You have an absolutely admirable ability to describe complex concepts in simple language! I was a university professor and instructor for 16 years and have never encountered anyone as capable in all those years of schooling and peer exposure.
Wow thank you so much that really means a lot coming from someone who has so much experience teaching! It certainly is a passion of mine and I hope to teach one day. Maybe that day has already come 🤔
@@electrarc240 And not the least since hearing you work at Red Bull Powertrains! Can't wait to see what you guys make of the new Honda PU! (My son and me love F1, and are at Zandvoort in August).
@@ByteDelight I have just started recently, but wow is it cool! Sadly I can't really say much about it which upsets me cause I think everyone deserves to see all the crazy tech these F1 teams have. I also worked at Mercedes last year so very interesting to compare their 2026 PUs 👀
Your the first person who has explained vrm's where a amateur can really understand them. Thanks you are an amazing teacher, really appreciate the time you have spent on these videos.
Great video! Lately I've felt a strong autodidactic push to slake my curiosity beyond a surface level understanding with regards to the things I use everyday, but even in this "information age" with 200+ videos showing how to derive a PWM signal from a 555 I find myself in the position of Coleridge's Ancient Mariner. I'm sure what they're saying is correct and viable, but the conceptualization feels like someone who has trekked over the mountain and come back, without regard to the difficulties of the initial summit. I just wanted to drop a line and say that although there are many who are doing or have done things categorically similar to your work, how you parse and convey the information is unique and proven, to me at least, to be the most enlightening. So thanks, your work is very much appreciated.
@brieftodo agree.. this was great to be able to explain to my son who is speccing a new pc and what all the marketing crap was about…. Well done..clear, easy to follow, and not bloody clock bait….have a sub!
as someone who was recently trying to decide what the components on a new motherboard were and trying to decide if I need to make some kind of custom cooling thing for them, all my attempts to find videos explaining the components have come up empty until this video, thank you, and thank you again for explaining how things work in such a way that even I was able to follow and understand, hugely useful and helpful video.
Very useful for noobs, thanks a lot. Please provide more visual examples of the concepts being explained like the one with the switch. This really helps.
Thank you, I've been slowly reaching the point, as just a hobbyist, where I actually needed to know this. I knew very little to start with, and yet everything was clear and easy to follow. It's cool to know how mobos work. Subbed!
This is perfect 👍🏾 it’s a decent balance between layman understanding and intermediate and ready to research more. You wouldn’t believe how much some folks gate keep (no pun intended) this info. It’s weird lol it almost feels like they want to appear smart. Sharing is caring, thank you!
That’s exactly how I feel! There are some things that seem so simple yet anyone who “teaches” about it just use all these needlessly complex terms and put people off. Thank you!
Noone is gate keeping anything, they just dont understand none of it, go read the application notes, there is a mountain of info freely available, but you need to understand the basics.
Love all your videos and have been binge watching recently, refreshing my electronics knowledge as a hobbyist. Appreciate your hard work, keep it up! Can't wait for the GaN video!
I agree that the understated “ Please Subscribe” that’s slipped in is way better than all the in your face graphics. If you’re going for the subliminal programming effect, can you add some encouragement statements or something . I really need to quit smoking and loose weight. Joking aside( yes, an attempt at a joke) keep up the great work . Your videos are highly watchable and very informative. Thanks.
love this channel. and thank you for sharing your knowledge. If you can do a troubleshooting session along with the lesson, that will help us the amatures.
Apart from power delivery, there isn't a lot going on on modern motherboards to be honest, they mostly just connect everything together: CPU, RAM, Graphics card, etc...
We also use multiphase buck converters for diode laser power supplies. Diode lasers need a very tightly controlled constant current in the order of 300A at 15V to pump solid state Nd:YAG crystals for various applications. The most important aspects are step response and overshoot that multiphase buck converters are ideal
The circuit is not commonly referred to as a half bridge when used in a buck converter. The switch to 0 V ("ground") is invariably known as a "synchronous rectifier." A diode is very commonly used in that position, but these days MOSFETs with very low ON resistance can significantly improve efficiency, though it requires active control. In buck circuits where the output voltage is very much lower than the input voltage the forward voltage of rectifier is a big player in efficiency since it conducts for most of each switching cycle. Management of power dissipation and capacitor ripple current are very much significant considerations that favor multiphase converters. Newer multiphase regulators operate at such high frequencies that "all ceramic" designs, where electrolytic capacitors are not necessary,, are practical. These often use integrated power packages that include both the high and low side FETs and their drivers, along with some pretty sophisticated protection circuitry. The expression for a buck converter Vout = Vin x duty cycle (ignoring losses) only holds where the inductor current is "continuous" - that is, it does not drop to zero each switching cycle. When a synchronous rectifier is used, continuous current mode operation can be forced - the inductor current actually reverses and flows from the output capacitor into the inductor and to ground. This has pros and cons. Preventing forced continuous current mode operation requires more circuitry than allowing it.
muy bueno, aunque es algo que ya sabía, no sabia que era multifase, pensaba que eran 3 fuentes individuales. buena explicación, comentó en español para que sepas que tu público es amplio. va mi like y suscripcion.
It would be nice if the 3 phases could cancel the ripple completely as with 3 phase rectifiers using sinewaves. Perhaps that doesn’t work with the triangle waves
Yeah sadly not, there is a bit of a "golden number" of phases given by 1/d where d is duty cycle (so 12 phases for my 12V to 1V example), at which there is always a single half-bridge high so the output capacitors have far less ripple to smooth. Sadly in practice this doesn't really work as the duty cycle is constantly changing to adjust for CPU load, meaning there will be short times of either no half-bridges high or two half-bridges high, both of which will re-introduce the troublesome ripple. You do get some open-loop fixed-duty converters that take advantage of this but they are quite uncommon.
You would have fun looking at a gigabyte GA-8KNXP (Pentium4 era) they did the weirdest thing and gave it a card slot beside the FETs to add extra power 'phases'(?) called DPM. Had to look it up, one user said theirs caught on fire, another user said that it was for if the EPS 12v failed, I had one of these but never the extra card to boost it. So I'm uncertain if it was new phases, or lowering the RDSon by putting extra ones in parallel, or some other augmentation.
I believe something that was missed is the purpose of the low side switch. I assume it is related to the functioning of the inductor. If you were only charging a capacitor you would only need to switch high side.
But then it would just charge to 12V, the low side switch is to discharge it so that is bounces between say 0.9V and 1.1V to give an average 1V output. With an inductor it’s the same except it is possible to use just a diode because the inductor can use its stored energy to commutate the diode automagically
@@electrarc240 The only way the average works in the capacitor example is because there is a lag in voltage change. Try charging a large capacitor through a resistor and measure the voltage at the capacitor as it's charging, momentarily connecting the example capacitor to higher voltage through a resistor will not instantly bring it to the higher voltage. The red flag is shorting the capacitor to ground to lower the voltage is very inefficient, the load can lower the voltage as well as do something useful. At least as far as I understand it the capacitor example has no use for a low side switch (you only need high side to top off the capacitor as it gets drained.) an inductor can use the low side to discharge.
@@foxale08 The capacitor example was just for demonstration, it is much easier to make a very slow RC filter than an LC one. In a buck converter there is current flowing through the inductor so you cant just disconnect the input side of it or the voltage spike would break the MOSFET as the inductor has nowhere to "pull" the current from. So it needs a low-side diode and we often swap that for a MOSFET to improve efficiency and low load regulation
i have a very simple question , instead of a multiphase buck converter , why not have a single good or high quality buck converter with lowest possible ripple or maybe an LDO right after the BUCK stage , you will highly decrease the BOM cost and LDO will have the most stable output voltage given that its able to handle the amounts of current thrown at it by the CPU
I think multiphase can achieve better "bang per buck" by using many cheap components rather than fewer pricey ones, it also has better responsiveness which is really important for CPU power.
Why not use 3.3V supply from PSU instead of 12V to increase buck duty cycle for 1.2V CPU rail to 50%? You’d need 4x wire ampacity, but it’s better than making MBs so packed with VRMs, move more VRM stuff to the PSU side, where you have more room and ventilation.
The case in reality is the opposite, maybe counter-intuitively. Servers often run at 40V+ to reduce copper losses/requirements. I guess copper is so expensive now that it really is cheaper to have a more complex buck converter than to use thicker copper. Kinda weird!
@@electrarc240 but then copper is wasted on heat pipes due to inefficiency 😂. I think the problem is due to modularity of PC market, where each company is optimizing their component rather than optimizing the system as a whole. And also optimizing for performance and efficiency, not lowest cost. This is why Apple PCs are better at hardware, whole thing is optimized by one team. I guess laptops and tablets are the same, but not traditional PCs.
2:36: V_out / V_in = duty cycle Is this actually correct for a buck converter? It stores energy in a magnetic field. So V_out is correlated to the duty cycle, and so is the current capability, but the actual formula/value depends on the hardware used and could be anywhere we want, no? We can build a buck converter that outputs 5 V 1 A at 0.1 % duty cycle and we could do one that gets there with 99 % duty cycle. For the graphics, why not do it in excel or something? No need to know anything about excel or python, ChatGPT will do that for you. A plot is really simple. But perhaps you were going for the hand-drawn-esthetics.
I came from the power supply video and this helped my understanding but I still dont quite get how you can get negative power to positive. Is it a relative term? Like, its just flow of current, so if you flip yourself then the current will appear to be flipped when its really going the same direction, like my right and your right are opposite when we are looking at eachother (sexy)
With my manual half-bridge I’m switching at around 5Hz, so the inductance needed would be huge. For a quick demonstration it was much easier to just use an RC filter rather than an LC one, and just not mention it. Doesn’t affect the basic understanding at all
No it was a simplified demo, treating a buck converter as just a filtered half-bridge. As I was manually switching (Fsw = ~5Hz) an LC filter would've required a very high inductance, hence the use of an RC filter instead. There was no point mentioning this and potentially confusing people. For the majority of viewers this has given them all the understanding they wanted, if those who are interested (hopefully this has got people interested) simply do a little googling or watch other, more in-depth videos (hopefully mine) about buck converters they will learn the reasons for using an LC filter over RC filter.
Why are you doing this now, about 20 years too late? You just learned this, apparently, what anyone who cared to learn, did back then. Your youtube content needs to be something worthy of mentioning, not old stuff that your young mind just learned yourself. Instead of wasting time stating the obvious, take what you have learned to try to further the field, keeping silent until you have something to ADD.
You have an absolutely admirable ability to describe complex concepts in simple language! I was a university professor and instructor for 16 years and have never encountered anyone as capable in all those years of schooling and peer exposure.
Wow thank you so much that really means a lot coming from someone who has so much experience teaching! It certainly is a passion of mine and I hope to teach one day. Maybe that day has already come 🤔
Probably the best explanation about VRMs on the internet, well done!
Agreed, very informative! Well done!
Thank you so much! Really means a lot to hear that and makes me glad to have returned.
@@electrarc240 And not the least since hearing you work at Red Bull Powertrains! Can't wait to see what you guys make of the new Honda PU! (My son and me love F1, and are at Zandvoort in August).
@@ByteDelight I have just started recently, but wow is it cool! Sadly I can't really say much about it which upsets me cause I think everyone deserves to see all the crazy tech these F1 teams have. I also worked at Mercedes last year so very interesting to compare their 2026 PUs 👀
Nice video, great explanation - well done
Your the first person who has explained vrm's where a amateur can really understand them. Thanks you are an amazing teacher, really appreciate the time you have spent on these videos.
Thanks!
Great video! Lately I've felt a strong autodidactic push to slake my curiosity beyond a surface level understanding with regards to the things I use everyday, but even in this "information age" with 200+ videos showing how to derive a PWM signal from a 555 I find myself in the position of Coleridge's Ancient Mariner. I'm sure what they're saying is correct and viable, but the conceptualization feels like someone who has trekked over the mountain and come back, without regard to the difficulties of the initial summit. I just wanted to drop a line and say that although there are many who are doing or have done things categorically similar to your work, how you parse and convey the information is unique and proven, to me at least, to be the most enlightening. So thanks, your work is very much appreciated.
Thank you so much that really means a lot!
Min 3:58 What a clever example to understand its switching process, using a capacitor.
@brieftodo agree.. this was great to be able to explain to my son who is speccing a new pc and what all the marketing crap was about…. Well done..clear, easy to follow, and not bloody clock bait….have a sub!
Thanks for the video. I've been trying to up my mobo topology and power delivery knowledge lately and this was a quick reference.
Glad to help!
wanted to say that it's the best VRM explanation on UA-cam, i see that i'm not the only one who thinks that :D subscribed
Ah thank you very much!
I don't know that much about electronics (only High School physics) but that explanation of the buck converter at 3:36 is magic!
Thankyou so much! It was very off the cuff haha
thank you, I didn't know that about CPU motherboards very good tutorial
as someone who was recently trying to decide what the components on a new motherboard were and trying to decide if I need to make some kind of custom cooling thing for them, all my attempts to find videos explaining the components have come up empty until this video, thank you, and thank you again for explaining how things work in such a way that even I was able to follow and understand, hugely useful and helpful video.
Thank you very much, I'm glad it was easier to understand!
Glad to see you back. Looking forward to your upcoming videos.
Thanks, looking forward to making them!
Very interesting video! Great to see you back, new job sounds cool!
Thank you! It certainly is :)
Very useful for noobs, thanks a lot. Please provide more visual examples of the concepts being explained like the one with the switch. This really helps.
Don't worry those are my speciality 😉
Thank you, I've been slowly reaching the point, as just a hobbyist, where I actually needed to know this. I knew very little to start with, and yet everything was clear and easy to follow. It's cool to know how mobos work. Subbed!
You're a very efficient communicator
Excellent! I’ve learned a lot from this video and from the one about switching power supplies, thank you!
Your explanations are very good and down to earth. Thank you very much!
This is perfect 👍🏾 it’s a decent balance between layman understanding and intermediate and ready to research more.
You wouldn’t believe how much some folks gate keep (no pun intended) this info. It’s weird lol it almost feels like they want to appear smart.
Sharing is caring, thank you!
That’s exactly how I feel! There are some things that seem so simple yet anyone who “teaches” about it just use all these needlessly complex terms and put people off. Thank you!
Noone is gate keeping anything, they just dont understand none of it, go read the application notes, there is a mountain of info freely available, but you need to understand the basics.
Very interesting. UA-cam recommendations did a good job this time.
Thank you very much!
That was very nicely explained, so even i could understand that! Thanks for that!
Thank you, glad to hear it was digestible :)
Love all your videos and have been binge watching recently, refreshing my electronics knowledge as a hobbyist. Appreciate your hard work, keep it up! Can't wait for the GaN video!
Wow! This is concise and easy to follow, I learned something today!
Well that cleared up a lot of questions for me. subbed.
Glad to have helped!
Wow, it's easy to understand when we have a superb explanation like here!
Perfect explanation of the subject. Passing this video on to the staff techs so they may also get benefit from this. Thanks greatly
Nice simple explanation, straight to the point no cheesy jokes. Subscribed
Amazing explanation as always! Please keep the videos coming!
11:19 That was a nice subtle "Please Subscribe"...... way better than the huge graphics seen in many other videos..👍
I agree that the understated “ Please Subscribe” that’s slipped in is way better than all the in your face graphics. If you’re going for the subliminal programming effect, can you add some encouragement statements or something . I really need to quit smoking and loose weight. Joking aside( yes, an attempt at a joke) keep up the great work . Your videos are highly watchable and very informative. Thanks.
love this channel. and thank you for sharing your knowledge. If you can do a troubleshooting session along with the lesson, that will help us the amatures.
VERY good explanation!!!
Thank you very much!
lovely explanation sir , thank you for such a detailed video
Excellent explanation! I enjoyed it. Thanks!
Solid video AS USUAL. Thanks! In a future video could you explain how typical motherboards work?
Apart from power delivery, there isn't a lot going on on modern motherboards to be honest, they mostly just connect everything together: CPU, RAM, Graphics card, etc...
Just discovered your channel. This is pure gold! Subscribed.
Thank you!
Keep em coming, great video!
Thanks!!
Fantastic stuff. I am learning a lot!
I have learnt a lot of things at once.. stay blessed
We also use multiphase buck converters for diode laser power supplies. Diode lasers need a very tightly controlled constant current in the order of 300A at 15V to pump solid state Nd:YAG crystals for various applications. The most important aspects are step response and overshoot that multiphase buck converters are ideal
Oh yeah I’d heard about that application for them. Sounds really interesting!
Glad to see you back! I was worried 😂
Thank you. Glad to be back!
Excellent explanations, I’m new subscriber just because of this video.
Excellent explanation, my only suggestion would be to use lined/graph paper or a ruler next time, clean up that drawing a bit.
very very well explained! Keep going!
Thanks for this superb explanation..❤
Happy to see you back!❤
Happy to be back!
Perfect explanation. 🎉
The GOAT returns
The circuit is not commonly referred to as a half bridge when used in a buck converter.
The switch to 0 V ("ground") is invariably known as a "synchronous rectifier." A diode is very commonly used in that position, but these days MOSFETs with very low ON resistance can significantly improve efficiency, though it requires active control. In buck circuits where the output voltage is very much lower than the input voltage the forward voltage of rectifier is a big player in efficiency since it conducts for most of each switching cycle.
Management of power dissipation and capacitor ripple current are very much significant considerations that favor multiphase converters.
Newer multiphase regulators operate at such high frequencies that "all ceramic" designs, where electrolytic capacitors are not necessary,, are practical. These often use integrated power packages that include both the high and low side FETs and their drivers, along with some pretty sophisticated protection circuitry.
The expression for a buck converter
Vout = Vin x duty cycle (ignoring losses)
only holds where the inductor current is "continuous" - that is, it does not drop to zero each switching cycle. When a synchronous rectifier is used, continuous current mode operation can be forced - the inductor current actually reverses and flows from the output capacitor into the inductor and to ground. This has pros and cons. Preventing forced continuous current mode operation requires more circuitry than allowing it.
All ceramic is sexy af 😜. And yes many good points, thank you
At 3:45 I did chuckle because I went, "That's not a capacitor, that's a hey buddy catch bomb" xD
good job shutting me up at 4:50. subbed.
Very nice ~ thank you.
Great explanation ❤️
muy bueno, aunque es algo que ya sabía, no sabia que era multifase, pensaba que eran 3 fuentes individuales. buena explicación, comentó en español para que sepas que tu público es amplio. va mi like y suscripcion.
Gracias!
@11:40 "...as a choke than an inductor." A 'choke' _IS_ an inductor, just wound and designed for a specific task.
Amazing video. Subscribed 👍👍
Thanks!
It would be nice if the 3 phases could cancel the ripple completely as with 3 phase rectifiers using sinewaves. Perhaps that doesn’t work with the triangle waves
Yeah sadly not, there is a bit of a "golden number" of phases given by 1/d where d is duty cycle (so 12 phases for my 12V to 1V example), at which there is always a single half-bridge high so the output capacitors have far less ripple to smooth. Sadly in practice this doesn't really work as the duty cycle is constantly changing to adjust for CPU load, meaning there will be short times of either no half-bridges high or two half-bridges high, both of which will re-introduce the troublesome ripple. You do get some open-loop fixed-duty converters that take advantage of this but they are quite uncommon.
Thank you!
nice video currently trying to fault find power or power control fault on a motherboard
Thanks!
sir , please do PCB design videos as well , would be really glad to learn from you .
Already have! About two years old but they are in a playlist on my channel page!
"Please excuse the crudity of this model. I didn't have time to build it to scale or to paint it." - Dr. Emmett Brown (with Dave Jones)
You would have fun looking at a gigabyte GA-8KNXP (Pentium4 era) they did the weirdest thing and gave it a card slot beside the FETs to add extra power 'phases'(?) called DPM. Had to look it up, one user said theirs caught on fire, another user said that it was for if the EPS 12v failed, I had one of these but never the extra card to boost it. So I'm uncertain if it was new phases, or lowering the RDSon by putting extra ones in parallel, or some other augmentation.
Just gave it a quick google, looks so interesting (if a bit gimmicky), thanks for mentioning it!
My kind of format! :D
The old P4-era motherboard has a 4-pin power connector but my board has two 8-pin connectors and a twin 8+8 phase VRM.
Two 8-pins damn
nice, I lasted until 1:20 then subbed
Good explanation 👍🏼
Thanks!
I believe something that was missed is the purpose of the low side switch. I assume it is related to the functioning of the inductor. If you were only charging a capacitor you would only need to switch high side.
But then it would just charge to 12V, the low side switch is to discharge it so that is bounces between say 0.9V and 1.1V to give an average 1V output. With an inductor it’s the same except it is possible to use just a diode because the inductor can use its stored energy to commutate the diode automagically
@@electrarc240 The only way the average works in the capacitor example is because there is a lag in voltage change. Try charging a large capacitor through a resistor and measure the voltage at the capacitor as it's charging, momentarily connecting the example capacitor to higher voltage through a resistor will not instantly bring it to the higher voltage. The red flag is shorting the capacitor to ground to lower the voltage is very inefficient, the load can lower the voltage as well as do something useful. At least as far as I understand it the capacitor example has no use for a low side switch (you only need high side to top off the capacitor as it gets drained.) an inductor can use the low side to discharge.
@@foxale08 The capacitor example was just for demonstration, it is much easier to make a very slow RC filter than an LC one. In a buck converter there is current flowing through the inductor so you cant just disconnect the input side of it or the voltage spike would break the MOSFET as the inductor has nowhere to "pull" the current from. So it needs a low-side diode and we often swap that for a MOSFET to improve efficiency and low load regulation
fantastic !!
Thank you.
Always happy to teach :)
Thanks.
👍👍
i have a very simple question , instead of a multiphase buck converter , why not have a single good or high quality buck converter with lowest possible ripple or maybe an LDO right after the BUCK stage , you will highly decrease the BOM cost and LDO will have the most stable output voltage given that its able to handle the amounts of current thrown at it by the CPU
I think multiphase can achieve better "bang per buck" by using many cheap components rather than fewer pricey ones, it also has better responsiveness which is really important for CPU power.
So is checo going to make it through the summer break or is he out? I'm sure you have the inside scoop! 😁
🤐
That simple circuit at 3.35 is very easy to understand, care to share the diagram so that i can explain to students
Just an RC filter!
8:20 so exactly like AC, noice
Mayyyybe. More “on and off” than “up and down” though I’m afraid 😔
Why not use 3.3V supply from PSU instead of 12V to increase buck duty cycle for 1.2V CPU rail to 50%? You’d need 4x wire ampacity, but it’s better than making MBs so packed with VRMs, move more VRM stuff to the PSU side, where you have more room and ventilation.
The case in reality is the opposite, maybe counter-intuitively. Servers often run at 40V+ to reduce copper losses/requirements. I guess copper is so expensive now that it really is cheaper to have a more complex buck converter than to use thicker copper. Kinda weird!
@@electrarc240 but then copper is wasted on heat pipes due to inefficiency 😂. I think the problem is due to modularity of PC market, where each company is optimizing their component rather than optimizing the system as a whole. And also optimizing for performance and efficiency, not lowest cost. This is why Apple PCs are better at hardware, whole thing is optimized by one team. I guess laptops and tablets are the same, but not traditional PCs.
@@CleanPowerAuto That us a very good point to be fair
🎉❤
My first computer motherboard.
One capacitor was bloated.
Subscribed!
High side low side??? Is high side the supply voltage and low side the output side?
GJ man! subbed :)
Thanks a lot!
2:36: V_out / V_in = duty cycle
Is this actually correct for a buck converter? It stores energy in a magnetic field. So V_out is correlated to the duty cycle, and so is the current capability, but the actual formula/value depends on the hardware used and could be anywhere we want, no? We can build a buck converter that outputs 5 V 1 A at 0.1 % duty cycle and we could do one that gets there with 99 % duty cycle.
For the graphics, why not do it in excel or something? No need to know anything about excel or python, ChatGPT will do that for you. A plot is really simple. But perhaps you were going for the hand-drawn-esthetics.
I didn't mention the caveat that it required continuous inductor current. And yeah I personally prefer the hand-drawn look despite it seeming lazy
nice
Hi dear, I have a question...if the voltage for the CPU has to be brought to 1v, then why not using 3.3v psu rail?
For a given power, say 100W, the current in the wires from the PSU would need to be much thicker. 100W / 12V = 8.3A. 100W / 3.3V = 30.3A
Yeah, those openings in the solder mask, they do exactly nothing.
Haha love the subliminal message to subscribe
I came from the power supply video and this helped my understanding but I still dont quite get how you can get negative power to positive. Is it a relative term? Like, its just flow of current, so if you flip yourself then the current will appear to be flipped when its really going the same direction, like my right and your right are opposite when we are looking at eachother (sexy)
Yeah voltage and current are both relative so it really just depends on ✨perspective✨
@@electrarc240 Nice, thanks for the response! Your videos are great!
@@bioemilianosky So are my viewers ;)
11:19 yeah alright :)
I haven't watched this video but, at 1st sight, it seems it has an AMD processor... A funny thing (just for me)
9:55 a*Coughs*sus
Sorry sore throat.
So a 1920 vintage buck converter is pretty lousy. So let's repeat it 37 times. Whatever you do, don't look at 2011 converter circuits.
Great video
Why didn't you put inductor with ur circuit on bread board
With my manual half-bridge I’m switching at around 5Hz, so the inductance needed would be huge. For a quick demonstration it was much easier to just use an RC filter rather than an LC one, and just not mention it. Doesn’t affect the basic understanding at all
Did you forget the inductor?
No it was a simplified demo, treating a buck converter as just a filtered half-bridge. As I was manually switching (Fsw = ~5Hz) an LC filter would've required a very high inductance, hence the use of an RC filter instead. There was no point mentioning this and potentially confusing people. For the majority of viewers this has given them all the understanding they wanted, if those who are interested (hopefully this has got people interested) simply do a little googling or watch other, more in-depth videos (hopefully mine) about buck converters they will learn the reasons for using an LC filter over RC filter.
You cannot just replace the inductor with the capacitor in the demo.
Shhhh!
Why are you doing this now, about 20 years too late? You just learned this, apparently, what anyone who cared to learn, did back then.
Your youtube content needs to be something worthy of mentioning, not old stuff that your young mind just learned yourself.
Instead of wasting time stating the obvious, take what you have learned to try to further the field, keeping silent until you have something to ADD.
Please, don't use sharpie and a regular paper. Some of us can't handle this squickie sound 🙂
Ah my apologies! I am open to suggestion for alternative pen suppliers? I have some POSCAs somewhere...
Ooohh, what an adorable whiner you are. Your mind is softer than a tuft of cotton. 😭
impressive! Great video
Thank you!
Good stuff (a technical term). Thanks for the creativity and infotainment. Cheers from So.Ca.USA 3rd House On the Left (call before stopping by)