MicrosiM ,
sorry , i forgot to ask one question...
what is the good value for transformer's temperature ? is it good to have 36.5ºC after 5 minutes with 60w load ?
a few minutes later , i'm going to test smps with 200w bulb. position of sensor was attached.
Regards
Thats almost OK
Now when make sure that your SMPS is stable, like loading it with 500W for a few minutes WHILE monitoring waves + heat for all.
You have to show me waves:-
1- Across primary of your ETD49, LOADED, and NOT Loaded
2- Across series CAPACITOR while SMPS is LOADED 600 ~ 800 W
You may change your heat sink to a bigger one at this stage, I advice you to put another piece of heat sink on TOP of the Mosfets, Sandwich them!,
Dont be Afraid, SMPS will heat... and if your setup is OK hitting the 60 ~75C of Mosfets Heat Sink will be fine!
Watch tempretures, and make sure that you stay away at the testing stages.. If things are fine, then you are safe!
Good luck!