Hi All ,

I have turns details required to wind the transformer for flyback converter,but i don't know how exactly i need to wind .
clockwise or anti-clock wise what exactly is that mean please provide any document to know the directions for primary & secondary .

 

The site below describes the design procedure for the transformer in a flyback converter. As far as the direction of the winding goes, in the diagram below there are dots at one end of each winding. The windings should go the same way round the bobbin starting from the end withthe dot.
http://micro.rohm.com/en/techweb/knowledge/acdc/acdc_pwm/acdc_pwm01/1061/

 

Look at the phase between the two coils normal practice is to make the connections in phase like
============
+pri -pri
============
+sec -sec.
============

Picbuster

 

As long as you wind them in the same direction, and note the Start of each winding it doesn't matter.

 

Clockwise and counterclockwise depend on your point of view. I always have difficulty declaring a motor to be turning which way because you can view a motor from either end. The bottom line is, "It doesn't matter." I might say to just declare a point of view and wind all the windings the same, but you can always just connect the windings backwards after the transformer is finished and installed, and it doesn't matter which way you wound them. It only matters how you connect them.