Hi!
1, The topology i am using is flyback.
2, Question:- Is there any kind of limit like if core size is ABC then it can give this much power and if its size is DEF then it can give this much power...
3, Does operating frequency also changes maximum power transfer limit.
4, I have plan to use 89c2051 for controlling but initially i am playing with simple transistor oscillator. I want to use 89C2051 because i want to show the output voltage on seven seg. display and also want to control the supply by serial com. i think this MCU is capable of doing this.

Thanks!