How to design iron core transfomer ?

[Robo29]

Hello,
How to design and learn transformer like 12V ~2A ??

 

[Harald Kapp]

Welcome to EP.

You'll find plenty of information by a search of the internet, e.g. this one: http://electronicdesign.com/power/build-your-own-transformer

 

[Robo29]

As transformer power input = power output

220V 500mAmp = 12V 9Amp
34awg primary side and 12awg is this right??

 

[Colin Mitchell]

You start with a core. What is your core?