|00:01||Welcome to the spoken tutorial on Uploading a Spice Device Model in eSim.|
|00:08||In this tutorial, using eSim we will learn -
To create a Schottky Diode using the Upload option.
|00:17|| To record this tutorial, we will use-
Ubuntu Linux OS version 16.04
eSim version 2.0
|00:28||To practice this tutorial, you should know to
create a circuit schematic and
simulate the netlist file in eSim.
|00:39||If not, watch the prerequisite eSim tutorials on this website.|
|00:45||The device model file begins with a dot model statement.|
|00:50||mname indicates the model name like diode model 1N4007, 1N534A.
Component type indicates the type of model used.
|01:05||Example: D is used for Diode,M for MOSFET,and
NPN or PNP for BJT.
|01:15||pname is the parameter name and pval is the parameter value.|
|01:22||The model library files added using the Upload option will be saved in the User Libraries folder under device Model Library directory.|
|01:35||The model library files are used with the components present in eSim underscore Devices.|
|01:44||You can also refer to the spice models available in the Ngspice manual.|
|01:51||To launch eSim, you need to double-click on the eSim icon on your Desktop.|
|01:58||I have already opened eSim. Pause the video here.|
|02:02||Download the Schottky diode 1N5711 library file from the Code file section available on this page.|
|02:13||Save it on your Desktop with dot lib extension.|
|02:19||On the eSim window, click on the Model Editor button from the left toolbar.|
|02:26||In the previous tutorial, we have seen how to add a Device model using the New option.|
|02:35||Now, we will add a Device model library using the Upload option.|
|02:42||On the Model Editor tab, click on the Upload button.|
|02:47||I have already downloaded the Schottky diode IN5711 model and saved it on my Desktop.|
|02:57||Click on the Desktop. Click on the Schottky dot lib file.|
|03:04||Click on the Open button.|
|03:07||A pop-up window Model Name will appear.|
|03:11||In the Enter Model Library Name, type new model name as Schottky. Click on the OK button.|
|03:21||The device model Schottky and its xml file will be saved under the User libraries folder.|
|03:30||Let us simulate the characteristics of Schottky diode.|
|03:35||We will open the example Diode Characteristics from the eSim Examples folder.|
|03:43||On the eSim window, click on the Open Project option from the top menu.|
|03:50||Locate the directory where the eSim is installed.|
|03:55||Click on the Examples folder.|
|03:59||Scroll down and select the Diode underscore characteristics.|
|04:04||Click on the Open button. The Diode characteristics example is added to the eSim window under Projects.|
|04:14||To see the schematic, select Diode characteristics.|
|04:19||Click on the Open Schematic button from the left toolbar. It directs us to the schematic editor.|
|04:28||Press F1 key to zoom in the schematic.|
|04:33||Let us go back to the eSim window.|
|04:37||On the eSim window,select the Diode underscore characteristics.|
|04:43||Click on the Convert Kicad to Ngspice button from the left toolbar.|
|04:49||In the Analysis tab, select DC.|
|04:53||Scroll down to enter values.
Enter Source 1 as V1.
|05:01||Enter Start as 0.
Enter Increment as 0.1.
Enter Stop as 0.4.
|05:12||In the Source Details tab, enter the value as 1.|
|05:17||Skip the Ngspice Model tab.|
|05:20||Click on the Device Modeling tab.|
|05:24||Click on the ADD button. Double-click on the User Libraries folder.|
|05:31||Click on Schottky dot lib file and click on the Open button.|
|05:37||On the Kicad to Ngspice tab, click on the Convert button.|
|05:43||Click on the OK button in the Information dialog box.|
|05:48||Now, let us generate the plots.|
|05:51||On the eSim window, click on the Simulation button from the left toolbar.|
|05:58||The diode has a knee voltage or turn-on voltage of around 0.2.|
|06:05||The forward current is 95 microampere.|
|06:10||These diodes are used in power rectification applications. Close the Ngspice terminals and plots.|
|06:20||In the Python plot window, check the In and Out nodes.|
|06:25||Then click on the Plot button.|
|06:29||You can see the input and output plot. Close the Python plot.|
|06:36||Let us now summarise.|
|06:39||In this tutorial, we learnt to create
Schottky Diode using Upload option.
|06:47||Do you have questions in this Spoken Tutorial?|
|06:51||Choose the minute and second where you have the question.|
|06:55||Explain your question briefly.|
|06:59||Someone from the FOSSEE team will answer them. Please visit this site.|
|07:07||For any general or technical questions on eSim, visit the FOSSEE forum and post your question.|
|07:15||The FOSSEE team coordinates the Circuit Simulation project.|
|07:20||We give Certificates and Honorarium to the contributors. For more details, please visit this site.|
|07:29||The FOSSEE team coordinates the Lab Migration project. For more details, please visit this site.|
|07:38||Spoken Tutorial Project is funded by NMEICT, MHRD, Govt. of India. For more details, visit this site.|
|07:50||This is Gloria N from IIT Bombay signing off. Thank you|