Came in expecting to not learn anything because I thought I knew quite a bit about these DC-DC converters. I WAS VERY WRONG. Thank you so much for this amazing explanation!
@@electrarc240There's one thing I don't understand, what makes the boost converter have more power than a buck of the same size? Does that mean most boost converters have more power/size?
software engineer here but hobbyist electrical. i agree. i'm thinking about going back to school and getting an electrical degree. shit i tutor my friends who are in electrical during their theory classes. my bench gear is worth more than my guitar collection haha.
I am NOT an EE, not even an engineering student (yet). I am a licensed industrial electrician and instrumentation technician. Thank you for teaching in a manner that EVEN I CAN UNDERSTAND. I struggle to learn theory without real life examples and analogies that I can relate too which can often be rare in this field. Keep up the good work!!
Wow! Those words, coming from an HONORABLE channel (like *EngineeringMind* ) made me seen KINDNESS still flourishing in a world that, currently, seems to be selfish, self-centered (or despicable). Thanks for having passed by!
Great video explaining the basics of DC-DC converters. I especially appreciate the appeal to synesthesia. Boost is red, buck is blue, buck-boost is a mix, so purple!
There is a high probability that he will be teaching at university or higher, if he wishes to. Or, will be creating and licensing edu videos he creates like this one. He has a gift!
@@marian20012 Didn't realise my acting was so convincing! I wasn't exhausted, just trying to think of something to do other than stare at the camera for 5 seconds. I'll smile like the joker next time :D
@@shawncalderon4950 Not currently actually, working, which I find much more tiring because of all the interactions. In 8 months I'll be back at uni and will have much more time and energy for videos!
My utmost respect and gratitude to you. Your material is golden. I understand that writing and making these videos takes a lot of heart, energy and time, but many people are very grateful for the work.
Fantastic explanation. I took a grad school course on this ages ago, and I could never remember which circuit was which. Your "three logical possibilities" makes it much clearer and I don't think I'll ever forget it again.
This is an amazing explanation of DC-DC converters. I thought I had a basic understanding of how they worked, but this new perspective genuinely helps me see how they work better, especially with the bit about substituting the diode with another MOSFET. can't wait for the next video!
Yeah, I didn't quite get that bit. Why would the diode become reverse biased and block the current flow at very low load? As I understand it, after the control mosfet switches and the inductor begins sourcing current to the load, it won't suddenly reverse current directions just because the load has dropped. It will just continue to amp up the current to maintain current flow. Or? What am i missing?
Thinking of inductors as smoothing out current, and producing high voltage to maintain current is that one little bit of info I needed for the whole thing to fall into place for me. Always battled with the intuitive understanding here. Thanks mate.
The explanation of what an inductor does is so clear, I finally understand it. Been trying to figure out inductors for years but everyone just talks about collapsing magnetic fields and I glaze over. Thank you.
Man, if these videos had been around when I was studying EE I might’ve graduated 😂. Thanks so much for the insight and clarity. Gonna be binging your channel today!
I see that a few people have mentioned 4-switch "buck-boost" converters in comments. These are not "classical" buck-boost converters, but actually converters that operate either in classical buck mode or classical boost mode according to the input and output voltage requirements and conditions. The required controller is quite complex. One built-in benefit is that synchronous rectification, with its inherent efficiency advantage, is "build in."
Well, …… up until now I have been using buck and boost converters to do what they do, but didn’t have a good idea about the why of things. Thanks for a great explanation! I’ll watch this another couple times and do the stop and backup along the way. I don’t learn quite as fast as I uses to 50 years ago, but once it sinks in I’m good to go.😎
Excellent! Just what I needed to know. They are an excellent example of the use of the specific properties of inductors and capacitors as you clearly point out!
Your videos are among the very best for making concepts understandable. Just the thumbnail image in the title brought me new clarity on the topic. Very well done, keep it up. Thanks brotha
Love these videos. I got a computer engineering degree years ago (before google was even a search engine), so I know the basics of circuitry, mostly digital. I went into software development, and never really delved too deep in analog stuff. These videos are great for refreshing what I forgot, and expanding on that and taking it further.
This is as close to the digital domain as it gets, with the PWM controller being mostly a digital device :D Now imagine people in the 70s, trying to develop an SMPS with nothing but crappy transistors and feedback loops. I remember reading Horowitz & Hill book, the section on how to design a switched-mode power supply with the preface being "please don't".
Great video, I now finally have something to point my friends to regarding how the converters work. Note that most modern (synchronous) "buck-boost" converters actually use 4 N-MOSFETs (high/low on both in/out) and have integrated gate drivers, to avoid a lot of the shortcomings, typically internal to the switching IC, but some ICs allow the use of external FETs (all 4, or only high, or only low, depends on what is convenient for the application).
Yes I will definitely mention this in the next video, but as the four switch version no longer “pivots” the inductor I thought I’d leave it from this one to keep things clear
Thanks for taking Your time and effort of making this excellent video, and for sharing Your knowledge. I can only agree withe all the other complementing comments in that this is a very clear and concise video that made me much better understand things that I previously thought I "knew". So many thanks for that. Best regards.
Excellent, as always! One point I would emphasize: The expressions relating duty cycle with input and output voltage *_only_* hold up when the inductor current is continuous (i.e. the inductor current never "dwells" at zero at any time during the switching cycle). Once inductor current become discontinuous, the expressions become much more complex. My apologies if it was mentioned and i missed it.
Holy cow, this is so applicable! I was just researching the possibility of making my own custom battery chargers and thus trying to better grasp the essential concepts of voltage converters... boom, upload from ElectrArc on that very topic 23 min ago. Talk about good timing!
Sounds interesting! There have been papers written on how current ripple (discontinuous current in particular) can cause internal heating and shortened life in batteries, so keep that in mind.
@@electrarc240 Very good to know! Current ripple is not something I've looked into enough, so thanks for the excuse to dig deeper. Do you happen to know what causes the internal heating, from a technical standpoint? Is it just bursts of over-current? Maybe brief over- / under-voltage at the limits of the cycle? Both? Neither? lol. I ask because most of my work is on solar and battery backup systems, where cells are rarely pushed anywhere near their charge / discharge current limits, and even the voltage range is slightly narrowed for longevity and safety. I wonder, could current ripple be expected to have any less detriment in this context?
Some battery technologies are more vulnerable to DC ripple in charging current than others. And it's a problem with high-density high-voltage batteries overall...
Excellent description and interesting that you mention forward converters. Those were a thing back in the 1980s but fell out of favor, overtaken by flybacks and later, resonant conversion.
The one I held up was made at uni for the “energy project” group project. I guess they’re nice and simple so hard to go wrong for students! Flyback has the risk of producing dangerous voltage I suppose
You are definitely on your way of becoming the best 👌 electronics youtuber ever! Your videos are simply superb. I must admit that I'm a bit jealous. UA-cam really needs quality content like this. I wish I could make content this good.
once again another excellent video from you. The bicycle demo was perfect! i am def goign to explain using that analogy from now on. You really do have a way with teaching. and the way you wield your obviously deep understanding of the concepts, you're definitely not just repeating the same tired analogies like so many science channels do, especially the space ones lol, you really bring a confidence and style that really make sense. I wonder how you'd do explaining cosmology and compressed matter physics.... lol thanks again. wish you had a patreon hint hint
If you want buck-boost functionality with partial isolation and no inversion, there are the CUK and SEPIC topologies which decouple input from output via capacitors so DC cannot flow straight through when the converter isn't running or a MOSFET has failed.
The video I was hoping you’d make !! Looking to try and start a Formula SAE team for my university and looking to get all the help I can , so thank you for your videos ((:
Great video! Thank you for the visualisation of the inductor at 4:28. That's what I needed to finally understand what saturation means. Saturation was always a mystery to me, because it's important to choose a coil with a saturation that lies within the specs of the power supply you're designing. I feel stupid for never knowing buck-boost converters existed and that they can create a negative supply voltage. I could have solved many circuits with a buck-boost converter instead of a noisy charge pump. I'm assuming that the circuit needs regulation, because the voltage will drop under load?
Yeah some regulation would be a good idea, though if you can keep enough load to prevent the inductor current from ever reaching zero the output voltage will be fairly stable according to the equation shown at the end
Edit: I misunderstood ignore below I must say i was quite disappointed in the statement there are no non-inverting buck-boost converters, because yes they exist, with 2 FETs and 2 coils sometimes in 1 IC package. I think what you meant was with one coil? The rest of the video was very good and i very much enjoyed it!
Thanks. When did I say that? I only ever mentioned the standard buck-boost as this video was just about the three “fundamental” topologies that are in the thumbnail
@electrarc240 you are absolutely right, I misunderstood when you were talking about "standard" buck boost converters rather than most/all. So there are other standard types that dont invert, just not the one you were talking about. I jumped to conclusions too quickly. My bad.
Just discovered you via the switch mode power supply video. Would it be correct to say: an SMPS is actually just the rectifier part of a linear power supply - but without any initial transformer to lower the voltage, so it's operating at mains voltage. (more efficient, or at least needing smaller parts, because of the higher voltage. I'm reminded of the 400 volt vacuum cleaners used on airplanes) -- coupled with a flyback/buck-boost DC to DC converter to greatly lower the voltage to useful-for-standard-electronics levels? Is that an oversimplification? These are great videos! Keep up the good work!
Would you happen to have a link for the buck converter board? I'm trying to make my own using some old inductors out of a blown up mppt charge controller. Not sure what i'm doing but that's how you learn! Any who id like to scope a buck converter with different freq and look at the output. Inductors I have are beefy 1mh so next is picking a fet or fet's for the job.
Great video. I think I missed something. Curious about the Buck-Boost converter's inverse output. Why the complexity of the circuit if all it does is reverse polarity?
Can you use a Buck-Boost converter to make a dual +/- power supply for an opamp? Since you already have +10V going in to the Buck-Boost, getting -10V on the output, and have a common ground, seems like it would work but... I'm not sure if there would be problems using it that way or maybe that's the whole point.
Yeah you can, but they are quite noisy because of the discontinuous current and many applications for bipolar supplies are analog circuits requiring nice smooth voltages so often they can’t be used because of that
Came in expecting to not learn anything because I thought I knew quite a bit about these DC-DC converters. I WAS VERY WRONG. Thank you so much for this amazing explanation!
Yeah, seriously. This was so helpful in explaining subjects I've really struggled to understand.
This has to be the clearest explanation of buck/boost converters on the Internet right now. Very well done! Thanks so much for the explanation!
Wow thank you very much!
I agree
I second that (as an electrical engineer).
amazingly clear to me an electrical electronics engineering technologist
@@electrarc240There's one thing I don't understand, what makes the boost converter have more power than a buck of the same size? Does that mean most boost converters have more power/size?
I’m an electrical engineer and this is probably the most beautiful explanation of these topologies I’ve ever come across. Nice job, man!
Same here, and likely the same as you I have an intuitive understanding, but when shown with such CLARITY, is beyond enjoyable!
software engineer here but hobbyist electrical. i agree. i'm thinking about going back to school and getting an electrical degree. shit i tutor my friends who are in electrical during their theory classes. my bench gear is worth more than my guitar collection haha.
I am NOT an EE, not even an engineering student (yet). I am a licensed industrial electrician and instrumentation technician. Thank you for teaching in a manner that EVEN I CAN UNDERSTAND. I struggle to learn theory without real life examples and analogies that I can relate too which can often be rare in this field. Keep up the good work!!
I am an EE, have read many books, all garbage I can see. I understood nothing, until I get this video
These videos and this channel are great, well done Fred. Anyone reading this, subscribe to him immediately.
Way ahead of you :)
you explain basic physics stuff, not just electricity, that's why he is ahead of you
Wow! Those words, coming from an HONORABLE channel (like *EngineeringMind* ) made me seen KINDNESS still flourishing in a world that, currently, seems to be selfish, self-centered (or despicable). Thanks for having passed by!
Great video explaining the basics of DC-DC converters. I especially appreciate the appeal to synesthesia. Boost is red, buck is blue, buck-boost is a mix, so purple!
I was shocked when I realized it can be explained this simple, and distilled to this very essence! Bravo
On the way to a million subs easy. Crazy, super talented. I'm blown away! There isn't a better instructor of electronics on the internet.
his exhaustion displayed at the end, hints he is not gonna last for long...
@ He is attending university, so his fatigue might be caused by his being distracted. Thanks for sharing!
There is a high probability that he will be teaching at university or higher, if he wishes to.
Or, will be creating and licensing edu videos he creates like this one. He has a gift!
@@marian20012 Didn't realise my acting was so convincing! I wasn't exhausted, just trying to think of something to do other than stare at the camera for 5 seconds. I'll smile like the joker next time :D
@@shawncalderon4950 Not currently actually, working, which I find much more tiring because of all the interactions. In 8 months I'll be back at uni and will have much more time and energy for videos!
My utmost respect and gratitude to you. Your material is golden. I understand that writing and making these videos takes a lot of heart, energy and time, but many people are very grateful for the work.
Yes! I am one of them.
Fantastic explanation. I took a grad school course on this ages ago, and I could never remember which circuit was which. Your "three logical possibilities" makes it much clearer and I don't think I'll ever forget it again.
Incredible! after binge watching through your videos, i sure am more passionate about electronics than before, thank you!!
Pretty amazing how Information dense and high quality this video is, amazing job ❤️
i like seeing your channel grow. Keep up the good work! Im a software guy but power supply topology junkie. your videos are great.
This is an amazing explanation of DC-DC converters. I thought I had a basic understanding of how they worked, but this new perspective genuinely helps me see how they work better, especially with the bit about substituting the diode with another MOSFET. can't wait for the next video!
Yeah, I didn't quite get that bit.
Why would the diode become reverse biased and block the current flow at very low load?
As I understand it, after the control mosfet switches and the inductor begins sourcing current to the load, it won't suddenly reverse current directions just because the load has dropped. It will just continue to amp up the current to maintain current flow. Or? What am i missing?
Really well explained. Thank you for the kind clarification of the DC/DC topologies, keep up the good work. Wish you the best!
Always a great explanation of how these tricky electronics work. I can watch your videos 10x in a row. So much info presented practically flawless.
Thinking of inductors as smoothing out current, and producing high voltage to maintain current is that one little bit of info I needed for the whole thing to fall into place for me. Always battled with the intuitive understanding here. Thanks mate.
The explanation of what an inductor does is so clear, I finally understand it. Been trying to figure out inductors for years but everyone just talks about collapsing magnetic fields and I glaze over. Thank you.
Thanks! I agree. People love to complicate things unnecessarily.
Man, if these videos had been around when I was studying EE I might’ve graduated 😂. Thanks so much for the insight and clarity. Gonna be binging your channel today!
I see that a few people have mentioned 4-switch "buck-boost" converters in comments.
These are not "classical" buck-boost converters, but actually converters that operate either in classical buck mode or classical boost mode according to the input and output voltage requirements and conditions. The required controller is quite complex. One built-in benefit is that synchronous rectification, with its inherent efficiency advantage, is "build in."
Well, …… up until now I have been using buck and boost converters to do what they do, but didn’t have a good idea about the why of things.
Thanks for a great explanation! I’ll watch this another couple times and do the stop and backup along the way. I don’t learn quite as fast as I uses to 50 years ago, but once it sinks in I’m good to go.😎
This channel deserves more attention, wishing you the best of luck, learned a lot!
You are amazing! How difficult would it be to explain the ZVS circuit?
Yes I definitely can! Already have a few ideas on how to demonstrate it :) But it may be a little while before I have time for that video
@@electrarc240 No worries at all. Take your time. You are doing a great job!
I had watched many videos about converters but this is the best.
I have been trying to find a good source to understand these converters and this was it. Thanks!!!
Excellent! Just what I needed to know. They are an excellent example of the use of the specific properties of inductors and capacitors as you clearly point out!
Your videos are among the very best for making concepts understandable. Just the thumbnail image in the title brought me new clarity on the topic. Very well done, keep it up. Thanks brotha
Love these videos. I got a computer engineering degree years ago (before google was even a search engine), so I know the basics of circuitry, mostly digital. I went into software development, and never really delved too deep in analog stuff. These videos are great for refreshing what I forgot, and expanding on that and taking it further.
This is as close to the digital domain as it gets, with the PWM controller being mostly a digital device :D Now imagine people in the 70s, trying to develop an SMPS with nothing but crappy transistors and feedback loops.
I remember reading Horowitz & Hill book, the section on how to design a switched-mode power supply with the preface being "please don't".
bro your explanation is amazing
I can watch this guy all day, so much concise information
this is incredibly explained well,. and thanks for no music in the background,. i have a radio if i want music,. nice
Great video, I now finally have something to point my friends to regarding how the converters work.
Note that most modern (synchronous) "buck-boost" converters actually use 4 N-MOSFETs (high/low on both in/out) and have integrated gate drivers, to avoid a lot of the shortcomings, typically internal to the switching IC, but some ICs allow the use of external FETs (all 4, or only high, or only low, depends on what is convenient for the application).
Yes I will definitely mention this in the next video, but as the four switch version no longer “pivots” the inductor I thought I’d leave it from this one to keep things clear
You are a godsend! I understood all three perfectly!!!
Your videos are just the right mix for learning. Fantastic job explaining a tough concept. Thanks!
Damn. Nice job man. It's a lot of work to do these videos and we really appreciate it.
Channel deserves more recognition for sure
Thanks for the demo w. the big inductor. It helped me refine my understanding of inductors
Watching your videos is a treat, I am watching while eating.
Thanks for taking Your time and effort of making this excellent video, and for sharing Your knowledge.
I can only agree withe all the other complementing comments in that this is a very clear and concise video that made me much better understand things that I previously thought I "knew".
So many thanks for that.
Best regards.
Excellent, as always!
One point I would emphasize: The expressions relating duty cycle with input and output voltage *_only_* hold up when the inductor current is continuous (i.e. the inductor current never "dwells" at zero at any time during the switching cycle). Once inductor current become discontinuous, the expressions become much more complex.
My apologies if it was mentioned and i missed it.
Yes, I didn’t mention it in this vid but will spend a while going over it and demonstrating it in the next part. Thanks btw!
Thanks, I'm fed up with shoddy buck modules and was looking at making my own. Looking forward to the next installment.
Great job. The best explanation I've seen so far.
I loved the analogy using the bike as a flywheel , brilliant ❤
This is one great teacher.
Well explained. I have been wondering how this stuff works for a couple of years.
Holy cow, this is so applicable! I was just researching the possibility of making my own custom battery chargers and thus trying to better grasp the essential concepts of voltage converters... boom, upload from ElectrArc on that very topic 23 min ago. Talk about good timing!
Same case with me
Sounds interesting! There have been papers written on how current ripple (discontinuous current in particular) can cause internal heating and shortened life in batteries, so keep that in mind.
@@electrarc240 Very good to know! Current ripple is not something I've looked into enough, so thanks for the excuse to dig deeper.
Do you happen to know what causes the internal heating, from a technical standpoint? Is it just bursts of over-current? Maybe brief over- / under-voltage at the limits of the cycle? Both? Neither? lol. I ask because most of my work is on solar and battery backup systems, where cells are rarely pushed anywhere near their charge / discharge current limits, and even the voltage range is slightly narrowed for longevity and safety. I wonder, could current ripple be expected to have any less detriment in this context?
Some battery technologies are more vulnerable to DC ripple in charging current than others. And it's a problem with high-density high-voltage batteries overall...
the cover itself was so informative i've entered and clicked like right away
Excellent explanation. Great work.
WOW first time I have ever seen you present, and this is an amazingly good video.
Instant sub from me and definitely deserved. 👍👍
Thanks!
BEAUTIFUL EXPLAINED SIR 🎉
Excellent description and interesting that you mention forward converters. Those were a thing back in the 1980s but fell out of favor, overtaken by flybacks and later, resonant conversion.
The one I held up was made at uni for the “energy project” group project. I guess they’re nice and simple so hard to go wrong for students! Flyback has the risk of producing dangerous voltage I suppose
That's a very good explanation waiting for more power electronics with similar explanation
I would love to have you as a teacher, you are awesome!
Keep up the awesome work.
You are definitely on your way of becoming the best 👌 electronics youtuber ever! Your videos are simply superb. I must admit that I'm a bit jealous. UA-cam really needs quality content like this. I wish I could make content this good.
Excellent as always!
THANK YOU!
Nice shirt❤
Lovely video. So relieving to have nagging questions clarified.
Great rundown! I want to see you do an episode on SEPIC topology
This was a good video, thank you looking forward to the next design video.
pretty clean explanation, loved it
Thank you so much. Really great video, really great explanation, enjoyed hearing you speak.
once again another excellent video from you. The bicycle demo was perfect! i am def goign to explain using that analogy from now on. You really do have a way with teaching. and the way you wield your obviously deep understanding of the concepts, you're definitely not just repeating the same tired analogies like so many science channels do, especially the space ones lol, you really bring a confidence and style that really make sense. I wonder how you'd do explaining cosmology and compressed matter physics.... lol
thanks again. wish you had a patreon hint hint
Thank you! I may make a Patreon once I am back at uni, but that’s 8 months away I’m afraid
If you want buck-boost functionality with partial isolation and no inversion, there are the CUK and SEPIC topologies which decouple input from output via capacitors so DC cannot flow straight through when the converter isn't running or a MOSFET has failed.
Love your video’s. Great explanations.
clear genius, subscribed, and i will be using jlcpcb. I have much switching to do to start and control a wind turbine.
Their boards are amazing value and pretty good quality especially for the price, I've been using them for years
im commenting before watching!....THIS is the video ive been waiting for! Cheers from Texas!
The video I was hoping you’d make !! Looking to try and start a Formula SAE team for my university and looking to get all the help I can , so thank you for your videos ((:
Wow good luck! Best thing you can do as a student, I learnt a lot more from that than the course itself!
Great video! Thank you for the visualisation of the inductor at 4:28. That's what I needed to finally understand what saturation means. Saturation was always a mystery to me, because it's important to choose a coil with a saturation that lies within the specs of the power supply you're designing. I feel stupid for never knowing buck-boost converters existed and that they can create a negative supply voltage. I could have solved many circuits with a buck-boost converter instead of a noisy charge pump. I'm assuming that the circuit needs regulation, because the voltage will drop under load?
Yeah some regulation would be a good idea, though if you can keep enough load to prevent the inductor current from ever reaching zero the output voltage will be fairly stable according to the equation shown at the end
Best explanation ever!
I have never seen a video on slo-mo setting in my life interestingly.
You are a genius, love your videos dude, keep on the good work!
Excellent Explanation
Superb video and explanation. Thanks
Looking forward to next video. Maybe you can build up to how a constant current regulator works :)
Awesome work as always.
great explanation
Amazing explanation
I have exam tomorrow but this seemed more important 💀😂
On DC-DC converters I hope!
Edit: I misunderstood ignore below
I must say i was quite disappointed in the statement there are no non-inverting buck-boost converters, because yes they exist, with 2 FETs and 2 coils sometimes in 1 IC package. I think what you meant was with one coil? The rest of the video was very good and i very much enjoyed it!
Thanks. When did I say that? I only ever mentioned the standard buck-boost as this video was just about the three “fundamental” topologies that are in the thumbnail
@electrarc240 you are absolutely right, I misunderstood when you were talking about "standard" buck boost converters rather than most/all. So there are other standard types that dont invert, just not the one you were talking about. I jumped to conclusions too quickly. My bad.
No worries! I should’ve probably mentioned other types anyway. I will in the next part
Very insightful, thanks.
Wow.... I hope to see more power electronics...
Great, there’s plenty on the way!
13:46 could this effect be used to create a virtual ground halfway between positive and negative for powering stuff like op-amps...?
Excellent video! Thank you.
Very very good video!!
15:35 the most important part :)
I didn't know casual pot smoking was allowed on youtube.
🤣🤣
Excellente vidéo ! Merci.
What a great video, I wonder if there is one like this for op-amps
I seem to recall EEVBlogs video on them is very good
12:23 -
❝Don't just stand there, let's get to it
Strike a pose, there's nothing to it❞
VOGUE❢ VOGUE❢ VOGUE❢ VOGUE❢
Just discovered you via the switch mode power supply video. Would it be correct to say: an SMPS is actually just the rectifier part of a linear power supply - but without any initial transformer to lower the voltage, so it's operating at mains voltage. (more efficient, or at least needing smaller parts, because of the higher voltage. I'm reminded of the 400 volt vacuum cleaners used on airplanes) -- coupled with a flyback/buck-boost DC to DC converter to greatly lower the voltage to useful-for-standard-electronics levels? Is that an oversimplification?
These are great videos! Keep up the good work!
As brits would say “cheeky video mate” ❤😅
nice explanation, thanks
Well presented
One suggestion offer the gerbers files for your projects and the components in the JLC PCB site
I’ve made a series on PCB design I really encourage people to do it themselves it is much easier than many think and you learn so much more that way
If I may request, could you explain the infamous ZVS circuit?
Would you happen to have a link for the buck converter board? I'm trying to make my own using some old inductors out of a blown up mppt charge controller. Not sure what i'm doing but that's how you learn! Any who id like to scope a buck converter with different freq and look at the output. Inductors I have are beefy 1mh so next is picking a fet or fet's for the job.
Great video. I think I missed something. Curious about the Buck-Boost converter's inverse output. Why the complexity of the circuit if all it does is reverse polarity?
Adjusting the duty cycle lets us turn the voltage up or down, it just happens to match the input at 50%
what a great vid!
Can you use a Buck-Boost converter to make a dual +/- power supply for an opamp? Since you already have +10V going in to the Buck-Boost, getting -10V on the output, and have a common ground, seems like it would work but... I'm not sure if there would be problems using it that way or maybe that's the whole point.
Yeah you can, but they are quite noisy because of the discontinuous current and many applications for bipolar supplies are analog circuits requiring nice smooth voltages so often they can’t be used because of that
2:46 IF YOU ALREADY HAD A RESISTOR
Why did you short the capacitor, why didn't you just use the resistor to discharge it properly ?
Lol I didn’t realise the irony of that shot. It’s just B-roll, I talk about a high current when you short a cap so might as well show it
@@electrarc240
LOL... Fair enough
Excellent!!