The Amazing DIY $1 In Circuit Transistor Tester : Bipolar Mosfet NPN PNP N Type P Type & More

Подписаться 153 тыс.

Просмотров 9 тыс.

50% 1

Here is something I've been meaning to do for a while. A cheap DIY tester for Transistors and MosFETs in circuit. You can build this for one dollar or less! This video includes schematics, construction details and how to use
Mentioned in this video
DIY In Circuit TL431 Tester
• How to test TL431 / KI...
I work in collaboration with:
The Electronics Channel (with Carlos and Detlef)
/ @theelectronicschannel
Gran Canaria Uncovered
/ @grancanariauncovered (with Detlef and Julie. Not electronics related)
Det Builds Stuff - / @detbuildsstuff8128 (Detlef)
Retro Upgrade - / @retroupgrade (Carlos)
For All Your PCB needs: free $5 discount coupon
www.pcbway.com/setinvite.aspx...
Equipment used in my videos. These are affiliate links, you pay the normal price and I make a small commission.
TEST METERS
Aneng AN8009
s.click.aliexpress.com/e/_DdW...
amzn.to/469ZgOS
www.banggood.com/custlink/mD3...
KM601
s.click.aliexpress.com/e/_DBw...
www.banggood.com/custlink/KD3...
VC480C+
s.click.aliexpress.com/e/_DEY...
amzn.to/3Q3LEz7
amzn.to/46tmNdo
MESR-100 ESR METER
amzn.to/3tiy8hK
amzn.to/3RwvejK
s.click.aliexpress.com/e/_Dmi...
XC6013L CAPACITOR METER
s.click.aliexpress.com/e/_DmX...
amzn.to/3t71Nul
amzn.to/3LDdcbO
TM-902C TEMPERATURE METER
s.click.aliexpress.com/e/_Dm9...
amzn.to/3LFzERv
amzn.to/3PTwuvW
LCR-T4 LOW COST COMPONENT ANALYZER
s.click.aliexpress.com/e/_Dmq...
www.banggood.com/custlink/KKK...
amzn.to/46uzV1R
amzn.to/3RHsmAN
FNB58 USB ANALYZER
s.click.aliexpress.com/e/_Dmd...
amzn.to/3tb1QW8
amzn.to/46oMn30
www.banggood.com/custlink/mKm...
PCI POST ANALYZER
s.click.aliexpress.com/e/_DBs...
amzn.to/46m9Gep
TL460S Plus PCI_E ANALYZER
s.click.aliexpress.com/e/_DnB...
amzn.to/3ZERvOs
TOOLTOP ET829 SCOPE METER
s.click.aliexpress.com/e/_DBw...
www.banggood.com/custlink/KGv...
MULTIMETER PROBE KIT KET05
s.click.aliexpress.com/e/_DE7...
BENCH PSU
NPS3010W
s.click.aliexpress.com/e/_DDP...
amzn.to/3rxsuIf
www.banggood.com/custlink/3DD...
SOLDERING
T12 Station with M8 9501 Handle
s.click.aliexpress.com/e/_DFV...
amzn.to/3FdG8Ul
M8 9501 HANDLE
s.click.aliexpress.com/e/_De0...
T12-BC3 Tip
s.click.aliexpress.com/e/_DeN...
amzn.to/3EUFpqQ
amzn.to/3PB8axw
SUGON T26D
s.click.aliexpress.com/e/_DFx...
QUICK 861DW
s.click.aliexpress.com/e/_DDo...
amzn.to/3PBOKZH
amzn.to/3RCSqNh
PROS'KIT SS-331H
s.click.aliexpress.com/e/_DDo...
SS-331H Spare Parts
www.aliexpress.com/item/40002...
THERMAL CAMERA
Infiray P2 Pro
s.click.aliexpress.com/e/_Dmu...
amzn.to/457PgEb
www.banggood.com/custlink/DDG...
MICROSCOPES
Amscope Optical Microscope (copy)
s.click.aliexpress.com/e/_Dlh...
uk.banggood.com/custlink/mKGy...
amzn.to/4675Qp0
amzn.to/459uvrY
ANDONSTAR AD407
s.click.aliexpress.com/e/_Dl4...
amzn.to/3PSQKxJ
amzn.to/48sxej4
EEPROM Programming
TL866 II+
s.click.aliexpress.com/e/_Dls...
amzn.to/3RTCRB9
amzn.to/3LDu3Lu
CH341A
s.click.aliexpress.com/e/_Dk0...
amzn.to/48IZiir
1.8V ADAPTER
s.click.aliexpress.com/e/_Dci...
CONSUMABLES
NC-559-ASM FLUX
s.click.aliexpress.com/e/_Dda...
DESOLDER BRAID (I use size 8045)
s.click.aliexpress.com/e/_Dl5...
s.click.aliexpress.com/e/_DFJ...
MECHANIC HX-T100 Solder 63:37 (I use 0.6mm)
s.click.aliexpress.com/e/_DeZ...
ESD-11 TWEEZERS
s.click.aliexpress.com/e/_DCZ...
amzn.to/3PVfO7e
Learn Electronics Repair is now on Discord! Come and join the fun, it's free.
/ discord
If you would like to support this channel
You can send donations
www.paypal.com/paypalme/youtu...
You can subscribe to Patreon
/ learnelectronicsrepair
Or you can click Join to become a channel member
Thank you
Richard

Опубликовано:

1 июл 2024

Ссылка:

Скачать:

Готовим ссылку...

Добавить в:

Мой плейлист

Посмотреть позже

Комментарии : 57

@leviathanmac3053 24 дня назад

Reading the comments, some people miss the whole point of these educational videos, keep up the good work Richard, there are a lot of us who appreciate both what you do and how you do it, shout out to Det and Carlos as well.

@pault6533 24 дня назад

Many useful almost-free projects spread all around my lab. A fun way to put old parts to good use, instead of sitting around in bins and boxes. I always appreciate these videos. They probably don't generate very much income, so each one is like a little gift to the community. 🥰

@petero8875 22 дня назад

Explaining basics in a practical way at it's best. Please continue in your down-to-earth style, Richard! Nice one!

@cskeet1320 24 дня назад

Hi Richard, This is inspired! Looks very useful for testing transistors that are difficult to remove or on fragile PCBs. It was only at 13 mins I realised what was going on here. Great stuff as usual. Lovely.

@markusbecker3136 24 дня назад

Perfect timing, Richard. The other day, I ordered a fancier multimeter and I was about to sell the old one. Now I’m going to keep it.

@68CHUCKLES 23 дня назад

Tweezer test leads and footpedal switch would make it even easier !!!

@Rasspor 24 дня назад

I always manage to learn something new and interesting from your content. Please continue to provide us with great content Sir! Thank you for the content you have already created! Love your videos!

@andymouse 23 дня назад

This is indeed an interesting and educational video ! I personally won't be making the device but i'm sure your less experienced pupils will have hours of fun and gain valuable electronics insight unraveling this one....cheers.

@garypoplin4599 23 дня назад

Before I even watch further, I’ve already seen the origin of this idea in your video “All You Need to know about MOSFETs to Fix Stuff” at time fifty min and five seconds (testing MOSFETs in circuit with two multimeters). I’ve been using the two DMM trick for testing MOSFETs for quite some time now! I’ve built a circuit make it easier to hold the different leads on the device. I think that’s what you’re doing here.

@Foobar_The_Fat_Penguin 24 дня назад

Nice and simple! 3 things to mention: 1. If someone doesn't have a second meter, they could probably use a LM317 or something similar to build themselves a CC source for the trigger, no? Might also get you a higher compliance voltage to turn on some less sensitive devices... 2. Now you need to get yourself a Detlef and make a posh Arduino project (replacing the meters with ADCs and such). 😉 3. A slightly more complex project similar to this can be found as a community project on the Elektor magazine homepage. It uses a 555 and two transistors to create a square wave which then uses the DUT as a switch to flash one of two LEDs (representing either NPN/N-type or PNP/P-type). Maybe it's worth a look. It needs more parts but doesn't require meters or manually switching between modes (NPN/PNP).

@LearnElectronicsRepair 24 дня назад

Only problem with using the LM317 in CC mode as the trigger is you lose the display that shows the gate/base voltage therefore it is not possible to tell if this is a bipolar transistor or mosfet.

@Foobar_The_Fat_Penguin 24 дня назад

@@LearnElectronicsRepair True. But if you don't have a second meter (e.g. as a beginner), I'd argue it's still better than nothing. At least you'll know whether it's faulty or not.

@LearnElectronicsRepair 24 дня назад

@@Foobar_The_Fat_Penguin Agreed 😀

@kgsalvage6306 23 дня назад

I was thinking the same thing. Putting the switch into a small project box. Using female banana jacks. I would use the higher voltage type for at least the 3 probe side. Then you can use any meter probes. Maybe put a small peice of green heat shrink on each end of one lead. You could also use mini grabers if you wanted. The trigger and measure sides, the banana jacks wouldn't matter. Just use male to male jumpers. Amazon has 12 pin 4 pole 2 position on/on switches for $8.99 USD. 2 pcs.

@CXensation 24 дня назад

Clever little circuit. Well done Richard 🙃 You could use mini hooks for more comfortable probing, but that is luxury which always costs extra 😋

@hschack 24 дня назад

Hi on the triac test you put the trigger om MT1 pin from Left to Right 1 2 3 3 is gate (nice video)

@gd2329j 23 дня назад

If I understand the circuit correctly all you need is one extra probe with two 4mm plugs for the common . If you're testing a part you'll probably have some idea what it is ! So just flip meter connections for PNP or NPN . No fancy switching is needed !

@gillesparisien4383 24 дня назад

Can i do tthe this with a analogue meter for the triger or the mesure meter n by the way u are very good at explaining the logix of electronic thank you by far the best channel for me

@ionutzionutz7106 9 дней назад

Hello. Very good idea with 2 multimeters. Has anyone tried this method on germanium transistors? I worked a few days ago with germanium transistors and I noticed that there is some value between the collector-emitter, measured on the diode-beep. At trans with silicon between E-C we have "zero" on the multimeter. I ordered 2 cheap multimeters on Aliexpress and I will try this connection stile... Thanks Richard for these wonderful videos, this one and more...

@Tims_Projects 24 дня назад

Great Idea, I wonder, could you do an improved Mr, bleep? Say add another LED for short.

@chillidogkev 23 дня назад

I am not ashamed to say that I found all of this somewhat confusing but I definitely understood what was happening. However, I see very little value in assembling all of this and the fiddly technique required to hold three probes as anything better than a single meter in diode mode and some decent knowledge of how to use it. Is that fair or did I miss the point of it all?

@grahambambrook313 24 дня назад

Roy Rogers, not The Lone Ranger: his horse was 'Silver' 😆

@andrew_koala2974 24 дня назад

The name of the horse ridden by The Lone Ranger was indeed ' Silver ' The name of the horse ridden by Roy Rogers was named Trigger. What was the name of the Horse ridden by that other Cowboy. R.R. The answer is Mrs Reagan And I won't ride anything that has a dick bigger than mine

@LearnElectronicsRepair 24 дня назад

Yeah I'm not good wiith westerns LOL 🤐

@grahambambrook313 24 дня назад

@@LearnElectronicsRepair I suspect you're just a bit younger than me!🤣

@emersonmattoz3794 24 дня назад

how can i measure caps esr with no esr meter..?????

@gd2329j 23 дня назад

You have options ! Oscilloscope & signal generator then do the maths . Pass music through the cap & use a signal tracer on the output . Make a esr meter . A 0.5 R minimum unit is easy & a problem component is probably over 8 ohms or open . If you need better than 0.5 ohms in circuit testing go shopping !

@amdbtk 24 дня назад

Little cumbersome, but good idea. Keep up the good work. /Tamas

@LearnElectronicsRepair 24 дня назад

Yeah I have an idea about making it less cumbersome but it would cost more LOL 😉

@GiC7 24 дня назад

Master

@g4z-kb7ct 24 дня назад

All very good but it's a common beginner mistake to see a nice idea, take several hours to build it, find it doesn't work or they don't understand it and then give up. The proper way is just remove the part and test in a ten dollar component tester... 30 seconds and job done. Same goes for endless checking with a scope on digital ICs like logic etc. It's quicker to pull the part and test it externally using a IC tester. People doing a lot of repairs already know this ;-)

@k3ggaming926 24 дня назад

That how i learn by my self 😂 lots of process manually

@mikebond6328 24 дня назад

The proper way is to throw it out and buy a new one.

@LearnElectronicsRepair 24 дня назад

How about the SMD transistors glued to the PCB with epoxy like that Basic 400 Amplifier I was repairing a couple of videos ago?

@g4z-kb7ct 24 дня назад

@@LearnElectronicsRepair They are easy to remove if you know how lol. I've been removing glued smd parts for ~20 years. The better testers have smd pads so put the part on, hold it and test it. It's not a radical idea, it's the best use of time.

@LearnElectronicsRepair 24 дня назад

@@g4z-kb7ct Clearly this project is not for you, no worries. I wouldn't say there isn't any 'proper' way of doing anything in electronics repair, usually there are several ways to approach any problem and I would just suggest do whichever works for you and not worry too much how others are doing it.

@2009numan 24 дня назад

trigger was roy rodgers horse nothing to do with the lone ranger

@dalevanderzee4086 24 дня назад

lol if you have broken meter leads lying around for years, that is called junk collection :)

@LearnElectronicsRepair 24 дня назад

You may be surprised how much junk I have lying around 🤐

@2009numan 24 дня назад

why would you have two or more multimeter's surely one would do

@mikebond6328 24 дня назад

😱

@Lyndalewinder 24 дня назад

Ive got 3 😏

@Lightrunner. 24 дня назад

Seven i have (one of these are my head, the most important)

@michaelridley5457 24 дня назад

I also have quite a few..

@GaryLaRocco 24 дня назад

Three bench meters on my bench, another 5 on a shelf - maybe eight handheld DMMs... They kinda multiply over time. ☺ You need a minimum of two for measuring both voltage and current at the same time.

@TheElectronicDilettante 24 дня назад

Spaghetification, only as a person crosses event horizon of a black hole.

@pault6533 24 дня назад

How many of you get a pharmaceutical advert to treat Bipolar medical condition when starting this video?

@LearnElectronicsRepair 24 дня назад

The ads are targetted, apparently 😜

@2009numan 24 дня назад

I'm sure you couldn't build that for $1

@ohboy4784 24 дня назад

1$? that is BS! Using the 2 DMM's is at least 10$ (if not more) for the crape-est extra DMM . Just use a single DMM the traditional way, it will take a few seconds more. This is absolutely not needed.

@Lightrunner. 24 дня назад

😴😴 Who care's your opinion.👎 Make your own channel and let us show your knowledge . 🤣🤣

@mikepanchaud1 24 дня назад

Did you watch the video? It's made from scrap or existing parts. It's an educational video, but you know everything already.

@mikebond6328 24 дня назад

The crapiest multimeter is at harbor freight for $5.

@LearnElectronicsRepair 24 дня назад

Now I did mention that did not include the multimeters and I didn't show them on the thumbnail either. Anyone interested in building something like this surely has several multimeters already like every other hobbyist and knows how to use them... and anyway it does not repurpose the multimeter like you can't continue to use it for other purposes as you did before 😉 I made a video a few years ago called the Amazing $1 short finder and that also connected to a multimeter but no one raised an issue over that, hmmmm

@Lightrunner. 24 дня назад

@mikepanchaud1 ,, @mikebond6328 ,, mostly my project are made from scrap, spare parts and so on. My first voltmeter was a analog BBC after that comes a Metex 3650 payed from my first own money and i used it for about twenty years. If you have nothing or less with your own ideas you can move worlds. The electrons don't care whether the components are old or new. Appreciate the value of the things you have. Your own knowledge leads to the goal. Not the tool, the knowledge.