Timeline for SMPS (LM2678) what transformer to use and why?
Current License: CC BY-SA 3.0
10 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Oct 19, 2017 at 5:21 | vote | accept | Xane | ||
| Oct 19, 2017 at 5:20 | comment | added | Xane | Awesome! Thank you very much. I will check that out! :D | |
| Oct 17, 2017 at 13:19 | comment | added | Bimpelrekkie | It might be educational to have a look at BIgClive on Youtube taking some of these SMSPs apart and discussing how they work: youtube.com/watch?v=YiPG9SSI8xY&t=2s That's just an example, also look at his other videos. Main theme of that channel: take apart, see what's inside and learn from that ;-) | |
| Oct 17, 2017 at 13:13 | comment | added | Bimpelrekkie | Yep, it's a flyback converter, if you Google "flyback converter circuit" and then search for images (instead of websites) you will see plenty of circuits. They're basically all the same: High voltage AC in => Bridge rectifier + smoothing capacitor => 200 - 400 V DC => Transformer + switching transistor => output uf transformer => rectifier + smoothing capacitor. Some also have an optocoupler for voltage feedback. | |
| Oct 17, 2017 at 13:09 | comment | added | Xane | Sorry for double comment. But Do you happen to know the name of such a SMPS in the second picture? Or maybe even a schematic for it? Thanks. | |
| Oct 17, 2017 at 13:02 | comment | added | Xane | "You are confusing a mains powered SMPS with a Buck converter." That explained it for me haha, thank you for the detailed answer + pics!! | |
| Oct 17, 2017 at 13:00 | vote | accept | Xane | ||
| Oct 17, 2017 at 13:01 | |||||
| Oct 17, 2017 at 10:19 | comment | added | Bimpelrekkie | @Trevor Probably it does ;-) Maybe it says so in writing but I cannot read Chinese. | |
| Oct 17, 2017 at 10:18 | comment | added | Trevor_G | Does the first one come with a fortune cookie ? | |
| Oct 17, 2017 at 10:13 | history | answered | Bimpelrekkie | CC BY-SA 3.0 |