To learn more about electronics in a different and very effective way, and at the same time support this channel, go to Mr Carlson's Patreon page, click here: www.patreon.com/MrCarlsonsLab

You know hes a pro when you see him sitting inside a 70's lunar lander!

Never seen anything like it. His first observation is the visual inspection with emphasis on build quality and quality components. Then the design engineering layout of the board. How he can identify immediately each subsystem and it's component and it's function. Then drawing the circuit and explaining the fundamentals from his intellectual mindset He was born to be a great teacher in electronics/electronic technology. Very few can explain or repair down to the component level. Keep up the great work !!

I must have missed this one ,just watched it and what a brilliant explanation,im quite new at this and if you cant understand something you tend to put it to one side watching this has put my brain into 2nd gear, regards from across the pond 👍🇬🇧

I find electronics boring but what I do like is old technology. Watched one of Mr Carlson's videos and was impressed with his knowledge. So I watched another and another. Now I'm hooked. Nothing more satisfying then to watch someone who is extremely knowledgeable and good at what they do. His confidence that he'll fix whatever the problem is very impressive.

"If it does not work we will make it work" I love the confidence you show on problems. This was a very education video Paul. I always learn things from you. Like PLL circuits SMPS is another one of my weaknesses. Your hands on teaching method really helps. Thanks for another great video. Buddy

I swear I watch this Canadian equally for his understated enthusiasm and much for his obvious PhD. Chops. Carry On Sir.

I really appreciate the orderliness of your explanations. Very clear and precise and organized, just like electronics.

WOW, I'm just learning on my own from KZfaq and books, on this sight with the explications you provide I can deal in my mind what to do and what not to do, in troubleshooting but I know I must be very careful to take my time a listen ,observe, and be patient, thank you young man for a better day in my life with your teachings. miguel

Well done, Paul! Great explanations. In the most simplest of terms, It could be stated the SMPS is the modern and sophisticated version of the old vibrators that supplied HV to auto radios in the 40's & 50's. Keep up the great work.

oh WOW.... what a lab... 11 seconds in and I had to pause the video to fathom in the amount of devices you have skilled over the time with your profession.

I can't say enough how well you are to explain complicated electronic devices with your easy to understand language and perfection, learning new things every times by watching about what was my specialty when I was younger.

Jesus - I so much love your Lessons - done not only with profound knowledge but calmly and comprehensive as well. Still (in terms of amount of Subscribers) very underrated channel.

4:55 "If it doesn`t operate, we will make it operate, not a big deal" :)

Mr Carlson you are a reference of the very best on KZfaq. I expanded all the collapsed fields and saved to PDF to get a pure jewel of your comments/observations and those from all the viewers that also wrote brilliant and important comments/observations. It is a 73 pages PDF that I will read again and again for years to come.

GREAT job. At the plant, we used to just toss them. I have been a tech for 40 years now, 28 of them sitting on a bench repairing 2-way radios. Again, you are great at explaining and appreciate your videos.

I wish I had never found your channel. I find myself watching your video's to all hours of the night and falling asleep in my computer chair. Although I originally came here to see if I could troubleshoot myself why my PC's corsair digital SMPS (AX1500I) at times goes into an infinite reboot, unless I turn off PS for some time (assuming discharging caps) and then restarting. I find myself watching being mesmerized by your knowledge. Sure wish I never dropped out of EE classes 41 years ago.

A piece of Gem. This is called the teaching madness. No words, just request to keep up the great work 👍 Edit: jem to Gem

I'm hoping to see more repair videos. Gotta love your confidence you can identify and fix the issue -- power supplies always seem to die an early death.

I came here....4 years later......to repair a similar Power Supply. Mission accomplished thanks to this video!

Thanks. You just saved my oscilloscope - I am sure sooner or later I would have made one of those mistakes.

Actually this is the best educational SMPS video for me. I have watched lots of them, they just talk and reading descriptions which you can find in datasheets or some papers easily. They dont describe every part of circuit just keep goin" this is the SPMS and it turns voltage yada yada yada...."

Your videos are incredible. The information you present and the quality of the videos is really second to none. Excellent stuff!

Hands down top 3 best SMPS educational video on KZfaq.

Great job! You are a great teacher. Well organized, great communication skills, knowledgeable and clear. Focused on the subject and to the point. It's always a pleasure to watch your videos. Congratulations!

You have the coolest lab on KZfaq as well as explanations.. thanks

well done and geared to someone like me with fair understanding needing refresher but have not toyed with some of this stuff in more than 15 years like they say """" if u don't use it u loose it """ am now at point in life i am hobbing in HHO GEN., power plant pulse and stabilizing power output from unstable supple v.. this gives me things 2 think on with other life experiences. ie: associate degree in computers & electronic, ham operator , service mechanic, hvacr tech, plumber , service tech n butcher in 3 packing houses, boiler tech . and "JACK OF ALL TRADES "BUT u no the rest. TY VERY GOOD

Outstanding example of a teaching video. Including the safety issues in a very direct way is particularly helpful. Thank you.

Awesome job on the basics of switch mode power supply operation! Just now came across all of your videos and thanks for taking the time to make them. I've been doing electronics repair my whole life and still learn something new every day.

Thanks Mr. Carlson for your gift of knowledge. How can anybody give this gentleman a thumbs down. When I was young, I had to ride my bike for miles to the public library (L.A.,CA.) and take notes after doing an extensive search for the correct information so I could use it in my guitar amp designs. I know that sounds like a joke but I'm serious. Learn what you can!!!

excellent video. you are a real pro. Happy to see that your number of Patreons is growing. You really deserve it!

Many thanks for your excellent tutorial. I was a TV technician 50 years ago, repairing tvs to component level. Then I moved up to Avionics tech job and later on to an aircraft engineer's job. I retired after 40 years without board level repairs. After retirement I find a pensioner's life extremely hard. I am refreshing my electronics knowledge to be able to repair TVs or Computers.Please keep up the good work. aftab ahmed. London

THANK you for taking all that time to make this video. im the type that has to learn something every night before bed and im new to circuitry so this is amazing. keep up the great work

You're a really great teacher. Wish you'd been around Carleton University when I took Electrical Engineering there. :) I got my first oscilloscope when I was a kid. It was a World War II era Triumph I found at a garage sale, and I used it to repair the 1950s-1980s TV sets I would get at the curb. Being that the Triumph had only a two prong plug, it wasn't grounded, and I used to connect the stupid thing with reckless abandon everywhere in a TV chassis. What's the damper tube signal look like in a 1971 Admiral 21" delta-gun color TV? Let's find out! Looking back and realizing that the whole chassis and body of that oscilloscope was now live with B+ Boost, I cannot believe I didn't fry myself. But, in my defense, I did realize even as a child that electricity was to be highly respected, always used the one-hand-only rule, and never touched the two units at once. I learned the hard way about oscilloscope commons when I got a 1970s-era Phillips scope - which had a third prong. I connected the ground lead, turned on the set I was working on, there was a loud hum, and instantly the lights went out in my bedroom. It took a while to get the smell of burnt scope probe wire out of my bedroom. Thankfully, no other damage was done. In the early 1980s, lots of houses in Ottawa were having their furnaces converted to natural gas. Family friends gave me an oil furnace ignition transformer, with no idea how crazy-dangerous that thing was in a ten-year-old's hands. In fact, they didn't know what it was, they thought it was a motor - which itself would have been dangerous enough. When I made a little arc with it and heard the power of it, I unplugged it, and it became a toy to be operated only in the back yard with the distance of the lawn mower's extension cord between me and it. That was my own instinct, not every child is going to have that respect. I think I've had about three unintentional electric shocks in my life, amazingly nothing serious. One of them helpfully made my first car run better when it told me that my spark plug leads were shot. Most people aren't so lucky. Parents need to be alert to their kids working on electronics, whether they're TV sets or microwave ovens or guitar amplifiers or switching power supplies. Brushing against the horizontal output tube's anode cap on that old Admiral could have killed me instantly. I was afraid of electricity - still am, as much as I love it - and that has kept me safe. By all means, don't stifle the kid's interest in electricity. Remember that electricity is billions of times stronger than gravity and the fundamental force of nature that is right now keeping you from falling to the center of the Earth.

As a basic power electronic repair engineer i realy like when i watch a professional electronic engineer!

A very informative video sir. I am so glad that you stress the safety side of working on SMPSs and the use of isolation transformers. If you're lucky, the blue flash and the bang just gets your attention. If you're not lucky..........................

Just went by patreon, and started your talkthroughs series there. Awesome stuff, thanks for the content. :)

I keep watching your videos. Now i could actually follow this video. From what i learned so far from you and what i knew, this video served another great lesson. I'm pretty glad I found you. Your a teacher I can follow and learn from. I will headed to Patreon and support you. Its only right. I gain so much from your videos.

My boss didn't like me to fix things like power supplies, "it's a waste of money". I did anyway, bought Solas for most new projects, never had to fix one, they are bricks. Excellent video, as usual. Kudos, and thank you.

Once again, thank you Paul, for explaining electronics, in such an easy to understand way!

Looks like I have a lot to learn. Great video, I stayed with the video even though it was beyond my base knowledge.

The ONLY caution I would add to your Video is to NOT handle a Power Supply without FIRST discharging the CAPACITORS . ALWAYS assume they are charged. That was what we learned in the Navy... Just my $.02.

I agree with you calling it Solder. It's the same as welding. Pronunciation is correct.!!

Probably the best explanation I've seen on youtube of what the transistors are doing within a circuit. I feel my understanding has made a quantum leap forward. Many thanks and certainly justifies my joining your patreon course.

wow! Genius in electronics, genius presenter, genius teacher! keep it up!

What a fantastic explanation! Thanks a bunch!

I really enjoy the way you approach all of your repairs for us common folk not in" the know" can still grasp the fundamentals being applied in actual applications. Thank you for spending what I'm sure is very valuable time to put this together. Have you ever worked on high frequency Inverter GTAW (TIG) Welders? Would you ever be interested in showing how one is repaired if so.

This channel is one of the few remaining bastions of quality hardcore electronics content on youtube. Keep up the great work!

Good job ! I have a better understanding of a switching PS now. Thanks for the video.

Thank you bro....thank you for teaching us....bless your heart.

Hi Paul, Thank you so much for sharing. ...I have to say, that I find, the videos you make are more than excellent. Your tutorials, presented with your obvious and observable depth of knowledge, and delivered in such a calm and measured manner, makes watching them highly educational and thoroughly enjoyable. Thanks again.

Good job for making this video. There are few people videos about SMPS, and most of them they are not explaining so good. Keep up the good work ! Thank you !

just say brother, thank you for your kindness to share and teach us.Yesus love you

I know so many have said it already but I have to say it again Thank you for all your fantastic informative videos .. Please keep em coming..

Seriously, the first 5 seconds of the video i thought this guy is going to tell us how electronic troubleshooting in outer space is fixed. Very nice and informative video.

I have watched quite a few of your videos and I have learned alot from them. Even watched some that are over my head and still have learned from them. Thanks. I will continue watching.

big thumbs up mr Carlson

I often find it useful to just inject low voltage DC from a bench supply, instead of running full mains AC, while diagnosing a SMPS. That way you can safely check the switching and probe around as much as you like without having to be really careful.

Mr. Carlson's Lab looks like he is the commander of his electronic space lab command center. His commands on the subject will make any problems be afraid to crop up and flee.

“If it doesn’t operat we’ll make it operate” supreme confidence!!

As soon as I opened this video, the Electronic Equipment all around the Teacher was almost reminiscent of the Flight Deck of a 747.

Really good like everytime thanks Paul /Paul from Germany :D

Enjoying your well done videos and projects, thank you for the excellent quality, theory, testing, and techniques. There are a handful of providers doing this and you are one of those in the "Top Ten" in the world from my view.

Hes very nice to listen to . Ive literally never said that before . i have a hard time focusing on people when they talk or explain things but man every word has my attention

good stuff thank you mr carlson

Thank you, can you make a short video how to connect the oscilloscope, because in that video you just explained without showing how and thanks again

Another great video. The isolation transformer discussion was super enlightening. Recently I used an oscilloscope on a 1956 Admiral phono push pull amp that uses a power transformer. Figured I didn't need isolation. With the scope connection to the speaker (backwards) it created a hum. Even with the power switch off. I located a capacitor between the line and chassis ground caused it when the non polarized plug is inserted in reverse. Looks like isolation is good no matter what type of equipment is being tested. Thanks again.

Just very well done and absolutely great to have people share knowledge like this. There is life on the internet. Thank You, I am with joy going through your videos. Great job. / Patrik, Sweden

21:35 "And you might even destroy yourself" Classic. I have been earthed. Sent to ground. The final fuse has gone away, it gives and gives, we could go all day ;)

I'm heading to patreon

Thanks very much, the first guy who explain me a power supply in a way that I can undertand

Best explanation of switch mode power supplies I've heard - Thanks!

Will you believe I have never seen a switching power supply without a optic coupler in all my working years ? Even retired I'm still learning ! :)

Great video Paul, i like the inclusion of the oscilloscope. I recently got my first scope but not brave enough to use it fully yet, forgive the newbe question but could or should i use the scope on the same isolation transformer as the device under test? my area of concern is being tied to ground and frying something?

Thanks! This is the first time I actually understood SMPS.

Your videos are always so helpful, thoughtful, and thorough! Thank you so much Mr Carlson!

That’s a curious warning about probing a live circuit without an isolating transformer. I just watched ElectroBOOM probe his industrial grade light sensor that was being powered directly from the mains and nothing went wrong whatsoever. 😇

18:54 Great advice on how NOT to hook-up your Scope's common lead to an isolated PSU circuit.

Brilliant explanation once again. I really struck gold when i dropped onto your channel. Thankyou

Thanks for making this video Paul. While I have never used dual channels on a SMPS I now know the dangers of doing so.

I think it might be fun to power and old tubed car radio with one of these. Paul I know you would be able to dial that in. ;)

I would like to see from you one day teaching how to use an oscilloscope

Hello Paul, thanks for you channel, it's very good. About 50 years ago I built a 20W + 20W Mullard amplifier with a great deal of help. I Googled it the other day, it came up with 'National Valve Museum' - Gawd that made me feel old. EL34's Ah. I won't go into details but I was lying underneath this beast when a wire dropped across my nose. It was 410V. I was holding the earthed chassis at the time. You are very wise to warn people. If I remember correctly I said "Golly Gosh", "Fancy That" and "**** the thing". Even though most of your projects are well out of my comfort zone I do enjoy watching a craftsman. So many 'presenters' on You Tube are - let's just say 'overpowering' . Wide open spaces surrounded by teeth springs to mind. You are a pleasure to listen to. I have taken up basic electronics as a hobby again. I'm in the throws of converting an old 120W Monacor line amp into a 40V - 6A power supply. It came from a pub, a pint of beer didn't do it any good. Most of the 'gubbins' are fine. I'm going to try the TIP35C's it has with an LM723 but I have 4 x 2N3055's on standby. I'm also fitting a 400W SMPS - variable A & V. I don't mind fan noise. All I have is a Fluke, old but serviceable. Your video on SMPS and Linear power supplies was very interesting. I made a Joule thief and a radio ham friend went absolutely apoplectic. I told him I was going to make a 100W one with a long aerial but wasn't quite sure where to attach it. He thought I was serious - OOPS! Thanks again for the videos they are very much appreciated.

Another great video, helping me a little further forward with understanding how the SMPS works. Also a little closer to fixing my own SMPS without blowing me, my scope or it up! Thanks Mr Carlson.

Deaf viewer here, would love to see subtitles to understand you better.

Switch Mode Power Supplies, AKA Voltage to Smoke Converters.

you are the first one of ALL the SMPS videos that has acknowledged "HIGH CURRENT LEVELS" they all say high voltage. It's not the voltage that kills you it's the current, considering that static shocks are in the 2kilo volt range, but very low current probably pico amps. 1/2 amp across a heart can kill.

A great way to teach. Love your collection of vintage and leading edge equipment. You are a great Teacher Thanks much - RMc

amazing tutorial! please do a repair to a pc atx smps ! nobody has done that..

Every time I open one of your videos I think I accidentally put on a live feed of the ISS

I'm liking the new format with Patreon Your tips on what NOT to do are invaluable.

You are mostly the best teacher for electronics learning in youtube

only 2:43am, plenty of time for another video

I need to get buttons made up that read "You're doing so at your own risk".

Awesome video. I like pausing when you show circuit diagrams and trying to figure out how it works, and then hearing your explanation afterwards. I will be checking out your Patreon courses, cheers.

Me again, Love what you do been doing. working my way through your videos. Learning, Learning, learning. Want to join your patron group but every dollar is tight right now. Please know that what your doing is appreciated !!! :)

Ok I ordered an isolation transformer.

If you are following along, yo are doing so at your own risk !

Although I am just starting off into this Intriguing World of Electronics, I now know that I NEED to keep PURSUING this field; especially when I can listen to a man such as this (he is truly amazing by the way) and I realize that 3+ hours have gone by! But the crazy thing? I still don't know what the hell he's talking about!haha I love it Yep, ...I'm definitely on the right track. 👍😉🇨🇦

Best explanation for half bridge smps on youtube excelent work.And one thing to remind that you forgot to explain how te feedback works so it can stay regulated,but overall great work.