Hi, I'm trying to run a simulation for a half-wave rectifier, because when I had tested it a few days ago, I was getting a DC voltage of 11V from a 4.3V input. This is quite strange because theoretically Vout = -Vin, so I'm trying to figure out why my circuit is mysteriously amplifying my Vin.

Unfortunately when I try to run the simulation I'm getting the errors 'Attribute Part D has no "MODEL" attribute'. Here is my Pspice schematic for my half-wave rectifier - View attachment Rectifier.cir.sch.

I'm guessing I'm suppose to double click the diodes in my schematic and edit the attributes but how do I set them up as 1N4004, which are the diodes I'm using in my circuit?

 

What program exactly are you using?

Anyway, it means you didn't assign a model to the diode.
You're trying to use the default, 'D'.

You could try putting in '1N4004' instead of D but that will only work if you happen to have that model. Usually you get the 1N4148 by default so you could try that.

 

I'm using PSpice Schematics. I tried changing the default 'PART=D' to 'PART=1N4004' but didn't work, error message says "This attribute is not changeable from the schematic editor." Also got the same error message from PART=1N4148.

 

Try this circuit

 

I am able to open that file and see the schematic, but when I try to simulate it I get the error message "Cannot open file: Aktywny prostownik2.stl".

 

Ok, I got the same error, try this files

 

Both files simulates without error now. Thank you very much for making that recitfier.cir.sch work now. May I ask how you were able to set the opamp as LM324? As I would like to try changing it to LM741.

Edit: I'm using PSpice Schematics version 9.1, part of PSpice Student. And I've downloaded the LM741.MOD file, but not sure how I add it to the Get New Part library.

Actually, does anyone know if PSpice Schematics' 'opamp' part is usable as LM741? Because I noticed that even when I replaced the LM324 model in Jony130's Rectifier.cir.sch file, it still gives the same simulation.

 

Well in this type of circuit the "type" of a opamp you use is really does not matter. The result will be the same.