1. Place an appropriate source to proceed with transient analysis. Several are in the library tech_ngspice. For the rest: in the side-bar select Component tab, then schematic technology, and click an entry on the Spice component-menu (this is an electric built-in library named spicepartsS3), then click to place it in the schematic. Double-cilck the instance to edit properties.
![TA1.png](https://landen.imgix.net/blog_ickgzqLarmCcosjk/assets/OoOYEObMHSulnlKA.png)
2. Make sure frequency, voltage, etc. parameters have proper values
![TA2.png](https://landen.imgix.net/blog_ickgzqLarmCcosjk/assets/MOpTuWUlXONZhzDA.png)
3.Transient analysis component is present in the tech_ngspice library as dotTRAN.ic. Drag it from side-bar’s Explorer to place in the schematic.
![TA3.png](https://landen.imgix.net/blog_ickgzqLarmCcosjk/assets/baRdYkuxRhLJXBwF.png)
4. Double-cilck the instance and fill in the timing parameters.
![TA4.png](https://landen.imgix.net/blog_ickgzqLarmCcosjk/assets/noeNfEJeKeOtQFWd.png)
5. In the toolbar click the SIM button to write ngspice netlist and run the simulation. Launch symprobe on the output rawfile via toolbar wave button.
![TA5.png](https://landen.imgix.net/blog_ickgzqLarmCcosjk/assets/OyLrWiqGXYQcfAlX.png)