15 seconds into the video, had to pause and comment: I LOVE YOUR WORK STATION. I get to work in a big High-Voltage Lab at Uni; but your set-up is simple, organized, and efficient.
+Chip Guy Vids Thank You. it took me 5 times longer to make the graphics than the video itself but I think it was worth the effort. Best wishes from Markus
you could add into this video that the highest resistance between the two diodes (BE-BC) is the Emitter. If you measure in Diode mode on your multimeter, the highest Voltage is the Emitter. The Emitter is heavily doped, That's why the BE is higher than the BC. Then you know all pinouts .
+Jan sædal Hi Jan. I always seem to miss things out when making a video but thanks to the comments section people will read your reply and everyone gains a bit more info. Many thanks for adding this.
Markus, thank you so much for this simple explanation. I have recently finished a DIY modular "kit" (it's a Serge Synth) and had to solder a single SMD part: A matched pair transistor. After soldering it on with a way too big soldering tip I was pretty sure I destroyed it. After watching your video, I checked its six tiny feet and voila, there is only current coming from one P to two Ns on both sides. Until I can finally check it (the Output module pcb of all things is currently out of stock and will be sent in a week or two) I will remain fearful I'll have to resolder that transistor after all, but now I can sleep a lot better until then! ...Also, your videos made me interested in DIY synths in the first place. Opening up those machines is just way too exciting. Please continue making videos on your channel in 2018!
I need to take some transistors off a vintage amp for testing and this has given me the confidence and understanding I needed. Tha k you for you're clear explanation that also explained the function so we can learn a little more about how the electricity flows and the circuit works.
Great vid Markus. Your videos have inspired me to repair all my old synths. I replaced a bad cap and power switch on my Alesis QSR, bringing it back to life. Also repaired the floppy disk drive on my Korg X3R, bringing back all my songs from the 90s. They are not as good as I remembered. Also enjoyed chatting with you on sonic talk today-I'm AudBall. There I just outed my handle. Cheers and happy new year!
+Jandro Kirkish Hi Jandro. Nice to chat to you on Sonic Talk :-) . Im pleased you are getting some gear repaired. Its real nice when I hear people having a go at repairing things and bringing old gear back to life. I will look out for you on the next Sonic Talk. Best wishes from Markus
+Jakob Haq Hi Jakob. I hope you had a good holiday time also. I have been watching all your video's here on youtube. they are very interesting and educational. keep up the good work. best wishes from Markus.
Fixing my Roland TR-606 and learning about my closed hihat and open hihat problem and found out that it might be the resistors!! Miss ur electronics and musc teardown videos!! Hope to see new videos soon
Thank you your video is very helpful now i understand how to identify pnp and npn,,,, Im confuse the other video but your video is very easy how to understand pnp and npn thnk you god bless u..😂😂😂😂😂😂😂
+ThomasGrillo Hello Thomas. I had to remake this video a couple of times as the first few were far too complicated. I just wanted to make it quick and simple so anyone with a multimeter can do this easy transistor checking. Glad you liked it.
Good to know thanks, very handy. That simple test tells you if its working, NPN or PNP, which is the Base, and both of my cheap multimeters work with this.
Thank you. As I understand it, the emitter pin will have a higher voltage drop than the collector, as the emitter is more heavily doped. For the NPN transistor, the leads appear to be laid out as E-C-B. Same for the PNP. Lord knows with all the packaging styles, it's anyone's guess as to which is which, and some HP test procedures ask you to short the E-B!
Nicely explained Marcus and thank you. I am in the process of putting new transistors into my wurlitzer 200a, and it's not making a sound. So am assuming there's a bad transistor there, or maybe one that is in a different direction than wanted. The amp is working on this, though no sound from the piano yet.... Hopefully will find the issue, though presuming I need to remove them...
I have an LED photo studio light that was dead and when I took the cover off, one component (an L7805CV) looked fried. I'm going to test it out tonight. Thanks for your help :)
Thank you for your good video! Just one question: what if you have readings between each pin and in each direction? Each combination gives me a reading... Thank you!!
Be aware that the leads on an _analog_ multimeter have reverse polarity for such tests. That is, the red lead is negative and the black lead is positive battery. If that 's confusing, simply swap the lead connections on the meter for the purpose of this type of test.
Great explanation on the TO92 package 2S series. Can yo do a breakdown on the 2N series, explaining the differences between the pin-outs of each series and how to tell the which pin is which? Thanks.
Good job ! The fast and easy way to do it. As for identifying a component, Google is your friend, as always. Best wishes to you, your family and friends for 2016 Markus ! Alain.
+AlainHubert Hi Alain Happy 2016 to you and family also. yes I often use Google for almost all my component information. but a friend asked me about a transistor tester as he only had a multimeter so I showed him how to use it for testing a transistor and he said I should make the video as it was so simple and saved him buying a £70 transistor tester.
These videos on testing transistors confuse me. If it's PNP shouldn't you touch the leads on the transistor in that way to test it? P positive, N Negative? (Newbie here trying to learn.) Another video says the emiter will have a higher reading, is that true? I wish I could figure this out.
Im trying to salvage transistors from old cellphone chargers and other devices. I would like to make a led blink using a transistor resistor and capacitor. Does the transistor function differently when different voltages are applied?
Cheap chineese transistor testers show all stuff at once =) But as a child i've read how to test tr-r with just an ohmmeter, old analog one, with pointer, not digital. The essentials are in this video, but it also said that collector has higher impedance.
+nihonam Hi Yes I looked everywhere for an analog meter so I could show how to use one for the same transistor testing but all that was available was the digital one.
The two top videos when searching "testing transistors with multimeter" are this and Gadget Robot's video. He says the exact opposite. He says for an NPN you should get no reading with negative on the base and positive on the collector. I'm so damn confused.
Thank you very much, i have a question for you, my sanyo casetofon doesn't record anymore can u give me an idea what can be the reason, and the main question is, can a death transistor do be a reason why he the casetofon doesn't record anymore
8 years later this is still a great video. Also why when I look it up my transistor is supposed to be NPN but this test says its PNP but when take another one with the sam model number it shows that its NPN??? Like did the chineese guys mislabel them?🤣
Excellent! Very clear, complete and to the point. Wishing my teachers were more like you.
I watched 5 or 6 other UA-cam videos before finding yours, this is the best! Thank you very much! Without the graphics I would have missed the point!
15 seconds into the video, had to pause and comment: I LOVE YOUR WORK STATION. I get to work in a big High-Voltage Lab at Uni; but your set-up is simple, organized, and efficient.
stephen hiller Thanks Stephen, its always changing and evolving as im never 100% happy with the placements.
I like how you implemented the graphics in the video. Nice idea!
+Chip Guy Vids Thank You. it took me 5 times longer to make the graphics than the video itself but I think it was worth the effort. Best wishes from Markus
well said
One of the best transistor test description videos I've seen. Thanks!
the worst !
you could add into this video that the highest resistance between the two diodes (BE-BC) is the Emitter. If you measure in Diode mode on your multimeter, the highest Voltage is the Emitter. The Emitter is heavily doped, That's why the BE is higher than the BC. Then you know all pinouts .
+Jan sædal Hi Jan. I always seem to miss things out when making a video but thanks to the comments section people will read your reply and everyone gains a bit more info. Many thanks for adding this.
Markus,
thank you so much for this simple explanation.
I have recently finished a DIY modular "kit" (it's a Serge Synth) and had to solder a single SMD part: A matched pair transistor. After soldering it on with a way too big soldering tip I was pretty sure I destroyed it. After watching your video, I checked its six tiny feet and voila, there is only current coming from one P to two Ns on both sides. Until I can finally check it (the Output module pcb of all things is currently out of stock and will be sent in a week or two) I will remain fearful I'll have to resolder that transistor after all, but now I can sleep a lot better until then!
...Also, your videos made me interested in DIY synths in the first place. Opening up those machines is just way too exciting. Please continue making videos on your channel in 2018!
That was very useful, never pictured it that way before.You made that very easy to understand.
Thank you for sharing.
ThankYou Nodrog :-)
I need to take some transistors off a vintage amp for testing and this has given me the confidence and understanding I needed. Tha k you for you're clear explanation that also explained the function so we can learn a little more about how the electricity flows and the circuit works.
Most detailed and less bullcrap explanation
Thanks for displaying in person examples. I can't always imagine from a diagram or schematic. I need to see more examples since I'm new to circuits
Thanks for both your clear demonstration and your direct approach.
It is the best video about that topic which I see thanks mr. Markusfuller
Thank you! Straightforward and to the point in under 3 minutes!
Great vid Markus. Your videos have inspired me to repair all my old synths. I replaced a bad cap and power switch on my Alesis QSR, bringing it back to life. Also repaired the floppy disk drive on my Korg X3R, bringing back all my songs from the 90s. They are not as good as I remembered. Also enjoyed chatting with you on sonic talk today-I'm AudBall. There I just outed my handle. Cheers and happy new year!
+Jandro Kirkish Hi Jandro. Nice to chat to you on Sonic Talk :-) . Im pleased you are getting some gear repaired. Its real nice when I hear people having a go at repairing things and bringing old gear back to life. I will look out for you on the next Sonic Talk. Best wishes from Markus
Well deserved thumbs up for a clear and concise explanation. Hopefully this will help me with my own repairs. Thank you.
Just about to solder my VERY FIRST (NPN) transistor to a prototype board. Thanks for this very helpful tip! ---Mike
This made me want to go find my old multimeter from college. Nice to see that you had a good holiday!
+Michael Smith ThankYou Michael. I hope 2016 brings you good health and happiness.
Nice having you back after the Holidays! Hope you had a great time Markus!
+Jakob Haq Hi Jakob. I hope you had a good holiday time also. I have been watching all your video's here on youtube. they are very interesting and educational. keep up the good work. best wishes from Markus.
Easy to understand for a noob. Would like to give you five thumbs up.
Fixing my Roland TR-606 and learning about my closed hihat and open hihat problem and found out that it might be the resistors!! Miss ur electronics and musc teardown videos!! Hope to see new videos soon
a brilliant video, simple clean and flaff free, thank you for this information, i knew nothing of this untill this afternoon
This is a winning tech talk! I love this video!!! Thanks so very much!!!!!!
Best man explained the transistors
A clear, succinct explanation. Thank you
The best transistor video explanation
Thank you Sir for not being brown-handed
Straight to the point and clear. Thank you sir.
Thank you your video is very helpful now i understand how to identify pnp and npn,,,,
Im confuse the other video but your video is very easy how to understand pnp and npn thnk you god bless u..😂😂😂😂😂😂😂
Very easy to follow! Wonderful video!!!
Very cool little vid. I had no idea how to check transistors, but did have to replace one in a theremin. Thanks for sharing this.
+ThomasGrillo Hello Thomas. I had to remake this video a couple of times as the first few were far too complicated. I just wanted to make it quick and simple so anyone with a multimeter can do this easy transistor checking. Glad you liked it.
Good to know thanks, very handy. That simple test tells you if its working, NPN or PNP, which is the Base, and both of my cheap multimeters work with this.
Thank you. As I understand it, the emitter pin will have a higher voltage drop than the collector, as the emitter is more heavily doped. For the NPN transistor, the leads appear to be laid out as E-C-B. Same for the PNP. Lord knows with all the packaging styles, it's anyone's guess as to which is which, and some HP test procedures ask you to short the E-B!
Best explanation on YT thx 👍
Really enjoyed this video, would really love to see some circuit analysis into transistors
Great! This helped me with my electronics homework!
Thats probably the first explanation that really made sense to me!, thanks. Eventho, there can be a little more to it than this i am sure.
i saw a lot of videos, but yours it´s the best! thank you very much!
Excellent video. Quick easy to understand...
Thank you for this excellent video with short and precise explanation.
Nice and clear guide - thanks!
Nicely explained Marcus and thank you. I am in the process of putting new transistors into my wurlitzer 200a, and it's not making a sound. So am assuming there's a bad transistor there, or maybe one that is in a different direction than wanted. The amp is working on this, though no sound from the piano yet.... Hopefully will find the issue, though presuming I need to remove them...
Brief and accurate information. Thanks a lot.
Good deal, thanks,you're the best;after 30 years,...i go it
2024 sir new subscriber always watching your videos very helpful and informative❤thank you for sharing
Brilliant! Very clear and concise 👍
I have an LED photo studio light that was dead and when I took the cover off, one component (an L7805CV) looked fried. I'm going to test it out tonight. Thanks for your help :)
I love it an excellent video I've ever seen on this ❤
Very clear lesson, ❤
Clean and clear.... thanks 👍
great seeing you post up again Sir Markus! enjoyable video per usual. Happy New Year...
+Marc Abernathy Thanks Marc, A new year for making more video's :-) and happy new year to you also.
Excellent!!! Nice and simple to understand . Helped me out big time ! Thank You
excellent video, short, precise, very understandable!! thank you!!
simple and helpful thanks.
Thank you for your good video! Just one question: what if you have readings between each pin and in each direction? Each combination gives me a reading... Thank you!!
Excellent! Simple but very useful. Thank you very much. Best regards.
Very good explanation. Thanks!
Very nice explanation thanks
Be aware that the leads on an _analog_ multimeter have reverse polarity for such tests. That is, the red lead is negative and the black lead is positive battery. If that 's confusing, simply swap the lead connections on the meter for the purpose of this type of test.
What about a digital multimeter
That helped me for the electronics practical exams... thank you ^_^
great explanation, thanks!
Great explanation on the TO92 package 2S series. Can yo do a breakdown on the 2N series, explaining the differences between the pin-outs of each series and how to tell the which pin is which? Thanks.
Simple and to the point....thanks.......
Fantastic 👍 👍 👍. I learned something new.
Yes, it was very useful. Thanks.
very usefull thank god and thank u.
Good job ! The fast and easy way to do it. As for identifying a component, Google is your friend, as always.
Best wishes to you, your family and friends for 2016 Markus !
Alain.
+AlainHubert Hi Alain Happy 2016 to you and family also. yes I often use Google for almost all my component information. but a friend asked me about a transistor tester as he only had a multimeter so I showed him how to use it for testing a transistor and he said I should make the video as it was so simple and saved him buying a £70 transistor tester.
you're the man. Thanks my dude.
you get the quick thumbs up beside my grateful , thank you
These videos on testing transistors confuse me. If it's PNP shouldn't you touch the leads on the transistor in that way to test it? P positive, N Negative? (Newbie here trying to learn.) Another video says the emiter will have a higher reading, is that true? I wish I could figure this out.
great video
whoah, you have made it so clear!
Could I check if the transistors working properly while it's on the circuit motherboard?
This was very very helpful thanks!
What an excellent video! I got a nice idea to upload such kind of video on my channel also. Great work.
thanks very simple and easy to understand. can i test where is collector pin and the emitter pin using diode test?
Thanks, very useful
excellent in quick method test of x-sistor
Im trying to salvage transistors from old cellphone chargers and other devices. I would like to make a led blink using a transistor resistor and capacitor. Does the transistor function differently when different voltages are applied?
easiest one to check pnp/npn.
it won't measure the amplification though..(:
Cheap chineese transistor testers show all stuff at once =)
But as a child i've read how to test tr-r with just an ohmmeter, old analog one, with pointer, not digital. The essentials are in this video, but it also said that collector has higher impedance.
+nihonam Hi Yes I looked everywhere for an analog meter so I could show how to use one for the same transistor testing but all that was available was the digital one.
Very good video, thank you.
Can I check this in circuit or do I need to pull them?
That was excellent! Thank you
The two top videos when searching "testing transistors with multimeter" are this and Gadget Robot's video. He says the exact opposite. He says for an NPN you should get no reading with negative on the base and positive on the collector. I'm so damn confused.
Great video! Thanks !
Nice explanation!!!
Does the transistor need to be removed from the circuit in order to be tested?
How do you diferntiate the emiteer from the collector after knowing the base?
Hi, i wonder why in this transistor have 2 opposite diode? The voltage will flow from emitter to collector right?
Cheers Dude that was explained so even I could understand it 🥳bit late to the partay but heyho! TFS, GB :)
Subscribed 👍
starting at :56 sec you got two readings but you said NPN? You said also the far right was the base what makes that the base? This is new to me. ty
Nice procedure ! Thanks
Where is higher value there is colector, am I right? Thanks for help.
What happen when you get reading on both ways that is pnp and npn when you testing them to see weather it's good or bad
perfect and conscise :)
Great vid, thanks for sharing
Thank you very much, i have a question for you, my sanyo casetofon doesn't record anymore can u give me an idea what can be the reason, and the main question is, can a death transistor do be a reason why he the casetofon doesn't record anymore
8 years later this is still a great video. Also why when I look it up my transistor is supposed to be NPN but this test says its PNP but when take another one with the sam model number it shows that its NPN??? Like did the chineese guys mislabel them?🤣
Do can two ordinary diodes be connected and turned into a transistor?