz4nl6nz3n 5 жыл бұрын

Thanks so much

@mhlaw229 8 жыл бұрын

Very good. Thank you.

@mjlorton 8 жыл бұрын

+Michael Hendrix My pleasure, thanks for your post.

@blinkey6 8 жыл бұрын

I would like to meet up with you and be your friend so you can teach me.You do a great job and explain it well..I been watching your vids from the start.Dont stop..You help many people on here.

@beetee4295 10 жыл бұрын

That was useful, thank you

@reazmohammed9686 10 жыл бұрын

thanks for the usefull info

@warywolfen 9 жыл бұрын

Please note! The ~0.7V forward bias voltage of a diode applies to silicon diodes. Germanium diodes produce ~0.3V. Such diodes are are used in applications where voltages are pretty small, eg, meter rectifiers, RF demodulators, VSWR bridges....

@robbierohn123 8 жыл бұрын

Just hook up to your vid and found it very informative, just in a few hours i learned how to use a multimeter and much wiser on electricity, Thank God for you and doing this. A suggestion; Can u include your explanation for armatures as well, due to situation an locations of whom may be interested.{ I for one never took an electrical class an i learned the importance of electricity on a whole and having the tools for someone/anyone doing a job for me an forgot theirs i have one. now i know how to use it myself} i.e. Continuaty {armature; constant flow of current, hope i'm right}. thanks a lot again

@TheJetty2007 12 жыл бұрын

GREAT VIDEOS THANK YOU

@simonbuenosaires 11 жыл бұрын

Thankyou for your videos i learnt alot from them

@antoniomoreno7757 10 жыл бұрын

great channel thanks for sharing almeria spain

@UnivegaSuperSport 12 жыл бұрын

You do a better job of most in detailing the probe connections. Some reviewers will just fast forward to the meter screen, leaving the viewer to figure out the connections on their own when they want to replicate the test. Perhaps they assume the viewer is advanced enough to know the exact connections and explaining them would insult the audience. Taking the time to detail this widens the audience, making the test more interactive.

@aviavitan606 7 жыл бұрын

thank u so much... it is so good and clear..

@donwong67 12 жыл бұрын

Hi Martin, first of all thanks for the videos, I really enjoy learning from them. Just one question, at about 16:16 of this video when you talk about checking LEDs, you mentioned that to check for the positive side of the LED, you look inside the translucent area and find the side with the larger piece of metal. My question is should it be the other way around? ie: the positive leg should have the smaller piece of metal. Perhaps what you meant was that the positive leg should be longer?

@missismiggins7329 8 жыл бұрын

Hi Mj, great videos thanks - I have a question for you regarding the diode test using the Fluke meter. The Fluke 87 puts out about 3.7V in diode test mode, when testing an LED I get a display reading of about 2.4V, then if I use the Fluke 107 which puts out about 2.4V and test the same LED I get a display reading of 1.8V. The 87III is showing a drop of about 1.35V, whereas the 107 meter is showing a drop of 0.6V, why is there such a large difference and is this normal? Thanks.

@vaughnburrows 12 жыл бұрын

Just a suggestion, I think you should complete all parts in a series of tutorials before posting the first one. It's like watching part one of a good movie and you have to wait in suspense for the other parts. Can't wait for part 2

@WV591 6 жыл бұрын

well that answers my question why one of my meters reads reverse voltage on zener diode and not OL. TU

@speedyracer7594 11 жыл бұрын

Could you explain dB measurements and when they are useful

@YOUSAYITWESPRAYIT 11 жыл бұрын

good stuff thank you

@amaraturay3704 9 жыл бұрын

Great guy

@Ameya274 9 жыл бұрын

So when there's a voltage drop of 0.5v - 0.8v, does this energy gets converted into heat inside a diode (heat and light in case of LEDs).

@mahoa9418 9 жыл бұрын

Anosync Yes .

@ArifBudimartoyo 11 жыл бұрын

on the other video you have said the bias pass through diode should be between 03 - 0.8 for a working diode, here you put 0.5-0.8V Which one correct? coz I have mine figured 0.434V.. is it a good diode? Thanks

@DinoMark74 10 жыл бұрын

Thank you Sir.

@antonioantonio5950 9 ай бұрын

I have to watch this video couple of times because I am a beginner for this subject.

@samsoulee 11 жыл бұрын

Better than my old teachers ! thx a lot !

@mjlorton 11 жыл бұрын

If you watch my electronics tutorials #7 and # 8 I talk about diodes in both AC and DC circuits. Cheers, Martin.

@leopoldogonzalez5444 6 жыл бұрын

why did the zener diode on 14:35 did not conduct on reverse?

@paveldurov7537 11 жыл бұрын

thank you!!!!

@1033141 7 жыл бұрын

thank you sir

@naderhumood1199 5 жыл бұрын

Sir Thank you very much endeed. ...very clear

@mjlorton 12 жыл бұрын

@orbiter8 Cheeky man! I tried posting a reply to Todd the other day but it kept on giving me an error..must be the topic!! Let me try again and you can read it...

@souffrantpaul 11 жыл бұрын

How I can use my fluke 1587 to test thyristor or triac

@martinhegarty8247 10 жыл бұрын

I am amazed that you are discussing Diodes and have not mentioned the words anode or cathode in relation to the polarity or connections especially for beginners to understand and relate to in there text books which should give descriptions and symbols of these !!!