what transformer options are available for 220V step down?
292 6
Daniel Hansen 4 months ago
I have been trying to find a viable transformer that is available for the assembling option. I cannot for the life of me find any transformer that can step down 220V AC or DC to 12 to 6V. Can anyone help me?
Komentáře
andyfierman 4 months ago
I don't know if the Filter options are any better on a pc than on a smartphone but it is impossible to select a transformer from LCSC Power Transformers pages without carefully studying the images to reject any that are obviously ferrite cored and then downloading the datasheet for each one that looks like it might be a mains transformer. Even then the most likely looking ones from VACS are so poorly documented that they do not state input voltage ranges. There is nothing there that has anything like a suitable turns ratio. However, you need to clarify the statement: "...step down 220V AC or DC to 12 to 6..." Do you mean 220V to 12V AND 6V or 220V to 12V OR 6V? I suggest you look elsewhere and be prepared to assemble the transformer onto the PCB yourself: [https://www\.bitsbox\.co\.uk/index\.php?main\_page=advanced\_search\_result&search\_in\_description=1&keyword=Transformer](https://www.bitsbox.co.uk/index.php?main_page=advanced_search_result&search_in_description=1&keyword=Transformer)<br> <br> Or RS Online, Farnell, Newark, Mouser, Digikey, etc.
Odpovědět
andyfierman 4 months ago
@nesnah.daniel, You aldo need to specify secondary current(s) or VA ratings.
Odpovědět
andyfierman 4 months ago
@nesnah.daniel, Had a deeper search: I could not find any mains transformers on the LCSC or JLCPCB sites.
Odpovědět
MikeDB 3 months ago
Stocking 50/60Hz transformers would throw up a lot of legal issues now they are illegal to export to certain countries.  Use a switcher.
Odpovědět
andyfierman 3 months ago
@MikeDB, "... 50/60Hz transformers ... are illegal to export to certain countries." Any chance you could post a link with more information about this?
Odpovědět
MikeDB 3 months ago
There numerous bits about the web.  Australia was one of the first I believe.  Rob Elliot blasted it on his website [https://sound-au.com/articles/external-psu.htm](https://sound-au.com/articles/external-psu.htm) They're not completely banned of course if you need AC - AC, but using them in electronic products is moreorless out there. I think UAE was another early mover in that direction. Rather than an outright ban, the EU and UK are gradually tightening up the requirements on efficiency and harmonic distortion making it harder to comply. <br> <br>
Odpovědět
Pro přidání komentáře se musíte Přihlásit nebo Registrovat
goToTop
你现在访问的是EasyEDA海外版,使用建立访问速度更快的国内版 https://lceda.cn(需要重新注册)
如果需要转移工程请在个人中心 - 工程 - 工程高级设置 - 下载工程,下载后在https://lceda.cn/editor 打开保存即可。
有问题联系QQ 3001956291 不再提醒
svg-battery svg-battery-wifi svg-books svg-more svg-paste svg-pencil svg-plant svg-ruler svg-share svg-user svg-logo-cn svg-double-arrow
We use cookies to offer you a better experience. Detailed information on the use of cookies on this website is provided in our Privacy Policy. By using this site, you consent to the use of our cookies.