4 signs that you are on DiodeGoneWild channel: 1) The cat is sitting on the schematics of cooorse 2) The cat is naaaaice! 3) Your pronounce automatically become weeeird 4) When you see dodgee power adaptor you say: bloody heeel!

@sayomsarkar2810

3 жыл бұрын

5) Even more Saaaalt!

@llagona

3 жыл бұрын

I saw this channel months ago during sometime, suddenly I remembered the pronunciation and got mad trying to find it again (I just didn't remember the youtuber's name). Just today, I had a suggestion pointing me to this channel. and instantly I subscribed. It relaxes me to learn electronics with his voice.

@Rastapapulus

3 жыл бұрын

Thanks for heeeeelp

Mate I've said this before, but can't state it enough.. I'm not even into electronics, but still find your vids interesting. If I was, however, especially if I was an elecronics student or something, I would find your vids an absolute fooking godsend. Your thorough approach to showing literally everything and explaining how everything works, along with your super in-depth knowledge would be absolutely invaluable.

No one teaches better than you, thank you 🙏

@Purple431

3 жыл бұрын

Electroboom 💥?

For those, who are familiar with control systems and PID controls, using the TL431 with it's capacitor and resistors acts as a really basic PI controller. If you derive the formulas, the LED current (so the transistor current also) contains an integration component regard to voltage error, and a proportional component regarding to output voltage.

@ryanb1874

3 жыл бұрын

Do you believe in, overunity, or being able to do more work with far less KVA ?

@raymundhofmann7661

2 жыл бұрын

I also would add that what he calls a "strange circuit" looks like a current control flyback topology, meaning the control signal via the coupler basically controls the current and thus the transfer function basically is one of a current source charging a capacitor being essentially an integrator. This makes achieving a stable loop a lot easier esp. in inductor continuous current mode. In discontinuous mode and pulse width control the power is a square function of pulse width, already making the loop optimal compensation only possible for a single load value, but in continuous current mode it turns into a second order system very hard to get stable.

Thanks Danyk You're the rockstar of SMPS. I usually don't watch content on a subject I'm really interested in while working on a different one. I've shelved too many projects as a result. But, an upload from you with a full SMPS schematic? It's just a risk I have to take. Micropython, step aside, Mr. Wild has entered the chat. Thanks for the upload. -Jake

Amazing explaining as always. 👍 I wanna see video about the forward converter power supply.. there are only 1 -2 videos about it.. if possible explain about them...

You are a master teacher.thanks million times for teaching us.

Wow! These two videos are great. I enjoy the details.

Your circuit explanation is excellent. Feel as if components are speaking about themselves.

I am from India and one of the subscriber of your channel, regularly see your videos of explaining SMPS.Like your work and explanation of circuit diagram.Nice video, waiting for your next video on SMPS.

Another great video, thank you very much. More like this would be amazing.

Very nice explanations! Congrats, Master!

Amazing video, Dan! Very clear, very helpful explanation. I join the request for a video about the forward converter power supply (more one)

@DiodeGoneWild

3 жыл бұрын

If I come across a simple forward power supply, I will definitely show it ;). Now I only have an ATX made as a forward, but it has multiple outputs and an auxiliary power supply, so it's not the best for demonstration.

Thank you very much for activating the subtitles !!!!!

Nice review and great explanation. Thank you.

Such a good lesson on SMPS, I just wish it would go on and on... Thanks

One of your best!

Gday from Melbourne, Australia I have been very much enjoying your SMPS videos, Its seems that most of my fault finding turns out to be failure in these supplies.. I (and likely others) would very much like you to make a list of common SMPS parts (parts that are handy for repairs on most SMPS) Thankyou for your great work

Great explanations! Thanks.

Very nice video❤❤❤Greetins from Lithuania❤❤❤❤

Nice explanation. Thank you.

🥰การเรียนการสอนที่ดีที่สุด🥰

It would be interesting if you could reverse and/or repair a NUS-002(EUR) Nintendo 64 power supply. It seems to be a very hard match, as all youtubers tried to fix it, they give up

@NK-nf2ym

2 жыл бұрын

It does not seem to have inrush current limitation because it produced som nice sparks when being plugged in.

Helpful video

Thanks for the info...👍👍

Thanx, you are the best

I like how the first warning is "This video is not intended for laymen"

@hexagonist23

3 жыл бұрын

Not intended for llamas :)

thanks for sharing

2:54 I have a PC power supply(230V/250W) in which is secondary side of that part connected via a metal housing and leakage was 120V/5A before I repair. Now is 120V/1A.

Great as always.

Dan, It's simply a combination of techniques used in flybacks with and without optical feedback - with a zenner, like in ancient mobile phone chargers.

Nice video with good explanation, you didn't add transformer windings to try our hands on. By the way what changes can one make to get 12v. Thanks

This kind of designs are current-mode, just like UC3842 and similar. Unstable frequency is not a drawback, usually. SMPS I build behave differently: under no load they oscillate slower, which helps reduce no-load consumption, just like sophisticated IC's. The more load, the higher the frequency, this one is a bit weird to me. MOSFET as a switch makes a world of difference: lower no-load consumption, higher efficiency. Supplies I build lately are all FET-based. As much as I like good 'ol BJT's; they are dogs. You can turn them on fast, but turn off opens whole new can of worms, like stored charge carriers and so on...

@giovinis

3 жыл бұрын

Hey boddy you can help me calculate how much turns need to tranformer ?

@mrjohhhnnnyyy5797

3 жыл бұрын

@@giovinis Search "Flyback 8.1" on Google. Then you can see my video explaining how to use that software

26:48 yep, the ripple of this PSU is great! not all chip-powered PSUs can do ~25mV on the output

@valdisblack1541

3 жыл бұрын

maybe, if you replace output capacitors to low-esr one, you can get even less ripple

Please mention the schematics link Great content thanks alot Mr.diode..

19:00 about this zener -- just remove the optocoupler and start the PSU, this will definitely give you the answer. I think this is open-loop and primary side parts failer protection. This is your last hope basically ;D

@atdzsny

3 жыл бұрын

And risk blowing your capacitor bank and the load? I'd be more careful and change the 2.5 V sensing resistor. And I wish someone would donate a multichannel oscilloscope to our teacher.

@valdisblack1541

3 жыл бұрын

@@atdzsny yes, risk is always here, this is the experiment!

Very nice tutorials Plese upload fresh schematics for download options 👍👍👌👌👌

Wooow thank you

ama goin to build it. goodbye cruel world 🤣😁

🙏💓🌾nice valubal teach sirji 🌾💓🙏

sir YOU are an institution...😇👌😇

can you discuss about x and y safety capacitors. how does it provide what is says it does?

How is the section (around 4 min) a voltage doubler when mechanical switch is closed, since the caps are in series, won't that diminish stored potential, but since there are other electrical pathways I between them, does it form more of a staccato transient t between them, that releases an appearance of double voltage?

Super ...

Hi, rally it good thanks you so much. And please tell how to select topology and what are the critical parameters consider for converter topology selection. E.g 48vdc input, o/p 12v/10A isolation cccv driver for charging application, this we can design flyback or forward or push pull or half bridge. But how to select for topology for start up. Pls help me

I had made a mistake by removing the current limiting/ sense resistor and the driving transistor just blew up and the magic smoke escaped :(

@GlynWilliams1950

3 жыл бұрын

Haha. I like your description "the magic smoke escaped". It died.

@johnconrad5487

3 жыл бұрын

the current sense resistor is part of the switch off mechanism. if the transistor does not switch off then the current in the primary will just build up to the point that something will fuse. in your case it was the transistor. a little more and the transformer would go and then the whole board would burn up.

Thank you i stopped buying china cheap chargers I repair mine but it's getting heeeel not it's original.. I going to restore factory... Good explanation thank

Can confirm, zener is an open-loop protection component. I just simulated this, and forgot to connect the feedback on the output - it didn't run away, seems to stabilize just past the optimal voltage as predicted...

@valdisblack1541

3 жыл бұрын

simulated an entire PSU?

@eDoc2020

3 жыл бұрын

@@valdisblack1541 Probably. I like to design and simulate my own PSUs. One day I'll get around to actually building one...

@atdzsny

3 жыл бұрын

@VT Could you please share your simulation?

@Vilvaran

3 жыл бұрын

It's possible, but best done on a fast computer... And the simulation is done in LTSpice, where I just "dropped in" the schematic from the video (that means recreating the whole damned thing and it's operational conditions - hence being possible to miss a connection when not paying attention!) I've used this method to perfect a design which is pending some thorough testing, i'm just waiting on the magnetics (transformers and chokes), must understand it well before proceeding...

If breaking the positive feedback in a self oscillating power supply is a good way to controll its duty cycle, does that mean I can copy the same principle in those dual transistor configurations found in power supplies and cfl drivers? (My plan is to use a zener, optocoupler, a few transistors and diodes to short out the base driver feedback transformer when a preset desired voltage is achieved)

@eDoc2020

3 жыл бұрын

I'm not sure, but I don't think that will work well in a self-oscillating half-wave power supply. I think you'd have mixed results. Keep in mind those supplies need to have the high and low-side transistors on an equal amount of time to work properly.

@two_number_nines

3 жыл бұрын

@@eDoc2020 Half wave is the one shown in the video. Mine is full wave. Im not concerned about asymmetrical signals, as the feedback circuit I'm planning will have a low freq-filter, therefore only minor disbalance in the capacitor divider is possible.

@eDoc2020

3 жыл бұрын

@@two_number_nines It's not about imbalancing the capacitors, the problem with asymmetrical drive is you'll saturate the drive transformer unless you find a way to compensate.

@two_number_nines

3 жыл бұрын

@@eDoc2020 the film capacitor in series with the coil does many things including dc filtering. Anyways, I don't see what's asymmetrical about dual wave rectification short-out of the feedback transformer either with a half bridge rectifier and a transistor, 2 transistors for each cycle, or a full bridge rectifier and a transistor to its dc output.

@eDoc2020

3 жыл бұрын

@@two_number_nines If you short out the feedback in both directions, that will indeed prevent asymmetrical drive. I don't know how well this would perform, there's a chance it might stop the oscillation or worse run the transistors in linear mode. It certainly could be worth a try or at least a simulation to see what happens.

if flyback topology good for ~125W, then what topology is better for higher power? _but I don't think I can see the circuit before I buy any SMPS anyway_ :

@eDoc2020

3 жыл бұрын

Short version: Forward converter. Longer answer, there are many subtypes of forward converter: 1-transistor forward, push-pull, half-bridge, full-bridge to name a few.

This looks like the first half of Ian Ianovich (or ianovini) (Sorry Ian) his pulsing destructive circut.

Please Make Video on Quick Charger QC2.0 & QC3.0 with Schematic and Working Principle.

What happened to a Privileg calculator? Kind of miss it.

👍

Интересный блок питания.

what brand of scope is that ? it looks good...

I think that "overvoltage protection" is just an full wave "power supply" for the phototransistor in the optocoupler.

@DiodeGoneWild

3 жыл бұрын

I meant the "overvoltage protection" is probably the zener.

@bumv2

3 жыл бұрын

Thanks @@DiodeGoneWild, I mixed that up. My problem was that why do you need a two way rectifier to feed a single phototransistor, but maybe you need that too.

Nice video , can you modify this power supply to become variable from 0 to 15v for example , with current limiting if it's possible .

@DiodeGoneWild

3 жыл бұрын

For 15V, the 12V version of this power supply would be way more suitable.

@labiadh_chokri

3 жыл бұрын

@@DiodeGoneWild ok thanks for your quick response.

👍👍👍👍👍

Creme de la creme

How would I go about building a 2kw 100v dc power supply? Does rectifying one of those cheap SCRs work? Or is the power at lower voltages limited? I live in a 230v area. Maybe you guys can help me out. Thanks in advance!

@barnabasnagy9595

3 жыл бұрын

I think the best option (if you don't want to buy one) is to use a full bridge with like 600v 15A mosfets. Why do you need that? 😀

@garage_projects

3 жыл бұрын

@@barnabasnagy9595 thanks for the advice! I need it for an electrolysis cell

@samuelecaldini4400

3 жыл бұрын

If the voltage and galvanic insulation are not important you can use a capacitive/inductive dropper to limit the current and a full bridge of diode for making Dc

@garage_projects

3 жыл бұрын

@@samuelecaldini4400 do you think it's possible to build a capacitive dropper that outputs 2000w ?

@samuelecaldini4400

3 жыл бұрын

@@garage_projects Of course is better to use an inductive dropper for high power, otherwise you will need a capacitor of something near 200uf! depending on the voltage drop on the electrolysis cell

Dear. What is controlling current in mobile charger?

Yeah! Can you buy a 12V 50A power supply on Ebay and make a video about it?

@hexagonist23

3 жыл бұрын

wow 50a is a lot

@Zebra_Paw

3 жыл бұрын

@@hexagonist23 yes of course!

without ic chip?

@xcross8537

3 жыл бұрын

Yes

Could bipolar npn be swapped for a power mosfet sir?

I think it's time to say goodbye to your cardboard sign, and find a new one...

Actually the energy is stored in the air gap of the core not the core itself. Great video as always

@DiodeGoneWild

3 жыл бұрын

The energy is distributed in the entire magnetic circuit, but you're right, most of it is in the gap.

Is it connecting life to Ground, throught a diode?

@DiodeGoneWild

3 жыл бұрын

why would it?

@samuelecaldini4400

3 жыл бұрын

@@DiodeGoneWild Sorry, i haven't seen the capacitor wich separete the ground and the negative line in the primary side. At first I haven't seen the capacitor and I thought that they were connected thogether, if they was the power supply would be quite dogie😂😂. Thank you for making videos on KZread, They have introduced me to the world of electronics, and i learned a lot of things.

R=? , O r must be half C and how about switch , or just Lucky ?

0:07 - take screen shot, first Thank You

I guess that the "input overvoltage" protection is there because it has a manual input voltage selector. It is probably there to protect the circuit from running it from 230V when it is set to 110V input by mistake.

@DiodeGoneWild

3 жыл бұрын

maybe, but the primary electrolytic capacitors would explode anyway :). even if the transistor didn't

3 жыл бұрын

@@DiodeGoneWild So true, I guessed they are 450V capacitors, but I re-checked the previous video and they really just 250V ones. And probably it would be too slow to save the transistor.

Zasilacz działa ale gdzie jest kot?

Can u design a SMPS with using 555 timer with a flyback topology? I working on it now but it still didnt work. 👍👍👍

@DiodeGoneWild

3 жыл бұрын

Maybe you could somehow botch it with tons of external components, but why turn a washing machine into a fridge if you can just get a fridge? There are tons of suitable flyback control chips, including the old good UC3842.

@usonudom3081

3 жыл бұрын

Yeah, i already see the SMPS using UC3842 and its easy to done it. But my project requirement is needed to use the 555 timer to create the PWM pulse in SMPS with flyback converter topology. Thats why I asking u about the design circuit cause i see u are very experience in this SMPS.

@samuelecaldini4400

3 жыл бұрын

@@usonudom3081 You can easily make an unregulated smps with the 555, for example i used it for an unregulated boost converter 7V->200v at low current for testing leds

What GZ 2

Very good explanation. Your accent is difficult to understand. I find you extended and dropped pronunciation at the end of words unusual and in native English speakers. Well done.

@atdzsny

3 жыл бұрын

It might be unusual, but it's a lot easier to understand than most accents used in the UK. :P

@stan9716

3 жыл бұрын

@@atdzsny you god damn so right about this!

How can I send you a private message?

i cant watch this videoooooooss cos i laugh too muuuuuuuuch

Sir, transformer details please sir

Let me explain

Sir please try to explain earbuds with your incredible schematic skiils... Thanks...❤️

+

Come ha imparato questo signore?

If you translate your videos into Arabic, you will have many Arab followers, especially those who do not know English

First, I guess. Nice video.

@nhalnhal7216

3 жыл бұрын

Well done .

@andricode

3 жыл бұрын

And your reward is? The caring of noone?