Electronics tutorial - Inductor saturation 

Keep up the good work educating others on electronics. Since being sick I've been scanning youtube much more than normal and came across your videos. I've been a design engineer for a few decades now and I really, really like your teaching approach - teach, show on scope, look at data sheet...Well done!

Great video! I like the fact that you always explain the datasheets. THANKS!

‘FesZ’ another great lecture. Some professionals know the Fundaments and manage well technology; others have didacticism to teach and share the knowledge, but have gaps to link theory and practice. Lucky for us, you very good in all those sides! If you already are not a teacher or instructor, you should think to become one. Greeting from Brazil to Romênia and please continue this great work.

can you do a video about estimating core losses in ltspice?

Excellent video! 👍🏻 You forgot one other important parameter that can cause saturation and that is heat. So when the core is heated up (even by some hot external component) the inductor will saturate more. But this will also happens with more current through the inductor itself. So in the end you have a double penalty. The current causes saturation as well as current heating up the wire (inductor). Unfortunately this is rarely shown in datasheets and as far as I know Sumida is the only manufacturer that gives the inductance vs current curve by two different temperatures (20 and 150 degrees C)

Your channel is great..............but this video does not have subtitles

Would it add performance to a Motor/Generator , to use a field core from sheets of silicon steel. With holes taking away approximately 30% -40% up to 65%+/- of the steel away to use it as a support material for a ferrite core, possibly by adding the ferrite as round bars, especially if the motor uses a vfd or is a bldc /electronically commutated motor. Also a Generator or pma can spin at high speed, producing a high frequency AC current. Would the ferrite hybrid core offer any efficiency gains? Being ferrite is too fragile to reliably be used in motors, especially those where the cores are rotors, or part of the mounting frame.

Hello, This is one of the most valuable illustrations I have seen on inductance. Where you illustrated how a permanent magnet can influence the the inductance was especially interesting. I HAVE A QUESTION ABOUT THIS: could you actually DECREASE the flux in the core by an arrangement of permanent magnets? ALSO: If you are using an AC input with no offset current, and since the current is increasing and decreasing at the same rate, won't the flux also flip with the current? If so, then how does the core saturate if the flux is growing and decaying at the same rate--does saturation (in this case) just grow, go back to zero then 're-grow' in the opposite direction. My only guess would be that in this case the saturation occurs at the peaks of each half-cycle??

Really good explanation! You helped me learn a lot. What you do really is important for humanity, learning is important.

I wish I could have viewed these short tutorials when I was doing my degree. I hope education professionals direct their students to view these as a supplement to their studies. Keep up the great work.

One thing that they say in many videos is that "IF THE INDUCTOR REACHES SATURATION, THEN ALL INDUCTANCE VANISHES". Doesn't it actually fall to the value that it would have if it was 'air-core'?

I wonder if this matters for instantaneous current. For example, if I have 0VDC bias, but 28Arms, and inductor is rated for 30A but with Isat being 15A, how will my circuit be affected (at 100kHz)? Awfully specific, question, I know.

hi, how to find big core saturation point, for example EE55 or EE65, small core is very easy but big core very tiring?

Excellent info, thanks!

Thank you

Great video!

Sir , I have understood the different parameter which influence the behaviour of inductor. Now say some one has EE core need to know its parameter such that in which frequency core generate or maintain its higest inductance so that we can fix our smps frequency first, then how much temp it holds its inductance value , how to measure saturation flux density, etc.Say i have a core but dont have any data sheet ,now i have to find out its property for implimenting core in SMPS.

If possible could you simulate a common mode choke as found in a lan transformer . This caused months of problems when using on POE . I think common mode choke got saturated so as cable got longer line noise went up . Workaround was to flip transformer so the common mode choke was on the phy side vs the line side . Better results but I don’t really understand what was happening .

Hey, thanks for this video and for the other videos. I have a question about a datasheet of an inductor core that I picked up, it has only Bsaturation (magnetic flux density at the saturation current), could you describe how one can calculate the saturation current out of it? Thanks in advance

Excellent, thank you very much

Are there more informations about the power amplifier?

Very helpful video. But I have a couple of questions. For the 100mA offset case, I calculated 35 ohms instead of 32 ohms. I know it is close, but just wanted to make sure I understood things. (50x (750/440) - 50). Also, you are using the BLM21PG221SN1and say the datasheet has the impedance listed at 80R at 10Mhz, but when I look up the data sheet it is 220 ohms at 100MHz. Is that correct? Thanks again!

Hi very interressing video, thanks. Can you show the inside of your DIY signal generator ?

Are inductors trying to reduce the magnetic field or the opposite? I still have a lot to learn.

Ever considered doing a DIY saturation tester?

Hi man, your videos are great. I have only one question. Can I use paralel inductor for prevent saturation. Is this stution have a disadvantages?

6:14 So if you placed a small electromagnet nearby a inductor, you can satured the inductor galvanic ? Can this not be used on a SMPS to control the output ?