Buna ziua !! Am de făcut un proiect la facultate inLTSPICE ,și mă confrunt cu niste problema in program .ideea este că am de făcut acel circuit din imagine ,unde am notată nodurile și am încercat să scriu programul ,in momentul in care fac analiza in curent alternativ sau in timp , și vrea să aflu potențialul la nodul 15,cate este de ieșire ,îmi dă o linie dreapta ,nu înțeleg de ce ..având în vedere că acolo am led ,nu cred că așa ar trebui ..ledul acela ar trebui declarat că o dioda ?? Nodul 15 nu este legat de vcc da zic că este continu ..acum daca vreau sa declar acel led ,eu am o diodat care este intre 0 și 15 ( de la anod la catod) acel led îl iau tot între aceste noduri ??? Ideea este că nu îmi iese analiza in curent continuu și nici în timp ... Cine știe și mă poate ajuta...va rog mult !!!

 

hi andreeak
Welcome to AAC.
Please post your LTSpice asc file.
E

 

Este postat,am atasat poze

Mod:
It is posted, I have attached pictures

 

@andreeak This is an English-only forum. Please edit your post and provide a translation. Thank you.

 

hi and,
We need your LTS asc file not pictures of the circuit.
E

 

Hi andreeak
Why did you delete my translation to English in your first post?

Moderation

 

Hello!! I have to do a project at the university in LTSPICE, and I am facing some problems in the program, the idea is that I have to make that circuit in the image, where I wrote down the nodes and I tried to write the program, when I do the analysis in alternating current or in time, and I want to find out the potential at node 15, which is the exit, it gives me a straight line, I don't understand why.. Considering that there I have LEDs, I don't think it should be like that.. that LED should be declared that a diode ?? Node 15 is not related to the vcc to say that it is continuous.. Now if I want to declare that LED, I have a diode that is between 0 and 15 (from anode to cathode) I take that LED between these nodes ??? The point is that I don't get the analysis in direct current or in time ... Who knows and can help me... please !!

 

this project at cc

 

hi andreeak,
That file is the cir file, it is not the asc file.
If you have drawn the circuit diagram using LTSpice, look in the folder, find and post the *.asc file, so that I can run the simulation.
E

 

Nu trebuie sa desenez eu schema circuitului .. Trebuie doar sa scriu codul pentru analiza curentului alternativ ... daca ma puteti ajuta sa o scriu . asta e tot... muncim in.cir... asta facem in facultate

 

poti scrie codul doar in curent alternativ...atat

 

Trebuie sa fac analiza in curent alternativ, analiza parametrica si in timp, ca.tran

 

i just need the lines of code

 

LTspice uses the .asc file which contains the Spice lines of code.

English please.

 

Asta este ceea ce am

 

I don't understand, at the output node, i.e. 15, why in the time analysis it gives me a straight line, even if I inserted a led there.... I don't understand that...

 

Asta este ceea ce am

View attachment 335877

You .asc file does not show any components.

 

the teacher didn't tell us anything like that, we only worked in .cir ... can you help me like that??? Thank you!

 

I don't understand, at the output node, i.e. 15, why in the time analysis it gives me a straight line, even if I inserted a led there.... I don't understand that...

Because there is no positive voltage connected to node 15.

 

how knot 15 should be tied, can you show me please...