I followed the same instructions but it takes a lot time to run with just one LM741. Please help?

 

I have a Mac and I've just installed LTspice.

For those interested, in order to add the files that @crutschow shared you need to go to the following folder:

/Users/YOURUSER/Library/Application Support/LTspice/lib.

Then do what is described on post #2.

Quit (CMD + Q) LTspice and open it again and voilá!

 

For LTspice IV:
Put the .lib file in C:\Program Files (x86)\LTC\LTspiceIV\lib\sub.
Put the .asy file in C:\Program Files (x86)\LTC\LTspiceIV\lib\sym\Opamps

How to do it for LTSpice installed on MAC?

 

For LTspice IV:
Put the .lib file in C:\Program Files (x86)\LTC\LTspiceIV\lib\sub.
Put the .asy file in C:\Program Files (x86)\LTC\LTspiceIV\lib\sym\Opamps

is there a difference between LM741 vs UA741 op-amps?

 

Why are you using a 741 opamp? Its design is 52 years old and its spec's are very bad compared to modern opamps.
Your schematic shows that its input is at the same DC voltage as its negative supply (0V) which will not work. The input must be at least 3V more positive than its negative supply. Add a negative supply.

 

I followed the same instructions but it takes a lot time to run with just one LM741. Please help?

I Have the same problem as this member. Can I do something to swift the simulation?

 

I Have the same problem as this member. Can I do something to swift the simulation?

Depending of the simulation, try, if you can, to simulate shorter periods, save data for shorter periods, use not so many steps for parameters always if you can go away with less. Most of simulations that I know, as frequencies are higher, the simulation seems to take longer.

 

The lousy old 741 opamp should be buried.

 

LM741. Please help?

Don't use it. I have never used or specified a 741 in any design I've been associated with.
It is an example to teach students all the horrifying characteristics to be concerned about.

 

just i had finished the homework the teacher annouced that your project wouldnt be counted if you dont use OP741.
Thanks it helped me alot.

 

I Have the same problem as this member. Can I do something to swift the simulation?

Did you specify a Maximum Timestep in the transient simulation command (below)?
Leave it unspecified for fastest simulation time.

 

I have never used or specified a 741 in any design I've been associated with.

I have, but I likely go back much further than you, when the 741 was the latest and greatest (the first IC op amp with internal compensation).

It is an example to teach students all the horrifying characteristics to be concerned about.

That, and their cheap availability are probably the only good reasons to use one.

 

For LTspice IV:
Put the .lib file in C:\Program Files (x86)\LTC\LTspiceIV\lib\sub.
Put the .asy file in C:\Program Files (x86)\LTC\LTspiceIV\lib\sym\Opamps

Thank you for sharing! This is for our college experiment online

 

It is probably already there, but you just can'y see it.
Look in the Educational folder that comes with the standard download
The file is LM741.asc You can automatically create a symbol for it and away you go

 

For LTspice IV:
Put the .lib file in C:\Program Files (x86)\LTC\LTspiceIV\lib\sub.
Put the .asy file in C:\Program Files (x86)\LTC\LTspiceIV\lib\sym\Opamps

How to have OPAMP741 with NULL ADJUSTMENT PINS, which means, a total of 6 pins on OPAMP741

 

I have a Mac and I've just installed LTspice.

For those interested, in order to add the files that @crutschow shared you need to go to the following folder:

/Users/YOURUSER/Library/Application Support/LTspice/lib.

Then do what is described on post #2.

Quit (CMD + Q) LTspice and open it again and voilá!

Thank You so much bro, was trying the same for 2 days