It's hard to find valid and working LTSpice model for the LM337 negative regulator.

Does anyone know one that works altight?

 

Here's the model and symbol files for one that seems to work for me:
Let me know if it does for you.

Below is a sim of it showing the variation in output volage versus the R1 adjustment resistor value:

 

Here's the model and symbol files for one that seems to work for me:
Let me know if it does for you.

Below is a sim of it showing the variation in output volage versus the R1 adjustment resistor value:

View attachment 333792

Thanks. may I know the source, if that's okay?

 

Thanks. may I know the source, if that's okay?

Don't remember exactly.
Pulled it from a source after a google search for an LM337 spice file.

 

hi j25,
I have used the model a number of times, works OK.
E

 

ltspice yahoo groups years ago simulated and tested an LM337 .subckt, it was considered fair.
it is the other parameters that can be set that account for the less than perfect simulation.
It was archived in repo misc git hub, it works alright, however an interactive bench and simulation is much better.
Some just prefer a component symbol, being inclined toward visual icon and pins in schematic capture.