My new Tutorial Video about Inductors, Magnetic Circuits etc.  - Page 1
Forum section: electronics / projects

author: Post_Apocalyptic_Inventor
author_rank: Contributor
timestamp: June 29, 2014, 12:45:23 am
content: Hello.After a really tough month I have finally managed to finish my latest Tutorial video.This time I'm talking about the basics of inductive components.The video is part 5 of my SMPS-Tutorial Series and it took me about 33 working hours to finish it.I hope you enjoy it.Link:

author: switcher
author_rank: Regular Contributor
timestamp: June 29, 2014, 12:53:58 am
content: I really like your videos, great to see another.I also like your intro 'titles' very 1970s 'Horizon'BTW, how does your basement look now, did you finish it?

author: Post_Apocalyptic_Inventor
author_rank: Contributor
timestamp: June 29, 2014, 11:09:57 am
content: Thanks a lot ! I appreciate it. The intro is intentionally old school. I love the old Horizon-Episodes and I have watched the majority of the episodes that are uploaded on youtube by now.I have done some more work in my basement, but it's not yet worth making another video about it.I also spent a lot of time cleaning up my garage. It looked nearly as bad as the basement

author: MickM
author_rank: Regular Contributor
timestamp: June 29, 2014, 03:55:52 pm
content: Hi;I enjoy your videos and appreciate your effort too.I am a subscriber.Mick M.

author: Tinkerer
author_rank: Frequent Contributor
timestamp: July 02, 2014, 01:13:41 am
content: Very nice videos. Not many people are able to convey things as well as you have.

author: miceuz
author_rank: Frequent Contributor
timestamp: July 02, 2014, 08:15:57 am
content: Just discovered your channel and incidentally I'm currently interested in SMPS, please, keep them comming!

author: T3sl4co1l
author_rank: Super Contributor
timestamp: July 02, 2014, 09:41:20 am
content: Not to divert attention, but if anyone's interested in a written format:http://seventransistorlabs.com/tmoranwms/Elec_Magnetics.html

author: EEVblog
author_rank: Unknown
timestamp: July 02, 2014, 10:07:40 am
content: Quote from: Post_Apocalyptic_Inventor on June 29, 2014, 12:45:23 amHugeto anyone who spends that amount of time producing a tutorial video.

author: Post_Apocalyptic_Inventor
author_rank: Contributor
timestamp: July 04, 2014, 07:09:19 am
content: Thank you all very much for all the positive feedback. That's what keeps me running. The video seris is (at least for my humble standards) already a big success. Probably to a large portion due to this truly great forum !

author: firewalker
author_rank: Super Contributor
timestamp: July 04, 2014, 07:46:46 am
content: Excellent!At he end of this tutorial cycle, you could show how to calculate inductor and capacitor values for given current and voltage ripples (for ideal converter off curse).Alexander.

author: Post_Apocalyptic_Inventor
author_rank: Contributor
timestamp: July 04, 2014, 07:17:08 pm
content: Yeah. Thats a good idea. I'll add it to my list

author: MJR
author_rank: Contributor
timestamp: July 04, 2014, 08:56:57 pm
content: Wow. Just watched this one and was really impressed. Your explanations and definitions are very well thought out and presented in a logical order. It reminded of times in school when a great professor would walk us through something that everyone "knew" was complex and difficult and by the end of the class everyone had forgotten how hard it was supposed to be! I will subscribe and watch the others in order. Thanks!...and although English is not your first language, your speech is well paced and pleasant. Thank you for that.

author: Post_Apocalyptic_Inventor
author_rank: Contributor
timestamp: July 05, 2014, 04:15:55 pm
content: Thank you. Doing these videos in English is always a challenge for me. There are at least a couple of words in every video that do not have a direct equivalent in my mother tongue (German). This is also true in vice versa. Often I want to express something and no direct English equivalent can be found in neither printed, nor digital dictionaries. This is especially true in the field of SMPS. But I always do my research and think about it until I find an expression that seems to be the logical choice. For me it's always a good oportunity to train my English skills

author: jaxbird
author_rank: Frequent Contributor
timestamp: July 05, 2014, 05:38:49 pm
content: Very high qualitygreat work.Enjoyed watching the first of them. You should try contact some schools/high schools/colleges or your German equivalent. (Have to admit I thought you were Norwegian from your accent before I saw the flag on your profile, so much for the typical German English accent stereotype)I can imagine these would be a nice series to use in classes and make some teachers really happy

author: eneuro
author_rank: Super Contributor
timestamp: July 06, 2014, 08:56:49 pm
content: Quote from: MJR on July 04, 2014, 08:56:57 pmMaybe are you talking about this Great MIT Professor?It is amazing those days one can follow his MIT OpenCourseWare

author: miguelvp
author_rank: Super Contributor
timestamp: July 06, 2014, 09:28:28 pm
content: I took that class on edx.org as a requirement for an EE class, It's amazing what you can learn online now a days

author: Post_Apocalyptic_Inventor
author_rank: Contributor
timestamp: July 06, 2014, 11:36:45 pm
content: That's Walter Lewin ! The guy is the greatest !

author: motocoder
author_rank: Unknown
timestamp: July 07, 2014, 02:38:57 pm
content: These videos are great. Thank you for producing them.

author: bookaboo
author_rank: Frequent Contributor
timestamp: July 07, 2014, 03:45:00 pm
content: First time I've seen your videos, I've subscribed and plan to watch many more. Excellent stuff

author: andyturk
author_rank: Frequent Contributor
timestamp: July 07, 2014, 04:10:52 pm
content: Quote from: Post_Apocalyptic_Inventor on July 05, 2014, 04:15:55 pmEven though it's your second language, the English you're speaking is very clear and easy to understand. Your voice is a little more slow and measured than it might be in a face-to-face conversation, but that works really well for presenting difficult concepts. Personally, I love the "accent" too.I only watched the one, but I'm subscribed and looking forward to watching the other videos in the series.

author: eneuro
author_rank: Super Contributor
timestamp: July 07, 2014, 09:07:28 pm
content: Do not forget about magnetic amplifier (magamp) and magnetic switch circuitsReally cool staffwiki: Magnetic amplifierand had military applications in fighter aircraftsOn magnetic amplifers in aitcraft applicationThis is what I'm interested in now in tree-phase application projectModeling of a three-phase application of a magnetic amplifierIt will be fun test such magnetic amplifier & switch circuits

author: Post_Apocalyptic_Inventor
author_rank: Contributor
timestamp: July 08, 2014, 09:10:03 am
content: I'm not sure if I will have the time to deal with magnetic amplifiers any time soon. But since I'm dealing with the basics of inductive components in this video as well as in the next one, the series will at least deliver the basic concepts that magnetic amplifiers are based on. I will for example talk about the magnetization curve and about magnetic saturation in part 6.

author: sfiber
author_rank: Regular Contributor
timestamp: July 08, 2014, 11:19:56 am
content: ohh man.I discover your channel now and I do like it

author: switcher
author_rank: Regular Contributor
timestamp: July 09, 2014, 11:32:18 pm
content: Quote from: Post_Apocalyptic_Inventor on June 29, 2014, 11:09:57 amThere are three Horizon episodes that are a must see for anyone on here, they are:-'Now The Chips Are Down''Microworld''Better Mind The Computer'

author: Yago
author_rank: Frequent Contributor
timestamp: July 10, 2014, 10:25:06 pm
content: Great vids, watching them now.Can only repeat what is said about the quality, great old BBC feel, it's like the OU never went awayThanks

author: Post_Apocalyptic_Inventor
author_rank: Contributor
timestamp: July 11, 2014, 02:13:15 pm
content: Thanks a lot for those compliments. I'm really feeling flattered right now.By the way: I'm watching those old Horizon episodes (you posted) as we speak

author: motocoder
author_rank: Unknown
timestamp: July 20, 2014, 01:32:57 am
content: I think yours were the first electronics videos where I watched all of them in sequence, with no breaks. Looking forward to the next video.

author: metacollin
author_rank: Contributor
timestamp: July 21, 2014, 12:49:53 pm
content: These are great. I wish someone had made videos like these when I was trying to build this stuff. I don't know how it is now, but there was a near total lack of resources on any topology beyond the basic single inductor topologies, and maybe a little bit on flybacks, but not enough. I had make the ultimate sacrifice and actually buy some books and do it the hard way. Expensive books, the kind that will force a starving student who can afford to not only eat ramen into only eating ramen, or if they are already only eating ramen, into food insecurity. I jest (...kind of), but I've always been an autodiadact, and it's extremely frustrating when sheer lack of material, rather than the content of it, is the primary obstacle. I was studying something totally unrelated to electronics in school, so if it wasn't on the web....Let's just say I ate a lot of ramen. The sheer quantity of delicious non-ramen earthly delights I could have been eating if these videos had been available back then.Anyway, bravo. It's great you are doing a very low level, complete discussion of this stuff, you really really need that strong understanding of the theory and math and integrals needed to analyze stuff (like volt time and amp time) when it comes to switchers. And even that isn't all of it, there is all that crazy mosfet shit like phantom turn on and the miller and reverse transfer capacitance, all that stuff when you get into wider voltage differentials or need to optimize efficiency. There's an idea for future part in the series. Unless you already covered that, sorry I haven't watched the earlier videos yet. I had to come here to post how awesome the first one was first.But anyway, great great stuff! Everyone who is doing switchers but doesn't like theory, nut up and learn it, you need it, and these videos make theory interesting and relatively painless.