+1

I now realize schools, colleges, and universities are 60-80% time wasted.

@@jak_k depends on the professor. There are some brilliant professors out there.

@@user-nx7sd1yi7q 'some' yes. And others hamstrung by poor curriculums created by dinosaurs.

It really depends on the level of "honesty" of professors. Unfortunately, electrical Engineering is being taught in Mooost places (not all) as a BIG LIE where the professor is pretending to be saying stuff based on obvious reasons that they don't REALLY understand and will never understand because of their arrogance, and the students are nodding along faking that they understood what he said.. and then the exam comes as a 90% Replica from previous years' questions, so it's very easy to graduate as a Null electrical engineer in this world.. That's why i appreciate people like GreatScott who really doesn't feel the need to act like he's a-know-it-all guy.. he repeatedly says a lot in his videos that he didn't get something or didn't manage to do something with no fear of people judging him because he ACTUALLY HAS VALUE. Unlike most dumb arrogant professors.

Awesome. Thanks for the feedback :-)

SAME! I thought I was the only one that bothered with that in every video. You are running the marker!

Why does he do it? I do wonder what that is all about.

Thank you! hahaha

@@ramonloeffen8572 I think it to remark something over a complete sheet and to focus into the main point, but normally it ends up being annoying when he start blurring and inking the marker.

@Laurentiu Popescu That is called sadistic personality disorder, he totally knows what we are feeling.

Good luck m8

@@m.3041 if only someone would've told me this at high school. Not saying school was bad, but thank u.

Rip, my prof sent an email telling us that the exam will take place tomorrow on Skype😂😂😂

@@m.3041 what

Where are you from?

Upload - 1 hour ago. Comment - 4 days ago. Me - Wutt!?

@@raghavendrasharma225 patreon

Yeah! The thing with saturation is something you really have to take into count. Buck converters are also the most forgiving converter type, when it comes to coil saturation - if it happens in a boost converter, it's much worse and will cause huge current spikes, that can easely blow your transistors. And DC/DC converters are not the only thing where it matters - I have also (a long time ago, when I didn't know very much about electronics as I do now) done the mistake of using a "common mode" coil in an audio filter for a speaker. I just searched on the web page for an electronics supplier and thaught "that coil looks awesome - so small and have such an high inductance and still such a low DC resistance". The thing was that, at the time I didn't know what a "common mode coil" was and it didn't help the fact that they didn't write anything in the data about it being a suppression coil for "common mode noise". They just wrote it was 2 x 6 A inductor with an inductance of 6 mH - so I thaught "good, then I can either put both windings in series and get even more inductance or in parallell to handle more current". I don't remember wich configuration of those 2 I used, but both is equally bad and will end up saturate the coil heavely already at small signals - since the magnetic field from the 2 windings are not canceling out each other as it should du when used as a common mode coil. Needles to say - when I then tested the speaker, it sounded like total crap, hahaha. I did in fact suspect it was because of saturation though (wich causes distortion of the AC audio signals) - simply because the coils data looked way "too good" for it's size. I ended up winding my own coils instead and test them for saturation by running low frequency AC thru them (like 50 Hz from a variac connected to the mains or test tone from the speaker amplifier) and slowly increase the current and record the signals on my audio card to check when the waveform start to change, wich indicates saturation (I had no oscilloscope at that time). That was much cheaper than buying coils that had enough inductance for my filters and still can handle the current. Later when building some DC/DC-converters, same thing applies there. Once you get over like 50 W of power (my biggest one, so far, is about 9 kW and works as a power regulator for an electric furnace), it's usually better to wind your own coils. You can find ones that can handle a lot of current relatively cheap, but then the inductance is very low. Using such low inductance coils is possible, but makes it much harder to design a high power DC/DC converter, without getting large problems with switching noise and "ringing" because of stray inductances and capacitances. That problem will cause a lot of power loss and often blow up your transistors if not taken care of properly. It's much easier if you have large inductors and capacitors - if your wind your own inductors, you can often get much larger ones than the one you typically can buy (that have very high inductance, compared to the current they can handle).

Speeder84XL I love the internet

@@Psyden5757 the internet is literally the largest collection of human knowledge *ever* period

Thanks for the feedback :-)

A Patron?

Sure

We need that please! So useful nowadays

GreatScott can you make video about vacuum tubes and how to make vacuum tube amplifier or small pre amplifier, or VTTC :D pls

@@matejnemergut for HF RF?

You're welcome :-)

thats really a good idea!

@@certified-forklifter its not only about language either, for example we might get the option to disable commentary audio or background music on a gaming video etc. its not hard for youtube to do so, they have had multicam livestream for years.

@@pcislocked yeah

Very good idea

1: Agreed. VL is exponential (well, log), not linear. 2: I think GS was confusing two points: (a) asymptotic approach to some voltage where di=0, versus (b) what happens if you attempt to power ever bigger loads (ie: smaller RL), with him mentioning taking the load resistance to be a short -- which will definitely achieve saturation. 3: Why -- I'm assuming you're referring to fact that inductance is proportional to area of the loops, ie: proportional to r^2. Hard to say how this is related to "bigger-ness", since that could be assessed in 1, 2, or 3 dimensions!

I can put it on my to do list

GreatScott! That would be awesome, thank you