Let's speak about tools and skills. Can you take my test? :D
Vložit
- čas přidán 20. 09. 2022
- Ebay store: www.ebay.co.uk/usr/sorinelect...
WebSite: sorinelectronics.com/
Patreon support: / electronicsrepairschool
CZcams Members: / @electronicsrepairschool
Forum: forum.sorinelectronics.com/
Discord: www.sorinelectronics.com/discord
My tools: www.amazon.co.uk/shop/electro...
PayPal me: www.paypal.com/paypalme/Elect...
. its nice to find someone , who teach and shares his wisdom on his craft, thank you for bringin light on my path for electronics and repair
Sorin, when i saw you back in the days, not having a Hotair Station at all and still de- and resoldering IC's on a Phones PCB, with a (i guess it was something ceramic) self made Hotair thingy, that was impressive!
It showed me that its not the tools that i don't have restricting me, but my brain / thinking only!
Thank you for that lesson, it changed my mind in so many ways! Keep up the great work buddy!
He always had hot air
Ok u meant urself
Nope, i meant Sorin. Check out his old Videos :)
A beginners guide from basic circuits to more advanced would be great.
He has playlists to do with beginners stuff.
Hi Sorin, a good soldering iron is the Aixun T3A, you can choose the handle so you can use different tips from different type of soldering irons (with the T245 you can use the entire JBC set without buying a JBC soldering station).
I love how you search microscopes earlier and by 44:19 they are posting ads for Amscope as you browse. Great video.
Dear Sir..happy you are better today and hope your wife Diana will recover soon. Also thanks for the nice and the very informative video. Jad from Ottawa.
Geez I sure like it when you get bored... this was great.. at 70 I have taken the task to understand electronics a bit.. though with this old mind of mine it is three steps forward and two back.. But there is some progress.. It is just new things are harder to retain these days..I have no problems reading schematics I know the parts and pieces fairly well (from my days troubleshooting auto wiring).. it is how they work that I still find hard to grasp.. But please set up a test video! (With explanations and answers either later or in another video..) I love being pushed to learn.. thanks Sorin.. hope you and your wife get healthy and stay happy.. All the best my friend..
Linear power supplies are not rare, they simply expensive. Also You can tell the difference in size and weight. Linear are big and heavy. Switching power supplies are tiny and light.
I work repairing mechanical/structural stuff on vehicles most places deem to be "Un-repairable". That stuff is just normal to us here. We only ever get the hard jobs. With little(ish) prior knowledge I dived into electronics repair to keep the brain active. Always be learning & all that.
Right off the bat, it strikes me that the same applies as applies to vehicles - there's huge skills to be learnt if you want to do the hard repairs, it's not "easy", most can't be bothered with the hard stuff & you rapidly learn that the "Experts" you thought were experts aren't really that expert in a lot of cases once you understand their subject as well or better than them.
The last ECU that came back from the "Experts" - I knew it had burnt traces - deemed "No Faults" by them, with a large bill, pushed me to start learning electronic repair. It hasn't been long, but it has been intense - I now know when I am getting smoke blown up my behind & why. That alone is priceless. Being able to repair it yourself is the icing on the cake. I go into "Sorin" mindset now - peering down microscopes.
Since I cannot reply or edit my previous response, I'll add it here: In addition, I jumped in the deep end of the pool learning switch mode power supplies with a basic understanding of transistors, FETs, etc. Where your second illustration was much easier to follow, but it did take me many videos and notes on switch mode power supplies to understand how the feedback circuit affected the current draw across the main transistor and then how the optocoupler was the non-conductive way to separate out the hot and cold side of the SMPS.
I shop for used power supplies. Found some good ones very cheap. I bought a digital microscope it works great. Keep up the good work. Your fans appreciate you.
I'm interested in learning electronics. I love electronics! I watch and listen to your channel almost religiously 😂
They helped me so much that I got my first electronics repair job.
I even have a video about flux where I mentioned you. Since I switched to Kolophonium I never looked back. Thank you sir 😊
P. S. The schematic you've shown is of an astable multivibrator, which I used to build by hand before I've learned of the NE555 chip.
Great start on setting up a repair shop. If you want a soldering station that last for years, you need to find a manufacturer that has been around for many years and that continues to produce replacement parts.
Insanatosire grabnica iti doresc si iti multumesc din suflet pentru tot ceea ce faci! Am facut si noi cunostinta cu Covidut , noi am prins Delta si a fost un pic mai nasol , dar pe mine un pic de electronica m-a tinut pe piciore si am trecut peste. Intr-adevar "a beginners guide from basic circuits to more advanced would be great " ca sa citez din comentarii , cu explicatii pe care numai tu poti sa le faci! Iti multumesc inca o data si toate respectele mele! Salutari din Romania , Mures !
I bought the same psu as yours and I fitted a thermal switch in series with the fan, just starts on it's own when is hot
Smart
Another recommendation for Flux is MG Chemicals 835. It’s nasty if you get it on your skin (sticky as hell!), but it cleans up well on the boards and leaves the shiniest of shiny solder joints 😁
Thanks for another great video Sorin 🙂
A decent hot air station and soldering iron is a must for me. I damaged so many boards with a cheap yihua unit. My Atten ST-862D has been revolutionary for my repairs! I also paid nearly £200 for my microscope arm! So worth it!
Thank you Engineer. I enjoy your classes. But I would appreciate a session on the BASICS of electronics.
I love electronics, repairing them and everything about them. I wish I had the honour to work with you, I even spoke to your boss about it a while ago… it’s a shame I was not one of the employees there, we would have been BFFs ever after ❤️💻📱
My favorite CZcams, Where we learn many tricks and ideas of repair stuff, God Almighty Bless you Sir
Thank you so much Mr sorin
I'm most grateful for this video, I'm about getting a place and coming out to public
Blinking Led light for fake car alarm. I made it and sell it so much when I was in the high school. You remember me of that time. Time 30 years ago :)
Hi Sorin, will a lab power supply that goes up to 16v still be ok to do most troubleshooting ,i know the main rail is 19v but i have always been under the impression there is always a few volt difference either way on most ps above 12v.
Thanks in advance.
Cheers
Greatings from serbia.
The bench power supply you modified, you can do it in better way with the fan.
One ntc thermistor from a old PC power supply, one transistor or mosfet and one potentiometar.
So you can choose how the fan will gonna spinning.
When the temperature is too low, then the speed of the fan will be reduced to minimum rpms, or no spinning at all.
When the aluminium cooler is going hotter the fan will be spinning faster and faster.
The temperature can be regulated with the potentiometar 😂😁😜
Hi Sorin..Beside the basic instruments (dmm,solder iron,hot air) the most expensive tool is definitely the microscope and the arm. I dont know if a bga rework station is needed at the start. If you repair audio devices you also need oscilloscope, function generator and maybe an isolation autotransformer.
I highly recommend the KSGER T12 soldering iron it takes Hakko t12 tips it is very fast and has auto sleep and motion activation when you pick up the iron...You can also calibrate each different tip individually
I had one of those switched though because it was leaking current. Like leds blinking while i was soldering them :). But maybe I just had a bad one.
There is a fix to ground the chassis
Thanks for the video and hope you feel better soon! P.S. I think you should really consider getting a thermal imager too. I have the UNI-T Pro and it is very useful!
Hi , can we use MECHANIC Short Circuit Detector Power Supply instead of linear ? thankyou
Always keep safe sir
I love your channel
Very informative
Gobless and keep safe
New arguments triggered my attention back to electronics. 💯
I recommend to you for soldering iron JBC CD-2SE for hot air Quick 861DW and for linear power supply Korad Ka3005d you cant go wrong with this combination.I have been using JBC and Quick more than 4 years and i am very pleased with both.
Sorin mentioned a supply without short circuit protection. Has the Korad Ka3005d got that?
@@islewebdesign1150Yes korad doesnt have short circuit protection.
@@orionshkoza6162 Thank you!
Nice Camera you using,, what make it is?? Please advice on that.
At min 36:35 in Romania is called "clipici" :D . And it was used alot for cars to keep the battery warm, then the guys changed the caps, rised the frequency and they were using that on TAXI cars to rise the fare when you click some button. That one was called "maimuta" :D
Welcome back boss, quick recovery master sorin
Hi Sorin, i think you should try the short killers i don't know if you ever heard of that but it's a great alternative of linear power supplies it's a tool with a small case and it can only be used to find short circuits and it's cheap !
How did you got on with them solar panels and if you still got them How good are they now in winter im building repair show in my garden and thinking of using them to power it up but i don't think I'll have enough power and batteries 🤔
I would like to know why is it so bad to have a switching psu for short finding? I assume it got something to do with ripple but.. what exactly?
time flies when you're having fun :)
Sorinnnnn please which power supply should i get from Ali ??? Same as yours ? Or your was faulty on those video in two parts ???
Don't cheap out on Solder iron tips. Solder iron itself is not expensive.
Yihua ps-305d, I'm using it.. and I think is linear because I remember that it has only a big transformer and a bridge rectifier. Is it correct? If it's necessary, I can send all internal photos on discord group
for the power supply : a linear one would be at 10kg, a switching one at max 3kg
you can't have something light with a linear one
I have got the same power supply. 😁The one with the small button in the middle.
We are watching you from Oxford.
Maybe we can offer you a cup of tea someday. Dan&Marius. 🤗
soldring station WLSK8023C (you can use any 2.5mm copper wire for the tip and grind it into any shape) + ETP5
I can recommend used monitor arm from ergotronics which is brilliant for moving microscope around.
Thank you Sirin for advice 😊😊😊😊God bless you sir.
HI Sorin my choice of microscope with attachments AmScope - 3.5X-90X Trinocular Stereo Microscope, 0.5X and 2X Barlow Lenses, Boom Arm Stand + 144 LED 4 Zone Ring Light - SM-4TZ-144A, I pickup a power supple similar to yours ,used for 20 pounds came with no protection , scope is ok but I'm not used to a microscope and am practicing
Hello sir, good luck and continuation, thank you very much, welcome 🇲🇦☺️
Hey Sorin!
I am a newbie and I have my father linear power supply, but w/ short circuit protection. ( Manson Model: EP-925)
What's your opinnion? Should I sell it and buy other one?
What type of phone heater and air compressor are you using please ?
For microscope the stand cost more than the camera, I can zoom into anything and micro-soldering as long as I can see it with stability. I have many stands - this is important! Depending on what you buy, some microphone stands will do a lot of good, I can do everything he and others do very well that are well financed - you need a PC and at least 1080p 50x zoom camera and a very stable stand. . .. for me the stand stability was the problem - once i fixed that - bam win.
I would say, first priority microscope + support + camera (agree with HDMI if you need to record buy a cheap hdmi capture), original soldering tips the soldering station can be a Chinese clone, agree with the power supply and tweezers, I use a cheap atten hot station.
Hi Sorin the circuit you showed looks like the flip flop which has two steady state but my mind is rusty , can be use for many application many can be use to store ones and noughts , hope you all feel better soon Jim
Seems to be a multivibrator circuit
I love electronics so much and I am looking for resources to learn. Can you make a series of videos and teach all of us who are interested? Beginner's level please and move on step by step and in details. You have great knowledge and would be great to transfer it to others.
I feel the exact same, I've only just gotten into the world of electronics repair from last year, it's so diverse and vast that the only way to learn is with time and practice...we are kinda like world class body builders....but for electronics XD
Agree! A few episodes of a beginner's electronics course, starting from scratch, would be great.
Much love for you boss 🤍
Hello Mr Sorin.
Glad you better. What can you use as an alternative to isopropyl alcohol?
Ethanol works fine, so probably strong moonshine would work too. Methanol might work OK (but you have to understand the dangers).
Various solvents like turpentine or white spirit can dissolve flux, but they can also damage the components (like remove resistive coating from resistors)
As a laboratory power supply, I can recommend the KORAD KA3005P (30V, 5A) or the more powerful model KA3010D (30V, 10A). Of course, both are linear. I had the 5A version and it was doing great because I repair car amplifiers and I replaced it with the 10A version, because 5A is a bit too little. It is a pity there is no 20A version. For this price, there is probably nothing better, because I was looking for a long time. 😁
The fans run depending on the load and are silent when you do not put a heavy load on it. 😁
Sorin mentioned a supply without short circuit protection. Has the KA3005P got that?
Re Linear DC power. Tenma one from CPC is good, not broken yet for 2 years, with warranty. Have a look.
Lucrez la un service GSM și folosesc următoarele: stație de lipit JBC CD-2SQE (nu cred ca se nai găsesc noi, doar update-ul care se termina cu F), stație de aer cald: Quick 861DW ESD și o sursa de la Wanptek DPS3010U și își fac treaba de minune . Stația de lipit și stația de aer cald sunt de vis, le recomand la orice oră
I have a linear power supply and the problem I have with it os that you can't turn it on with anything connected to it, if you do you will fry it because it sends a 20ms 15 volts pulse and fry your equipment, it happened once and I checked it with my osciloscope and thats exaclty what I saw with it, it jumps to 15 volts then stabilizes to The voltage you've set
it's a cheap one tho, I bought a switching one and it doesn't do that, I checked it underload and it's stable enough for me
Sorin can we mod cheap power supply to make it lenear ?
oh sorin on job i use a jbc soldering iron till now it was the best i've ever use. you khow how it is to have the temperature you need at the tip? but the price ...700 euros
The cheap (linear) power supply I use has overcurrent protection which is indicated by a LED. Also you can clearly hear the fan ramping up and a relay engaging. So you know there is a short and also the device is protected from excessive current. I don't understand why you wouldn't want that feature.
Welcome back!
It is a basic flip flop circuit using standard 2N2222 transisters , current limited resisters
46:00 diode gone wild 😂
Sorin My teacher am happy for you,God bless you
Oh and by the way i hope you and your wife feel better take care old man.
Also I am one that listens to your program to the end
You said HDMI camera is better than usb. I'm about to buy some HDMI camera with stand for about 220$. Is there big difference between cameras like that and trinocular that you use, or atleast in similar price of that budget i'm about to give for that camera?
Good tweezers and cutters, alligator leads, wires. bench p.s. good iron, air station good flux and wick, meter that is fast and has diode ,cap, ac,DC current.. AliExpress component identifier. Good magnifier. Loupe on good phone. Thermal cam with decent resolution. Decent bench space with everything accessible. First thought Important to me.
You know what i've bought a number of tweezers and i would describe a number of them as "good" but i'm still using the first real ones i bought many years ago just the cheapest, i'm just so used to the feel that i hesitate to replace them. They're looking pretty manky by now though, like i've been able to keep the working area of the tips at the very end largely in shape, but otherwise, oof. I look at them and think "i should throw them away" but then they're also the first ones i grab to use every single time.
I'm also hesitant to replace my old meter that i've had for 15 years. It's got continuity buzzer (unlatched, fast) on 200 Ohm scale, which is something i absolutely love, there's barely any voltage and forced current so tiny i'm not terribly afraid to knock out modern semiconductors when using that. Diode mode tends to be much more harsh, being able to actually light up LEDs. Though being a Mastech it's just a tad closer to professional tools than outright cheap stuff, it's also seen some unsightly abuse by its previous owner.
Thermal cam is i feel a silly expense, like, there's so many other techniques. Cold spray, iso spray, flux vape, hand, cheek, i mean sure you can put it to decent use, but it's not anyhow critical. The most critical thing and one i've been grappling with the hardest is workspace organisation for the tools that you already have.
Also i've seen someone from another trade do a tablet repair just recently and they have struggled because they didn't have precision screwdrivers, nearly failed on that account. Oof. So that's definitely something not to forget, alongside pry tools and such. I also absolutely love throwing things on the bed of my 3D printer to unglue things, among numerous other nice uses for the machine, so some sort of flat heating device like that may be well advised. I don't think 3D printer is particularly useful for electronics repair, though it sometimes is, but it's also a giant commitment on the skill and effort fronts that i don't think is good for every repairman, like you'll spend time repairing that piece of shit regularly, so if that's what you live for, sure, but otherwise it can be more trouble than it's worth.
One thing i absolutely would love to have and don't have yet is a scope. Well i mean i have a JYE toy one but it's hardly enough. Was tempted by Fnirsi but ooooof, such a janky tool. Next up are Owon and Hantek, they both seem adequate enough. Perhaps it's not a thing you need much with laptops or phones, but i really do something else, including analogue gear, audio, classic computers (8/16-bit), that this is actually a thing that is super helpful, plus for reverse engineering stuff. With classic computers and various retrofits into them, a 3D printer is also more useful, it can spit out key stems for the keyboard, brackets and fascias to install storage and video conversions, these sorts of things.
the market is moving very strongly towards switching power supplies, as they are more power efficient when you want to just power stuff
I hear people saying they are fine for lab benches too, there is a bit of ripple noise but the electronics will take it just fine or so they say
can you elaborate on how exactly would it set you back to use one of those? maybe a comparison/test video?
HI sorin ,i am confused you already said in previous video power supply without short protection is a car without breakers and now you say you dont need a short circuit protection because you cannot found a short because it disconnects the power so plz reply to me because i need to buy a power supply
Cu explicatul schemelor electronice(de la cele mai simpliste până la unele mai complicate) ai putea face o întreagă serie. Pentru mulți ar prinde bine.
Yap 😁
Hi Sorin, theis item from ali looks like your old scope arm: FYSCOPE Articulating Arm with Base Plate
I find elelto and electronics fun and interesting and I want to learn as much as possible about it and now I can walk. I always say: a day not learned is a day wasted
Agree, I'm using on daily basis cheap stuff to fix. Including the microscope about £100 HDMI one and preheater about £100 as well, the rest was cheaper. Even my thermal cam was about £50, and hot air either £40 or £60 :D and it's an air pump, not a fan. I use gel flux, it's just much easier for all microsoldering, so Kingbo or Amtech would do.
What thermal cam did you get for £50?
@@fadetonoir6152 It's an eBay purchase and a low resolution of 8x8, but have payed for itself. You can see on this YT (my one) that I use it with some of the repairs.
It's more like a module with a micro USB connector and a display, than a proper cam to be true :).
What about a cheap osciloscope?Anyone could recommend one?
Hi sir how are you feeling now I thought good Friday and taking some rest and mostly praying anyway be safe
Thank you for all the useful information in this video with regard to tools and electronics. As for your wife's covid, she has probably gotten it from you. It's wrong to assume there is no more covid in this world, as s lot of colds nowadays are actually covid related. Get well soon
That first circuit we used to call it multivibrator. If you say that now girls scream. Wonder if they love electronics that much lol.
14:50 Actually I think the best way to find a linear power supply is to look at weight. Doubt they put concrete bricks inside yet.
But what is exactly wrong with switch-mode power supplies? We're just repairing stuff (that has switch mode power supplies itself), not designing any RF-equipment and such where all those noise might come through and cause confusion.
Actually I am curious if is it possible to modify a welding inverter into lab bench power supply of sort. Welders are cheap these days, output insane amount of current. And if your circuit doesnt work you can always enable firework mode
you right im searching to buy cheap linear power supply and its like impossible to find one to its not astronomic price :( I would like to purchase some up to 100$ and cant find it anywhere :(
Why is switching power supply not ok? Because of the short circuit protection? You can use riden dps5005, 5020 that is programable buck converter. You can set the amp limit and will not turn off when short is created. Also the more powerful RD6006, rd6012,.. will not turn off when short is created if you set it so. And cheap server power supply is a great and cheap option and you have a perfect power supply.
I love you Sorin... Are Star In Electronics
Yeah articulating stand are really nice, me too spend money for proper microscope
Hi Mr Sorin. What is the difference between linear and switching power supply?
A linear power supply has a transformer, no switching involved there
@@electronicsrepairschoolso, when a switched finds a short go to prorection and the linear no?
not always, some linear power supplies have short circuit protection also
At 30- mins, Sorin clearly explains the difference between engineering and electrical mechanics - northbridge is mechanics - beautiful mechanics. But to understand how things works and the tools as an engineer Sorin. . . . this is the whole worth of the video - understand the issue - don't just fix the symptom. . . . ..
Covid is not gone. I had it at the end of last month and it took me 9 days in total to get a negative test. I hope that she has a mild version as its not a very pleasant thing to have.
I'm using the 46 euro power supply ( switching) on last 5 years without issues doibg 2 / 3 repairs every day. ( th 30v 10A version )
Means you can find short circuit with it?
@@abdurrahmanyahaya1 yes.. caps are becoming hot...
But which product are you using?
Same happened to me 2 weeks back, I thought covid was gone from here and boom, I caught it 🤣🤣 all healed up now tho 💪
da am cumparat si eu de la auto moto velo acel dispozitiv cu 2 led uri rosu si verde si l am montat pe dacie acum vreo 30 ani
I have the "Nice Power" one 30V 10A and its as dumb as a brick. No cutting off current when there is a short. Good for voltage injection. Though I bought it directly from Aliexpress not Amazon and I paid like 65€ not 120£...
This is a flip flop circuit I learned it when I was 12 from lady bird books series but incandescent bulb no LEDs back then
Sorin, take a look at this power supply: UNI-T UTP3315TFL-II. I watched on youtube a teardown and it have a transformer inside. Found it on ebay for about 70€!
Can a linear power supply also have ripple?
They're fundamentally going to have small but nonzero ripple. Any form of rectification creates switching noise thus ripple, you're necessarily going to have that on your secondary, and there's only so much noise rejection any circuit, analogue or otherwise, is going to provide, there is always a path for a little of it to get coupled over, though for a linear regulator, that's going to be like 60-80db down, really little ripple comes through ideally. Plus the regulation noise which can also imprint on the ripple rating.
Sorin, be carefull on that UNI-T model that you have choose. As i can see, you ordered the UT8802E. On the Picture it showing i think the UT8805E. So be sure what you're ordering.
The UT8802E price is around 160-180 pounds. The UT8805E is way more expensive.
Why doesn't your OBS have a pause button? I remember you wanted one.
If it doesn't show up, make sure recording (settings > output > recording) isn't set to "(same as stream)" and that the encoder isn't custom. Encoder should either be NVENC or X264.
NVENC takes fewer resources (relies on graphics card) and x264 is better quality but relies on CPU.
That was 10 years ago :) Now the new nvenc is few times over the x264 www.nvidia.com/en-gb/geforce/news/geforce-rtx-streaming/ Right now, nvidia has a dedicated 2 pass encoder on a graphic card, and the new 4000 series has 2 dedicated encoders. Also obs can direct access the nvidia chip, so streaming and recording, it will take 0% from cpu and gpu
"is good to make videos and get bored together", that's both a very good joke and very very untrue :)
I'm not sure if I passed the tests. Probably not. I get how some things work but others are always unclear. I recognised the second diagram, but only cause I´ve tried (and mostly failed) to fix old CRT TVs, plus your videos on power supplies, so I am familiar with those. You put any random other on screen, and I would had no clue.
Same goes for many of the components. Even resistors as the one sensing overcurrent... very often I don´t really know how they affect the flow of current when transistors or mosftet are implied.
Sorrin if some 1 is just starting out on Electronics then they DONT need expensive microscopes or expensive multimeters all they need is cheap gear to start with think back to your Piano if they need a microscopes then a smart mobile phone will do with zoom and for a maltimeter a cheap 1 from amazon or Argos same with tool and soldering iron