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.