hi , i have a confusion i am trying different software to do simulation of my circuits but every time i try something is missing i used Eagle , Diptrace, Tina , Express Pcb , Circuit Maker some ics or some parts of my circuit are missing , i need TL494 IC , IR2111 H-Bridge Ic , IRF540 MOSFET , 20kTrimmer for my circuit please tell me which simulator can i use to get my circuit results of the following ics and parts.
I think you are talking about a schematic capture system like Express PCB. If so you may need to "build" some IC's. Check the quick start in Express PCB.