Let's speak about tools and skills. Can you take my test? :D
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- Опубликовано: 29 сен 2024
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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
New arguments triggered my attention back to electronics. 💯
Thank you Sirin for advice 😊😊😊😊God bless you sir.
. 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
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.
Hi , can we use MECHANIC Short Circuit Detector Power Supply instead of linear ? thankyou
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.
It is a basic flip flop circuit using standard 2N2222 transisters , current limited resisters
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. 🤗
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'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?
You want a linear power supply, look at the weight. A linear power supply will have a heavy transformer where a switcher will be rather lightweight in comparison. It's going to be difficult to find new all linear supplies, better off looking for an older used power supply.
It's an astable oscilator.
It's called an astable multivibrator.
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
What type of phone heater and air compressor are you using please ?
3:06 yes you could dig a hole with cheap shovel in few weeks or you could do it with a excavator in 10 minutes :) I think I'll better invest in good tools witch will last longer and during that time I'll be happy using professional tools instead of cheap crappy ones :) a month ago I bought aixun soldering station with cheap cartridges, the station is 5 time cheaper than JBC soldering station, but I bought jbc tips and this is it I have cheap station witch uses heating element witch is main component in station witch affects all work :) but in near future I'll buy JBC station :). If you trying to repair something and have no money no skills maybe cheat tools is an option...
korad supply is the best one
What about a thermal camera? You are always saying you could use one. I use mine alot for finding shorts.
ok Sorin, I am getting there. I have my hot air station my soldering station, my microscope and my power supply. whats next?
knowledge😉
🙏
Take care
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.
Circuit basculant astabil? :)
Thank God you're doing good and I pray your wife and the kids would be safe in Jesus name Amen 🙏
why don't you just draw such circuit diagrams yourself with KiCad?
That way you could explain more and you wouldn't always have to search so much...
Flip flop
Hello . Do u have any email or something i want to make some questions please
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).
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.
Don't cheap out on Solder iron tips. Solder iron itself is not expensive.
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.
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.
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!
Hi Sorin, theis item from ali looks like your old scope arm: FYSCOPE Articulating Arm with Base Plate
if you want to get rid of cv19 just toss out your TV
I love how you search microscopes earlier and by 44:19 they are posting ads for Amscope as you browse. Great video.
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
OBVIOUSLY- I'M BORED AS WELL!.. With that said:...
@49:45 That's not 100lbs! It's less than 5lbs! I can hold it above my head with just one hand! So obviously it's not much heavier than a ridiculously-enormous bag of potato chips!...
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
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£...
Is 30V 5A linear power supply enough, or should I go for a 30V 10A linear supply?
Hi Sorin, I bought Asus Rog scar 17 costs €3000 in Germany. Unfortunately I poured liquid on it and it Seemed to have shorted the motherboard components. New Motherboard costs €2500 which I cannot afford. The repairer I sent to could not fix it. Could you help me please? I am ready to pay in excess to 600 £.
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 ❤️💻📱
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.
A cheap t12 iron, a good hot air station, a decent microscope, thermal camera (it’s just easier) a linear PSU, cheap multi meter.
Time to watch 100h of repair videos….
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
You said HDMI camera is better than usb. I'm about to buy some HDMI camera with stand for about 220$. Is there big difference between cameras like that and trinocular that you use, or atleast in similar price of that budget i'm about to give for that camera?
Another recommendation for Flux is MG Chemicals 835. It’s nasty if you get it on your skin (sticky as hell!), but it cleans up well on the boards and leaves the shiniest of shiny solder joints 😁
I love electronics so much and I am looking for resources to learn. Can you make a series of videos and teach all of us who are interested? Beginner's level please and move on step by step and in details. You have great knowledge and would be great to transfer it to others.
I feel the exact same, I've only just gotten into the world of electronics repair from last year, it's so diverse and vast that the only way to learn is with time and practice...we are kinda like world class body builders....but for electronics XD
Agree! A few episodes of a beginner's electronics course, starting from scratch, would be great.
hello my name is Dennis my call is N8REY
I have been watching your RUclips repairs for quite some time I really enjoy it. I have an idea that might work for you as far as a microscope goes I use an articulating arm a phone holder HDMI output to a monitor it's cheap and works great you I can move the arm wherever I need it put the height whatever I need it and zoom in and out as needed so if you have an old phone give it a shot thank you for your nice program look forward to seeing you next one take care my friend this is N8REY
you right im searching to buy cheap linear power supply and its like impossible to find one to its not astronomic price :( I would like to purchase some up to 100$ and cant find it anywhere :(
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
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?
Hi sir how are you feeling now I thought good Friday and taking some rest and mostly praying anyway be safe
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
Amazon's search engine SUX really bad. And the method how the items are arranged sux really really bad.
That first circuit we used to call it multivibrator. If you say that now girls scream. Wonder if they love electronics that much lol.
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
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 😂😁😜
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.
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 !
Soldering gun, WTF - I only use them on cars where I need instant heat!!!!
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 want to see more fixes. Stop with Guybrust/Le Chuck shit.
Could be cool to teach people how to made diy a linear psu from computer psu.
linear power is always heavy something like 5Kg or more ...
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 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
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 😁
30:35 I think basics of electronics like power supply design etc is not that hard, but you must find IC datasheets (sometimes very tricky), invest time to reverse PCB tracks etc to build the circuit. Once you have a basic schematic, usually you have the solution. But getting there is scary/error prone and you need a teacher like you patiently explaining things. I would hand out a breadboard and a few components to kids, once they play with them, they could build. Most kids just go to a shop and buy an off-shelf battery charger. You have to find the few actually want to build.
BTW the oscillator is a very good basic circuit, but most things are monolithic IC based nowadays with a few additional components. So you go into the issue of getting a datasheet (I agree, most of them are similar so once you understand one family, you can apply that to other) and understand it. I found that less entertaining...
Your videos are better for learning :D
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.
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.
@5:18 NOT IMPLYING ANYTHING!..........Well maybe a; "BUT", ...I felt the same way for years, PAWN-SHOP TOOLS ARE AWESOME! But I had a chance to play with a Weller WXMP iron, .... it's micro size, and accuracy, was crazy! and the add-on tweezers...AWESOME! See if you can find someone that has one that you can play with for bit! It was the first time I ever ordered an expensive tool I couldn't afford!... NOW, if I can just save up the money for a used "add-on" hot-air tool for the two-port station, I can get rid of my $99usd 852D that's been working just fine for 8 years!
Microscope arms: ALWAYS build my own, by piecing "Ergotron" parts together. Parts & pieces I find on Ebay!
NOTE: "Wall-mounted" bases have less "shaking" than "Desk/Bench mounted" arms!
[DISCLAIMER]--Working with crap-tools for half my/your life instills and deeply-embeds something inside your DNA that a person starting with "The Best", always working with "The Best" , ... WILL NEVER possess! It's a very valuable "thing" that stretches from "Ability" to "Wisdom" and establishes a foundation that EVERY great-character is built upon!
Wow ok, cool, I got lost when you lost schematics
please make a video on dso. m so confused plz help
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.
7:03 it smells good :) like pancakes :D
you forgot one thing "a thermal camera"
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€!
time flies when you're having fun :)
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!
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
I could not find more from Germany
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.
switching power supply
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
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
"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.
The basics are your natural sensors. Sight, smell, hearing and touch. The next thing is a multimeter it doesn't matter which one cheap or expensive. A set of cheap serecurity bits and handle and a cheap soldering station. Most of all is to always keep one hand in your pocket whilst testing high voltages, as is confidance. The lack of skills and knowlwdge will come in time as will the better equipment. READ READ READ PRACTICE PRACTICE PRACTICE on your own devices first.
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
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?
you need a good solder iron, I used a cheap one, and it does not melt the solder, since I'm not a pro board repaired I can't afford to spend 1000+ on the microscope, I was looking at around £400 but still too expensive for a toy to play around.
Hello sir, good luck and continuation, thank you very much, welcome 🇲🇦☺️
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. . . . ..
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
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!
Nice Camera you using,, what make it is?? Please advice on that.
An alternating flashing light