I have a big problem with pspice software. I don't know how to modify 2 pins
of op amp 741(pin 5 & 1). I have to use them in my circuits but they are
unmodeled pins. please help me

 

The PSpice symbol for the 741 type opamp contains two pins (1 & 5) which are NOT necessary. Leave these pins unconnected. (The symbol is used also for other opamps which need these pins).

 

The PSpice symbol for the 741 type opamp contains two pins (1 & 5) which are NOT necessary. Leave these pins unconnected. (The symbol is used also for other opamps which need these pins).

I can't do it. As I said before I should simulate a circuit that these pins
have to be connected to the rest of the circuit. In fact these connections affect simulation result so I can't leave them unconnected.

 

I can't do it. As I said before I should simulate a circuit that these pins
have to be connected to the rest of the circuit. In fact these connections affect simulation result so I can't leave them unconnected.

I really don`t understand. The real unit (hardware) has two pins for power supply, a differential input (two pins) and one ouput pin.
What shall be the purpose of connecting the additional pins of the symbol to "the rest of the circuit"? WHY?

 

thanks for your help. I need a transistor array which has 4 taransistors 2 NPN and 2 PNP for my design circuit .I can't find this kind of thing in Pspice libraries. I would be grateful if YOu tell me how I can find it

 

thanks for your help. I need a transistor array which has 4 taransistors 2 NPN and 2 PNP for my design circuit .I can't find this kind of thing in Pspice libraries. I would be grateful if YOu tell me how I can find it

Why not just use separate transistors? The simulation results will be the same.