Actually Alexan_e , i was trying to make a buck converter circuit in the "CIRCUIT MAKER" n i found that when i was giving a square pulse of 5v amplitude to the gate of power mosfet which was "MTY30N50E" , the o/p coming out in millivolts with the supplied input voltage accross the circuit as 220v DC.
So thats the need of whole issue...
---------- Post added at 23:07 ---------- Previous post was at 23:02 ----------
i know that too but my problem occurs on the software n not on hardware but i m little bit confuse. actually, in circuit maker it was not coming exactly as i want with 5v or so but as i increased the gate amplitude of mosfet to 220v , than the o/p voltage exceeds to that..
don't know how this happened??