ESim/C2/Device-Model-creation-and-Simulation/English

Device Model Creation and Simulation using eSim

Author: Gaurav Supal

Keywords: video tutorial, eSim, Device Model, Parameters, EDA, Simulation, analysis, uploading model

Visual cue	Narration
Show Slide: Opening Slide	Welcome to the spoken tutorial on “Device Model Creation and Simulation using eSim”
Show Slide: Learning Objectives	In this tutorial, using eSim we will learn how to- create device model add or remove parameters of device model save the device model upload the external device model
Show Slide: Systems Requirements	To record this tutorial, we will use- Ubuntu Linux 16.04 eSim version 1.1.2.
Show Slide: Pre-requisites	To practice this tutorial, basic knowledge of analog and digital electronics is required.
System Computer: Desktop icon	To launch eSim, double-click on the eSim icon on your desktop.
System Computer: eSim startup window	The eSim window opens up.
eSim Main Window: Creating device model library	Now let us create a device model library for a Diode.
eSim Main Window: Click on >> Model Editor button	Click on the Model Editor button on the left toolbar.
Model Editor Window: Click >> New and Enter Model Name >> Diode_test	Click on New and type the Model name as Diode underscore test. Click on OK.
Model Editor Window: Select >> Diode category	Now select Diode category.
	The Basic parameters of a Diode is displayed. We will keep the same for our diode model and edit it later.
Model Editor Window: Click >> Save and Close>> model editor window	Click on the Save button at the top of the model editor window. Now close the model editor window.
	Let us run our Diode model using an example.
eSim Main Window: Open >> Diode_Characteristics	Open the Diode_characteristic example from the Examples folder. Please note: Examples folder is located in eSim hyphen 1.1.2 folder which you have downloaded while installing.
Double Click >> Diode_characteristic in projects	From Projects, double-click on the Diode_characteristics example.
eSim Main Window: Click on>> Open Schematic	Open the schematic and view the circuit Now minimize the schematic window.
eSim Main Window: Click on >> Convert Kicad to Ngspice	Click on Convert Kicad to Ngspice button on the left toolbar.
Click >>Analysis tab Click >> Source Details tab.	Don’t change the previous values in the Analysis and the Source Details tab.
Kicad to Ngspice window: Click >> Device Modeling tab and Click >> Add	Next, click on Device Modeling tab and then click on Add button at the right of the text box.
Device Modelling tab: Select >> Diode folder >> Diode_test	Select the Diode underscore test from the Diode folder.
Click on >> Convert and click >> OK	Now click on Convert button at the bottom of the window. Click on OK in the confirmation dialog box.
Kicad to Ngspice window: Close >> Kicad to Ngspice window	After this, close the Kicad to Ngspice window.
eSim Main Window: Click on >> Simulation Button	click on Simulation button on the left toolbar and check the output.
	Let us now edit our device model to re-check the output.
eSim Main Window: Click on >> Model Editor button	Click Model Editor button on the left toolbar.
Model Editor Window: Click Edit >> Diode >> Diode_test	Click on Edit button at the top of the model editor window. Then select Diode underscore test from the Diode folder.
Model Editor Window: point to >> Add/Remove button	We can add and remove parameters in the model. To do so, click on ADD to add a parameter and REMOVE to remove a parameter.
Model Editor Window:	Now we will modify the parameters values, to check the effect on the model.
Model Editor Window: Double click >> value of “N” parameter	Double-click on the value of “N” and change the value from 1.679E+00.to 4.679E+00
Type 4.679E+00
Model Editor Window: Click >>Save and Close>> model editor window	Click on Save button at the top of the model editor window. Now close the model editor window.
eSim Main Window: Click on >> Convert Kicad to Ngspice button >> click Device Modelling tab	Now click on Convert Kicad to Ngspice button on the left toolbar. And click on the Device Modelling tab.
Device Modelling tab: Add >> Diode>> Diode_test	Add our modified Diode underscore test from Diode folder in the Device Modeling tab.
Kicad to Ngspice window: Click on >> Convert and click >> OK	Click on Convert button at the bottom of the window. click on OK on the confirmation dialog box.
eSim Main Window: Click on >> Simulation Button	Now, click on Simulation button from the left toolbar and check the modified output.
Ngspice Plot Windows:	Notice the change in the output plot. <<PAUSE>>
	Let us now upload an external model file in eSim.
eSim Main Window: Click on >> Model Editor button	Click on Model Editor button on the left toolbar.
Model Editor Window: Click on >> Upload	Click on Upload button at the top of the model editor window.
Diode >> D.lib Note: We are uploading D.lib from Diode folder for demonstration, user can upload any .lib file from his system.	Go to Diode folder and select D dot lib. Note: We are uploading D dot lib from Diode folder for demonstration. User can upload any dot lib file from his system.
Type D1 >> click OK	A dialog box opens where we will enter the Model name as D1. now click on the OK button in the dialog box.
Model Editor Window: Close >> model editor	Now close the model editor window.
eSim Main Window: Click on >> Convert Kicad to Ngspice button >> click Device Modelling tab	Click on Convert Kicad to Ngspice button on the left toolbar. Now click on the Device Modelling tab.
Device Modelling tab: Add >> User Libraries >> D1	Add our modified D1 from User Libraries folder.
Kicad to Ngspice window: Click on >> Convert and click >> OK	Click on the Convert button at the bottom of the window. Now click on OK in the confirmation dialog box.
eSim Main Window: Click on >> Simulation Button	Lastly, click on the Simulation button from left toolbar and check the modified output.
	<<PAUSE>> Now let us summarize.
Show Slide: Summary	In this tutorial, we learnt how to, create device model add or remove parameters of device model save the device model upload the external device model
Show Slide: Assignment	Here is the assignment for you to solve. Create the Full wave Bridge Rectifier circuit using the D dot lib model file in eSim and simulate it.
Show Slide: Forum	Please post your timed queries in this forum.
Show Slide: FOSSEE Forum	Please post your general queries on eSim in this forum.
Show Slide: Textbook Companion	The FOSSEE team coordinates the TBC project.
Show Slide: Acknowledgment http://spoken-tutorial.org	* Spoken Tutorial Project is funded by NMEICT, MHRD, Govt. of India. For more details, visit this website.
Thank you slide	This is Usha from IIT Bombay signing off. Thank you.

Contributors and Content Editors

Nancyvarkey, PoojaMoolya, Saurabhbansode, Vineeta