What makes you say that?

@@electrarc240 i han hear you are reading. I finished electrtonic collage in Riga and the teacher was doing same thing..

Yeah this video was more scripted than usual - I went on some long walks and ran through the whole thing dictating to my phone. So it was scripted but only so I didn’t forget anything I wasn’t just reading Wikipedia. My next video will be more natural. Also I am not very good at speaking so knowing what to say helps with that, you don’t see because of editing but pretty much every sentence I say takes multiple attempts because I stumble on my words a lot

Mostly just reading things online, application notes are particularly helpful documents - far more so than research papers

I did bro, I did

Not in this case, capacitance on the output of a conventional voltage source inverter is very undesirable it can cause quite a few problems

Yeah parasitical are everywhere, so you’re bang on point with that statement, unfortunately 😅

That is so profound, I'm not a student of electronics (yet) so it's pretty mind blowing yet intuitive in a roundabout way. Thanks for the response! 🙏🏾 I keep thinking that if we'd know how to tune these parameters to various resonances there will be some Lagrange Points where these effects are not parasitics but rather contributing to efficiency.. Though I also realize that for such proposition has probably been attempted by people that actually practice this science, and that this system is already optimized to the max in relation to our best understandings P.s Subscribed! ❤

@@AGI-Bingo I have seen soft switching topologies that actually rely on output capacitance to work, so again you're not wrong.

Nice prediction!

The gate driver which is integrated into the controller IC. I will cover this more but over multiple videos. Now that I have done one on MOSFETs themselves I can next cover gate drivers, then control!

@@electrarc240 thanks I appreciate the quick response. I'm going to read up on the function right now. Just wondering: could this be done with a 555 timer? I just don't know where to get the initial low DC voltage necessary to power it. Maybe store a bit in a small capacitor until we can get the output DC looping back? Anyway I'll be looking out for the next video. I just watched your MOSFET vid and it was fantastic.

​ @borisdorofeev5602 Probably couldn’t do it very well with a 555. And yeah the challenge of powering the controller before the power supply has started power supplying is really interesting. In the power supply I showed the controller is actually powered through a really high value resistor until the power supply starts up

​@@borisdorofeev5602 And thanks about the MOSFET video!

One day! I have other video plans for the next month or two though I’m afraid

Yes! And only one of you don’t need to run it in reverse!

Brilliant to hear, never stop learning!

Spoke to some but damn there neat.

Cheap fluke, but still a fluke :)

I have not no. They are very simple to design though and I think would be hard to use in many other teaching scenarios

Don’t we all…

Hmmm

Correct, but it was in a bin and a PMSM would certainly not have been 😅

My red and blue tape nearly fooled you though didn't it 😉

@@electrarc240 I have now watched the whole video: Very clearly explained! Well done.

I think the content on my channel shows that I focus on a range of things, but I think if one has to be a "one trick pony" automotive power electronics is the place to be. Not sure how being passionate will limit my career as that is a very rare trait these days. At university I would say 1 in 100 students are actually passionate for the subject and the rest are there for money or because of family pressure. Also back to RF I made a (bad) radio transmitter when I was 16 and it wiped out the villages internet every time I turned it on, Openreach vans started turning up all over the place so that's kinda put me off. Power electronics isn't regulated in the same way so I can actually have fun.

@@electrarc240 You say: "At university, I would say 1 in 100 students are actually passionate for the subject" Fred, like yourself my career started as a passionate hobby, Uni wasn't an option for me in my teens, my path was via Trainee and part-time release to Technical college, my technical training in Radio & Television Broadcasting took 4 years. In those days we used a Slide Rule for 'principals & calculations', if you had to use one you might well be forgiven for thinking it was a "back scratcher",😀 also all my examination sessions were written, and no coursework was taken into consideration. You Passed or Failed "on the day". If you were "ahead of the curve" in your student years, like me, you had classmates that thought you were just a plain weirdo/geek & you had the pi*s taken out of you right, or worse. All I saying is: 'I get it' when it comes to passion okay. I'm just trying to give you some friendly advice as a guy who spent some 40+ years in Electronics, ignore it if you want, that's entirely up to you. Firstly your "passion" may well have to come down to earth with a bump someday soon, when you have kids & a wife/partner, we all 'Work' because we need the money right, or are you quite okay to work for your "Passion" voluntarily? Maybe you still live with your mum & dad. Okay let me tell you some 'Facts of Life' regarding Engineering in the UK, I don't give a "tinker's cuss" who your current employer is. Engineering isn't a highly respected/ highly paid occupation in the UK, when you want/need the bigger bucks you'll have to move to Germany or side shift into Management, and your passion has to die for the greater good, at least for the hands-on side of Engineering. When I took early retirement from the Automotive sector my salary in 2009 was six figures. I doubt if you are anywhere near that in your current position. Whatever you can do in the UK, there's some guy, just as smart as you in China, that can do your job for the 'China Price". I'm telling you some truths here Fred. Telecommunications, Medical Electronics, NDT Principles & Techniques, are only a few of the huge and diverse areas of specialisms which now encompass 'Electronic Engineering'. Of course, you do what you have to do for "fun" but: "I love designing 'Switch Mode PSUs' won't get you where you need to be for the rest of your life! Spread your wings! Anyway, that my dear Fred is that, I have no more I wish to say or add as I am sure you'll choose your own path. I wish you well in your career 😉👍

@@telboy911I’ve never done this for money, I could have chosen a simple three year degree and already have graduated earning double what I am now but I chose the longest course because it’s what I enjoy. I could’ve worked somewhere else but picked F1 (twice) because of my interest and the fact it’s the best place to learn fast. Money isn’t really a problem for me so I see no reason to leave, there are plenty of interesting positions in the UK that pay plenty well enough for my simple lifestyle. This is genuinely all I do every day of every week, I get back from work at 7pm after doing electronics all day and stay up till 11pm doing more electronics at home. Weekends more of the same, this is actually my one and only occupation in life (bit sad I know). In reality my true passion is for teaching and doing this kind of thing (KZfaq), if I can keep up my current views I can live off this which would be my dream. It’s like teaching at uni but the people watching actually care. Though I’d want to do something else too to stay “relevant” and keep learning. Also I do a lot more than is seen here and on my LinkedIn, I’ve been doing electronics for about half my life and I’m only 20, so I’ve had plenty of time to dabble in many fields, I’ve simply honed in on the one I find most interesting. Hopefully you’ll see over the next few months that I am not just a one trick pony

The inverter acts as a buck converter between the battery and motor phase windings. It controls the current to the motor by chopping up the connection between it and the battery. During the times the battery is disconnected from the motor phase, the current in the motor phase is allowed to continue around the motor phase. Because the current in the motor phase is constant, but the current from the battery is turned on and off, the average current in the motor phase is higher than the average current from the battery. However the power going from the battery to the motor is the same. Although the average current in the motor phase is higher than the average current from the battery, the average voltage across the motor phase is lower than the voltage of the battery.

@@fluteplayerify Thank you for the explanation, its clearly a difficult concept to convey in words, there is a case to be made for a visual representation.😁