I love the way in which you break things down. Imparts knowledge in stead of just information... and extremely helpful for someone like myself who's trying to learn electronics.
Why you only have 50k subs is a mystery to me. I randomly found your website while searching for info on buck converters, and you gained me as a sub with just one video. Keep up the good work, buddy!
i used to say to others, their videos are the best in explaining, now i found new best explain-er videos :P really cool, helps all beginners, even pros new to the application topic. thanks!!!
Very great expainations about circuits and high understanable.Especially, that you explain, why is every part where it is an what does it do there. Glad to learn from you. Thx and greatings from Germany!!
I really appreciate your video. So many idiots on the internet explaining buck converters and feedbacks in such a confusing way. Yes you can just buy the LMxxxx, but I love the way you explain the DIY version, so that using an LMxxxx is just another step up. Very nice.
great video, for me you explain it basically better than all those academic videos, if only you can explain more related to the higher power systems, liek inverters for EV it will be great
Consider an electrolisys aplication. The plates and electrolyte form a capacitor. In the begining, the electrolyte is cold and conducts less requiring higher voltage to push current through. Then as the electrolyte warms it becomes less resistive and conducts more current. Annunregulated buck converter dops in voltage with a higher current draw. And with electrolisys, lower voltage end up drawing less current and produces hydrogen more efficently. The current voltage responce us more like a zener diode and resistor than a simple resistor. This loosely uses current to warm up the electrolyte making it more conductive so that it can pull more a little more current at a lower more efficent HHO generating voltage. It loosly self regulates the current without feedback circuitry. An adjusable pwm circuit can may be more interested in lowing the duty cycle with feedback from a temperature sensor to further regulate how much current goes through the cell by lowering the outut voltage further, thus controlling the watts consumed by the HHO cell and further improve efficency.
Hi, a schottky diode is used because it is a high speed switching diode, compared with a 1N4001 series diode. High speed because of the switching speed of the converter output.
The inductor has a current charge rate.. The capacitor has voltage charge rate.. Together, if you know how to sense voltage discharging edge triggering, you can choose when to charge the cap n inductor.
Hello, maybe I still make something wrong. There is a schematic at 8:28. You use IRFZ44N. It's an N-Channel, but you use a P-Channel symbol. Another is the value of L and C. The value of L can not be compatible with 100UF E-Cap.
Wow... Your explanation is so good! Exceptional... I'm learning about power supplies for Nixie tubes and your information is invaluable. I only wonder about safety of for example a NE555 based PS. Dedicated IC's have protection circuitry but I read that the often used Maxim 1771 has a poor design because the gate of the Mosfet is pulled to ground by a resistor: quote "a substantiol amount of power is wasted in the FET" But I need to look into that much more... I want a safe PS so I can leave a home made HV PS safely on 24/7.
How did you calculate the inductor and capacitor values. Also, what factors did you take into consideration while calculating those values? Finally, how did you select the switching frequency to turn on and off the Mosfet?
Hey electronoobs. Unas preguntas. Que has estudiado para saber tanto de electronica? Que libros, webs, videos de yutuf recomiendas para alguien que se quiera meter? Que proyecto de los de tu canal es el que mas te ha gustado? Y que proyecto crees que esta bien para alguien que no tiene mucha idea?
He estudiado ingeniería electrónica. Recomiendo mirar tutoriales de TH-cam y probar todo emepezando con pequeños circuitos como este. Recomiendo que te compres un Arduino y hacer pequeños tests. Como libro te recomneido Basic Electronics de Walter Banzhaf. Saludos!
This is a good video and I don't want to have to critisise here buuuuuuuuuuut ... I don't see how the circuit at 8:28 could work, or at least work well. I know how a buck converter works, but it's the way the mosfet gate is being driven here that is getting at me. Surely like this the gate won't get a good square wave and instead will be more of a ramp wave because of the mosfet gate capacitance, right? And wouldn't that get even worse with more load due to the miller effect? And also, having an n-channel mosfet connected like this, surely the gate voltage could never get high enough to turn the gate fully on so the mosfet will be in it's linear region? Also it's drawn here as a p-channel mosfet where as an IRFZ44N is n-channel.
Yes there is a N- channel mosfet and there should have been a P channel just like you said. If you put a N channel like that it will be mostly closed or just very slightly opened. Well the miller effect is really a problem only in case of transistors used as amplifiers, since it changes the input and output impedances slightly and can limit the frequency range of the amplifier, but in case of switching transistors it shouldn´t be a problem. The gate doesn´t get the same square wave as it comes out from arduino, but it is a lot sharper that you might think, to make it ever sharper I would decrease the value of the 10k resistor to maybe 2-3k depending on the datasheet of the bipolar transistor. But because of the approx. 33kHz frequency the mosfet operates on it is low enough to make sharpness of the edges more than sufficient to fully open and close the transistor (at least my oscilloscope says that :) ) hope that helped. if you want to correct me on something please go on :)
Couldn't you use a OpAmp for the gate of the MOSFET..? To Regulate the output or charging of the capacitor based on the resistance or discharging of the capacitor?
Hi I the video where you explain the feedback a P-channel mosfet is shown. But should the source not be connected to the input? Otherwise the body diode of the FET will make it conduct always.
Great video, super advice on technical aspects. What PWM frequency did you use on your own switching circuit? I couldn't read your scope you were moving so quickly :)
What about making your own very high voltage (100v+ dc) boost converter, You just adjust the voltage divider to suit the IC and get a larger inductor and higher rated capacitor?
Hi, your Arduino in the circuit diagram at 8:28 is not powered (GND not connected). Could you please explain how did you do that other than connect the USB? Thank you. Nice video overall.
hello, i tried to use the mentioned P-most but the voltage at the input was almost the voltage at the output, when i tried connecting a nmosfet the 20n06 the voltage was ranging rougly from 1->5 volts when the input was about 10-11 volts any idea why?
Thanks a lot for this great tutorial. 🔴 In my project, I use a solar panel to charge a 6V battery that supplies 4 outputs: 3.3~5V 0.12mA, 3.6~6V 0.12A, 4.8V 0.27A, & 3.4~4V 0.5A. Now, should I use the Buck converter for each single output? Is the Buck converter best choice for my project?
Very much subject to the dropout voltage of the buck converter especially when the battery voltage falls down. The multiple output requirements usually entails the use of a tapped inductor or transformer to avoid intermodulation problems between multiple buck converter regulators operating on a common supply.
![กี่หมื่นฟ้า | Your Sky Series EP.1 [1/4]](http://i.ytimg.com/vi/vLGjxFL6U_I/mqdefault.jpg)
Its 2023 and this circuit will help me on my thesis, ty Electronoobs, I will credit you in the references.
This is the best tutorial I've heard on buck converters, I actually understand now.
Thank you, I subscribed.
It's also very nicely explained by Adamant IT.
I love the way in which you break things down. Imparts knowledge in stead of just information... and extremely helpful for someone like myself who's trying to learn electronics.
I never understood how buck converters work until now. Thank you for a great and simply presented tutorial
This is one of the best explanations of a buck converter that I've seen. Simple and to the point.
Why you only have 50k subs is a mystery to me. I randomly found your website while searching for info on buck converters, and you gained me as a sub with just one video. Keep up the good work, buddy!
oh. Thank you very much!
At last...one feels illuminated. This is a much better way to explain the idea. Thanks sir.
I've watched a bunch of videos to get a grasp of this concept. Yours did the trick Thank you sir!
Great video editing. You're very good at explaining things in a clear, concise manner that isn't too technical, yet still informative.
One of the Best video till date about buck converters
I did! I did learn something! - Another Mechanical Engineer stopping by!
i used to say to others, their videos are the best in explaining, now i found new best explain-er videos :P really cool, helps all beginners, even pros new to the application topic. thanks!!!
Very great expainations about circuits and high understanable.Especially, that you explain, why is every part where it is an what does it do there.
Glad to learn from you.
Thx
and greatings from Germany!!
I really appreciate your video. So many idiots on the internet explaining buck converters and feedbacks in such a confusing way. Yes you can just buy the LMxxxx, but I love the way you explain the DIY version, so that using an LMxxxx is just another step up.
Very nice.
Your interpretation is very clear. I have a mechanical background. But I always like to learn some in power electronics !
You rock my world, I finally understand stuff thanks to you!
Best video on whole Internet.
Excellent description. Very clear diagrams that help clarify the concepts. Thank you.
Interesting and well thought out video, as usual, with very informative and useful content.
Thank you!
Best video on Buck Converters
Unbelievably high quality content.
@Electronoobs can you make a tutorial of calculating the parameter of the component of each of the converter? that should help me a lot
Subscribed within less than 3 minutes. That is all.
great video, for me you explain it basically better than all those academic videos, if only you can explain more related to the higher power systems, liek inverters for EV it will be great
Very nice explaination. Imho your best Video so far - you're getting better and better.
Thanks a lot for better explanation of working of buck converter.
Consider an electrolisys aplication. The plates and electrolyte form a capacitor. In the begining, the electrolyte is cold and conducts less requiring higher voltage to push current through. Then as the electrolyte warms it becomes less resistive and conducts more current. Annunregulated buck converter dops in voltage with a higher current draw. And with electrolisys, lower voltage end up drawing less current and produces hydrogen more efficently. The current voltage responce us more like a zener diode and resistor than a simple resistor. This loosely uses current to warm up the electrolyte making it more conductive so that it can pull more a little more current at a lower more efficent HHO generating voltage. It loosly self regulates the current without feedback circuitry. An adjusable pwm circuit can may be more interested in lowing the duty cycle with feedback from a temperature sensor to further regulate how much current goes through the cell by lowering the outut voltage further, thus controlling the watts consumed by the HHO cell and further improve efficency.
Thank you very much, your video is super well taught and finally I understood how these circuit work!
I wish the best to you. This was beyond helpful
Hi, a schottky diode is used because it is a high speed switching diode, compared with a 1N4001 series diode.
High speed because of the switching speed of the converter output.
Yes Yes yes videos like this we need take a hug like from your old friend "(me)"
Wow! So clear and concise explanation!!! Thank you!
Nicely illustrated!
Good video, well explained. Maybe a brief explanation of the application of the fet and bjt would complete an otherwise very informative tutorial.
The best explanation I have ever seen
Very good explanation. Thanks for your video.
Very informative and easy to understand, thank you
Excellent!!!!! Liked to know how to change a 40vdc battery trimmer to a wired one. 110vac. A boost switch? How it works?
Excellent lecture and demo . Thank you .
Your video quality is outstanding! Great videos, keep up the good work :)
You use the LM2576 circuit.
People in China use the LM2596 circuit for the same construction.
The inductor has a current charge rate..
The capacitor has voltage charge rate..
Together, if you know how to sense voltage discharging edge triggering, you can choose when to charge the cap n inductor.
Wow! This is such a great video! Informative and so easy to follow!!
One of best explonations 😁 thank you 😁👍
You're a great teacher!! Very clear :D
Thank you!
please make a tutorial for DC motor drone! waiting it for a long time ! please make it
Hello, maybe I still make something wrong. There is a schematic at 8:28. You use IRFZ44N. It's an N-Channel, but you use a P-Channel symbol. Another is the value of L and C. The value of L can not be compatible with 100UF E-Cap.
You're correct, it should be a ptype mosfet. An ntype wouldn't work here.
Awesome tutorial
As usually good and very solid lecture.
Wow... Your explanation is so good! Exceptional... I'm learning about power supplies for Nixie tubes and your information is invaluable. I only wonder about safety of for example a NE555 based PS. Dedicated IC's have protection circuitry but I read that the often used Maxim 1771 has a poor design because the gate of the Mosfet is pulled to ground by a resistor: quote "a substantiol amount of power is wasted in the FET" But I need to look into that much more... I want a safe PS so I can leave a home made HV PS safely on 24/7.
Excellent explanation.
How did you calculate the inductor and capacitor values. Also, what factors did you take into consideration while calculating those values? Finally, how did you select the switching frequency to turn on and off the Mosfet?
Hey electronoobs. Unas preguntas. Que has estudiado para saber tanto de electronica? Que libros, webs, videos de yutuf recomiendas para alguien que se quiera meter? Que proyecto de los de tu canal es el que mas te ha gustado? Y que proyecto crees que esta bien para alguien que no tiene mucha idea?
He estudiado ingeniería electrónica. Recomiendo mirar tutoriales de TH-cam y probar todo emepezando con pequeños circuitos como este. Recomiendo que te compres un Arduino y hacer pequeños tests. Como libro te recomneido Basic Electronics de Walter Banzhaf. Saludos!
Whoa, top notch video editing on this! Your channel is really picking up. I was already subbed, but this video made me turn on that bell!
Thank you very much!
Really, really nice work, man!
just like GREAT SCOTT, intro. and Channel name quite similar to ELECTROBOOM 💥💥💥
F* off
IRFZ44N is an N channel transistor you need P channel
True!
i think it would work just fine if you would put an N channel close to ground
P channel have 10 times higher resistance w.r.t. n channel
So n channel is efficient
(S-D resistance)
When is the best time to use an optocoupler for feedback? How do you get around frequency limitations for high frequency optocouplers?
Great video. Excellent explanation. Congratulations !
Awesome job. Keep up the great videos.
very nice, very clear, thank you
What ic should be used for upto 15 amp of current like lm2576 for 3 amp.
Okay,for N-MOS in Buck converter,i didn;t see any bootstrap circuit for High side switching
Dude just too good
Very well explained👍👌
Thank you💖💞💓
does the voltage and the specs of the MosFet are important or can you choose a random MosFet ? Thank you
WOW! What an awesome tutorial!!!! Thanks man!!!
This is a good video and I don't want to have to critisise here buuuuuuuuuuut ... I don't see how the circuit at 8:28 could work, or at least work well. I know how a buck converter works, but it's the way the mosfet gate is being driven here that is getting at me. Surely like this the gate won't get a good square wave and instead will be more of a ramp wave because of the mosfet gate capacitance, right? And wouldn't that get even worse with more load due to the miller effect? And also, having an n-channel mosfet connected like this, surely the gate voltage could never get high enough to turn the gate fully on so the mosfet will be in it's linear region? Also it's drawn here as a p-channel mosfet where as an IRFZ44N is n-channel.
Yes there is a N- channel mosfet and there should have been a P channel just like you said. If you put a N channel like that it will be mostly closed or just very slightly opened. Well the miller effect is really a problem only in case of transistors used as amplifiers, since it changes the input and output impedances slightly and can limit the frequency range of the amplifier, but in case of switching transistors it shouldn´t be a problem. The gate doesn´t get the same square wave as it comes out from arduino, but it is a lot sharper that you might think, to make it ever sharper I would decrease the value of the 10k resistor to maybe 2-3k depending on the datasheet of the bipolar transistor. But because of the approx. 33kHz frequency the mosfet operates on it is low enough to make sharpness of the edges more than sufficient to fully open and close the transistor (at least my oscilloscope says that :) ) hope that helped. if you want to correct me on something please go on :)
I have some questions,
shouldn't be the gorund of arduino connect to the circuit?
And why Vin is connected to input voltage? Can arduino stand 12V ?
how do i get a 15amp from this buck conveter? please reply.
how to choose or wind the inductor ? , waiting for boost and buck-boost converter videos !
Saliya Ruchiranga Use a ferrite core to wound a simple wire on it and then measure it using LCR meter.
Great explanation!! Really nice video. Like it!!
Couldn't you use a OpAmp for the gate of the MOSFET..? To Regulate the output or charging of the capacitor based on the resistance or discharging of the capacitor?
Wow, thanks a lot . That's super cool
Great video as always. 👍 how to add current limiting to it and also short circuit protection.
Very helpful, Thanks for sharing.
hey bro can we make a buck converter for convert 220-240v ac 50hz into 35v dc 8a without using transister
or mosfet
Nice explains thank you sir
Best explanation👌🏻👌🏻
Great videos as always. But I would suggest changing the background music. It sounds like baby music... Thanks!
*BEST INTRO EVER* love IT !
Why is the diode in parallel? Shouldn't it be in series to the coil?
amazing explanation
Hi
I the video where you explain the feedback a P-channel mosfet is shown.
But should the source not be connected to the input? Otherwise the body diode of the FET will make it conduct always.
Simply AMAZING!
Made arduino one ,it works!!!!thank you
Can you please tell me what was the inductor you have specifically used in that project?
Great video, super advice on technical aspects. What PWM frequency did you use on your own switching circuit? I couldn't read your scope you were moving so quickly :)
Great video. Pleade tell me which mosfet i can use to built a buck converter 50v to 120v dc input with 12 v dc fixed output, load is max 1 amp
You are the best ! Great video thanks bro :)
Sir can you please make a tutorial on how to make toroid from basics
What about making your own very high voltage (100v+ dc) boost converter, You just adjust the voltage divider to suit the IC and get a larger inductor and higher rated capacitor?
Hi, your Arduino in the circuit diagram at 8:28 is not powered (GND not connected). Could you please explain how did you do that other than connect the USB? Thank you. Nice video overall.
Best satisfied chanel❤
What would I use if I wanted to lower 40v to 36v or 12v
Thanks for the best-detailed tutorial. Is it ok if I use one of the simple voltage regulator to take 5V to 3.7V?
excellent video
Great, but it is pretty hard to find LM2576 - please make it with UC3842 cheap & easy to find it - thank You :)
really good video
hello, i tried to use the mentioned P-most but the voltage at the input was almost the voltage at the output, when i tried connecting a nmosfet the 20n06 the voltage was ranging rougly from 1->5 volts when the input was about 10-11 volts any idea why?
Hi, did you find any solution of your problem? I am trying to make a buck converter , your suggestion could be helpful for me.
Thanks a lot for this great tutorial. 🔴 In my project, I use a solar panel to charge a 6V battery that supplies 4 outputs: 3.3~5V 0.12mA, 3.6~6V 0.12A, 4.8V 0.27A, & 3.4~4V 0.5A. Now, should I use the Buck converter for each single output? Is the Buck converter best choice for my project?
Very much subject to the dropout voltage of the buck converter especially when the battery voltage falls down. The multiple output requirements usually entails the use of a tapped inductor or transformer to avoid intermodulation problems between multiple buck converter regulators operating on a common supply.