220V AC to 12V and 5V DC Power Supply Circuit Schematic and Transformer Reference

Hy electronic experts

I wana build a circuit that that needs both 12 V DC and 5 V DC, to feed that main circuit I need to build a sub circuit that does the transformation. So I need a electronic transformer component reference that does transform from 220 V AC to 12 DC. And if you have any idea about a schematic that outputs 12 V DC and 5 V DC from 220 V AC any idea any things that I should avoid or take care any remarks it is also welcome

Thank you
Bechir

Hi Bechir,

You should use a transformer, a bridge rectifier and two voltage regulators, one 7812 and one 7805. If the current demand is

What I exactly need is a reference of any electronic transformer like that can transform from 220 v to 12 v I suppose that they are a lot references of electronic transformers with datasheets. So I need a reference to a correspondent electronic transformer so that I can get its datasheet and start to build the sub circuit

Thank you Calinoaia

How much current You need on 5 and 12V ...

Well I need to drive a stepper motor such as NEMA 23

http://sine.ni.com/nips/cds/print/p/lang/en/nid/203937

Let's say 0.4 A according to the specification. For instance I'm using a AC source with 50 Hertz as frequency if this info is important Of Corse

Thank you mark