There are channels on yt whos channel name would suggest the host of said channel would be capable of teaching electronics and have a subscription of over 50k when they are clearly not capable and are lacking in even basic knowledge (cant even put together a sawtooth generator that works) and even should it have worked would have been useless as was not even adjustable in amplitude offset or frequency DOE despite claiming they have worked professionally designing power supplys etc as well as claiming they teach and lecture in their day job... then I come across a channel like this where the host clearly does know his s**t your channel is well thought out and presented and informative and educational the fact you have less than 250 subs makes me angry lol theres no justice you deserve to do well i really hope your channel eventually gets the recognition and subbs it deserves and until then hang in there fella and keep up the good work
Hello Tested to Destruction! Thanks for the comment, and thank you for the words of encouragement! I'm really glad that you're fired up about what we're trying to do here. It's literally our mission to make informative, and educational content. I'm glad you think we're achieving that! (Even if there is always improvement to be made) You're already helping us grow, for sure just by being a part of this community. Thanks for watching, keep the passion going, and I hope to hear from you soon! Cheers! (P.S. Looks like you don't have a business inquiry email set up. If you shoot us a an email at ours, I'll send you your very own EEforEveryone sticker. Shoot us an email and we'll work out the details) Here's how to find our email address: support.google.com/youtube/answer/57955?hl=en
I'm very bad at electronics so it could be a stupid question but would it be possible to remove those very high peaks of voltage by using a zener diode that stops the electricity and then let it flow when the voltage becomes too high? Maybe with a resistance to don't waste too much current
Hi Jotaro, Thanks for the comment! No stupid questions here. Zener diodes are one approach, however, there is real power being moved here. For example, the clamping diodes (External to the MOSFET body diode) are passing peaks 34A though them! 34A through a zener rated for a thousand volts... would be... a LOT of watts. However, 34kW is the least of our problems... because the switching time, or reverse recovery time (How fast a diode can transition from blocking, to conducting), for a zener diode will probably be too slow for it to clamp this ringing (high peaks of voltage) effectively. Your comment about resistance is funny, because it exposes a good point. The fundamental problem is that if small currents are flowing... the ringing isn't made any smaller. If my simulation is to be trusted... we would need to draw tens, or hundreds of amps off of this net in order to completely remove the ringing. Not an easy task! (And not very efficient either) Cheers, and thanks for watching!
I'm a relative electronics newbie so please forgive my ignorance if this is a totally stupid suggestion. What about having two transformers in series ? You could then halve the turns ratio on each transformer while maintaining the total ratio between the primary of the first transformer and the secondary of the second. Would this work ? Would this reduce the high spikes ? Would there be too much power loss ? Thank you. >
Hello Bodragon! I think it would be possible, but it may not be ideal. Most of the "spikes" come from leakage inductance made by imperfections in the transformer construction. Putting two transformers in series will add another place for that leakage inductance to have an effect, there could be some resonance between the two transformers, there are a lot of little nasty things that could start to have an effect. I haven't thought about it too long, but I can't think of a situation where two transformers in series would improve efficiency or reduce transients for a power supply. It would be worth a few moments to do some analysis or simulation to dive in deeper! We ended up using two secondary windings in series to solve this problem! It splits the transients in half, and provided an easy way to add more snubbers to share the load. Cheers, and thank you for reaching out! I love your creative problem-solving attitude!
Interesting idea. I'm working on something similar, but using a fixed frequency, fixed dead time fullbridge to give me roughly 13:1 on my battery voltage (24v nominal) followed by a boost converter to get to 380. I get full isolation and don't have to pass feedback across an opto. Yes, it is two stages, but both can be optimized and should each be able to hit 98% without getting too complicated.
Interesting Idea.. I'll have to think on that. What does your voltage range end up being on that intermediate bus (feeding the boost converter)? Out of morbid curiosity... I'd imagine 312 at an absolute maximum and (depending on power level) somewhere around 140-200V at full load. Does that sound about right? More generally, I think you'll agree that optimizing two power supplies for 98% efficiency is more difficult (or more effort) than optimizing one power supply for 98% efficiency, and the total part cost for two supplies will likely be more than a single power supply. That said, your application is very different than mine! It may seem trivial to the casual observer, but the voltage multiplication ratio for our ups is only 7 at a maximum, while yours is around 21! Considering this, I can see why you'd go for the two-stage approach. (P.S. I'd love to see some pictures of this project. It sounds awesome! Maybe shoot them out on twitter if you get a chance twitter.com/EEforEveryone Also, I'm open to other social media platforms if there's a big big one a lot of people in this community are on {slack, discord, etc})
Hello Ehsan, great question! We generally use LTspice, with imported spice models to more accurately simulate the system. Thanks for reaching out! www.analog.com/en/design-center/design-tools-and-calculators/ltspice-simulator.html
@@EEforEveryone I asked your linkedin account to learn your education and industrial experience background. Can make a video about yourself that you speak about your background and your way of research to acquire an information about electronics?
Hello Muhammed, in general, our channel trailer provides a lot of that detail in a general way. Without getting buried in specifics... I gained most of my experience by constantly doing projects that challenge me! It wouldn't be possible to know as much as I do without my education, for sure! Both are incredibly important. (To learn the theory and also apply it)
Hello Suhaila, Sorry about the slow response... Apparently this message got flagged as spam by TH-cam and got held for review... AAAnyways: Thanks for watching, and thanks for reaching out! Higher Frequencies don't necessarily mean "more power" but generally lead to higher power density (to a point). A part of the reason why is because higher frequencies can allow for a better balance between core and winding losses! (Improved Overall Efficiency)
![[DRIP] ‘Woke Up In Tokyo (RUKA & ASA)’ PREVIEW](http://i.ytimg.com/vi/QN44lcR_VkI/mqdefault.jpg)
There are channels on yt whos channel name would suggest the host of said channel would be capable of teaching electronics and have a subscription of over 50k when they are clearly not capable and are lacking in even basic knowledge (cant even put together a sawtooth generator that works) and even should it have worked would have been useless as was not even adjustable in amplitude offset or frequency DOE despite claiming they have worked professionally designing power supplys etc as well as claiming they teach and lecture in their day job... then I come across a channel like this where the host clearly does know his s**t your channel is well thought out and presented and informative and educational the fact you have less than 250 subs makes me angry lol theres no justice you deserve to do well i really hope your channel eventually gets the recognition and subbs it deserves and until then hang in there fella and keep up the good work
Hello Tested to Destruction! Thanks for the comment, and thank you for the words of encouragement! I'm really glad that you're fired up about what we're trying to do here. It's literally our mission to make informative, and educational content. I'm glad you think we're achieving that! (Even if there is always improvement to be made)
You're already helping us grow, for sure just by being a part of this community.
Thanks for watching, keep the passion going, and I hope to hear from you soon!
Cheers!
(P.S. Looks like you don't have a business inquiry email set up. If you shoot us a an email at ours, I'll send you your very own EEforEveryone sticker. Shoot us an email and we'll work out the details) Here's how to find our email address: support.google.com/youtube/answer/57955?hl=en
Hi cool video like always.
One of my favourites
Hi Luca! Thanks for watching!
I'm very bad at electronics so it could be a stupid question but would it be possible to remove those very high peaks of voltage by using a zener diode that stops the electricity and then let it flow when the voltage becomes too high? Maybe with a resistance to don't waste too much current
Hi Jotaro, Thanks for the comment! No stupid questions here.
Zener diodes are one approach, however, there is real power being moved here. For example, the clamping diodes (External to the MOSFET body diode) are passing peaks 34A though them! 34A through a zener rated for a thousand volts... would be... a LOT of watts.
However, 34kW is the least of our problems... because the switching time, or reverse recovery time (How fast a diode can transition from blocking, to conducting), for a zener diode will probably be too slow for it to clamp this ringing (high peaks of voltage) effectively.
Your comment about resistance is funny, because it exposes a good point. The fundamental problem is that if small currents are flowing... the ringing isn't made any smaller. If my simulation is to be trusted... we would need to draw tens, or hundreds of amps off of this net in order to completely remove the ringing. Not an easy task! (And not very efficient either)
Cheers, and thanks for watching!
@@EEforEveryone thanks for the explanation
I'm a relative electronics newbie so please forgive my ignorance if this is a totally stupid suggestion.
What about having two transformers in series ?
You could then halve the turns ratio on each transformer while maintaining the total ratio between the primary of the first transformer and the secondary of the second.
Would this work ?
Would this reduce the high spikes ?
Would there be too much power loss ?
Thank you.
>
Hello Bodragon! I think it would be possible, but it may not be ideal. Most of the "spikes" come from leakage inductance made by imperfections in the transformer construction.
Putting two transformers in series will add another place for that leakage inductance to have an effect, there could be some resonance between the two transformers, there are a lot of little nasty things that could start to have an effect. I haven't thought about it too long, but I can't think of a situation where two transformers in series would improve efficiency or reduce transients for a power supply.
It would be worth a few moments to do some analysis or simulation to dive in deeper!
We ended up using two secondary windings in series to solve this problem! It splits the transients in half, and provided an easy way to add more snubbers to share the load.
Cheers, and thank you for reaching out! I love your creative problem-solving attitude!
Interesting idea. I'm working on something similar, but using a fixed frequency, fixed dead time fullbridge to give me roughly 13:1 on my battery voltage (24v nominal) followed by a boost converter to get to 380. I get full isolation and don't have to pass feedback across an opto. Yes, it is two stages, but both can be optimized and should each be able to hit 98% without getting too complicated.
Interesting Idea.. I'll have to think on that. What does your voltage range end up being on that intermediate bus (feeding the boost converter)? Out of morbid curiosity... I'd imagine 312 at an absolute maximum and (depending on power level) somewhere around 140-200V at full load. Does that sound about right?
More generally, I think you'll agree that optimizing two power supplies for 98% efficiency is more difficult (or more effort) than optimizing one power supply for 98% efficiency, and the total part cost for two supplies will likely be more than a single power supply.
That said, your application is very different than mine! It may seem trivial to the casual observer, but the voltage multiplication ratio for our ups is only 7 at a maximum, while yours is around 21! Considering this, I can see why you'd go for the two-stage approach.
(P.S. I'd love to see some pictures of this project. It sounds awesome! Maybe shoot them out on twitter if you get a chance twitter.com/EEforEveryone
Also, I'm open to other social media platforms if there's a big big one a lot of people in this community are on {slack, discord, etc})
what is the simulation software you used ??
Hello Ehsan, great question! We generally use LTspice, with imported spice models to more accurately simulate the system. Thanks for reaching out! www.analog.com/en/design-center/design-tools-and-calculators/ltspice-simulator.html
Nice. You are getting better. Don't forget the voice level changes. Keep up the good work. By the way do you have LinkedIn account?
Thanks Muhammed! I will not forget. :) I don't have a linkedin, but we do have a twitter! twitter.com/EEforEveryone
Thanks for watching!
@@EEforEveryone I asked your linkedin account to learn your education and industrial experience background. Can make a video about yourself that you speak about your background and your way of research to acquire an information about electronics?
Hello Muhammed, in general, our channel trailer provides a lot of that detail in a general way. Without getting buried in specifics... I gained most of my experience by constantly doing projects that challenge me! It wouldn't be possible to know as much as I do without my education, for sure! Both are incredibly important. (To learn the theory and also apply it)
Is there an explanation for why as increasing frequency would give more power for a switching mode power supply ?
Hello Suhaila, Sorry about the slow response... Apparently this message got flagged as spam by TH-cam and got held for review... AAAnyways: Thanks for watching, and thanks for reaching out!
Higher Frequencies don't necessarily mean "more power" but generally lead to higher power density (to a point). A part of the reason why is because higher frequencies can allow for a better balance between core and winding losses! (Improved Overall Efficiency)
@@EEforEveryone
Thank you very much for the explanation.
Thanks for your video.