Transformerless Power Supply - AC-110v to DC 5v 1A (60hz)

[JuanDH]

Hi Ioannis,

Thanks for the link. I've also searched the entire forum looking at the different posts (invested quite some time there) but the power supply you mention is for 220v not for 110v and as I don't have any experience on the matter I prefer not to "guesstimate" on this kind of designs. I saw a thread where the user Melanie posted, what it looks to me, at least a safe power supply (as much as this ones can be): http://www.picbasic.co.uk/forum/show...?t=3265&page=2

Thanks
Juan

[JuanDH]

I don't think it is isolated and it is expensive, but is everything in one module, it is attractive at least. Experiences?

http://parts.digikey.com/1/parts/188...ac05-05sb.html

Thanks!

[dhouston]

... the power supply you mention is for 220v not for 110v

Did you read the entire thread?

Also, you asked for transformerless and now want isolation. You cannot have both.

[JuanDH]

I did, I'll give it a try and see how it works with 110v

Regarding the isolation I thought that this module could be something "magical"

Thanks

[dhouston]

Regarding the isolation I thought that this module could be something "magical"

If you are referring to the module at Digikey, it's a 'switching' power supply. They are isolated and they have a transformer - there's no magic. Why can't you use an external 5V/1A (or more) SMPS, readily available for $5 or less? I almost always design for them.