View source for ESim/C2/Schematic-Creation-and-Simulation/English

'''Schematic Creation and simulation using eSim'''

'''Author: Gaurav Supal'''

<div style="color:#252525;">'''Keywords: video tutorial, eSim, schematic, simulation, EDA, Ngspice, analysis, transient'''</div>


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'''Visual cue'''
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'''Narration'''
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Opening Slide



| style="background-color:#ffffff;border:1pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.159cm;padding-right:0.191cm;" | Welcome to the spoken tutorial on “'''Schematic Creation '''and '''Simulation '''using''' eSim'''”
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Learning Objectives



| style="background-color:#ffffff;border:1pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.159cm;padding-right:0.191cm;" | In this tutorial, using '''eSim,''' we will learn to-
*create '''circuit schematic'''
* generate '''spice netlist'''
* convert spice '''netlist '''to '''ngspice '''format
* simulate the '''netlist'''

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Systems Requirements


| style="background-color:#ffffff;border:1pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.159cm;padding-right:0.191cm;" | To record this tutorial, we will use- 

*'''Ubuntu Linux OS '''16.04
'''eSim '''version 1.1.2.

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Prerequisites
| style="background-color:#ffffff;border:1pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.159cm;padding-right:0.191cm;" | To practice this tutorial, basic knowledge of '''analog and digital electronics''' is required.
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Desktop icon



| style="background-color:#ffffff;border:1pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.159cm;padding-right:0.191cm;" | To launch '''eSim''', double-click on the '''eSim''' icon on your desktop.

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'''Launch eSim through Terminal'''

esim >> press Enter



| style="background-color:#ffffff;border:1pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.159cm;padding-right:0.191cm;" | Alternately, you can also open '''eSim''' from the '''terminal.'''


To do so, press '''Ctrl, Alt '''and '''T''' keys together.


Now, type '''esim''' and press '''Enter.'''
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| style="background-color:#ffffff;border-top:1pt solid #000001;border-bottom:1pt solid #000001;border-left:1pt solid #000001;border-right:none;padding-top:0cm;padding-bottom:0cm;padding-left:0.159cm;padding-right:0.191cm;" | '''System Computer:'''

eSim startup window




Click Ok.
| style="background-color:#ffffff;border:1pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.159cm;padding-right:0.191cm;" | '''eSim '''window opens up.


Note that the '''project files''' created, will be saved in the''' eSim-Workspace''' directory, by default.


Press “'''Ok'''” in the dialog box.
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| style="background-color:#ffffff;border:1pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.159cm;padding-right:0.191cm;" | Let us now create an '''RC circuit schematic '''and simulate it.
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Creating New Project


Type '''RC >> '''click on '''OK'''.
| style="background-color:#ffffff;border:1pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.159cm;padding-right:0.191cm;" | Click on the '''New Project button''', to create a new project.


In the “'''Enter Project name'''” field, type '''RC '''and click on '''OK'''.
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| style="background-color:#ffffff;border:1pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.159cm;padding-right:0.191cm;" | Please note that spaces are not allowed in the Project name.
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Project Explorer >> point to RC >> Double-click >> click Open Schematic
| style="background-color:#ffffff;border:1pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.159cm;padding-right:0.191cm;" | Our new project '''RC''' will appear under '''Projects.'''

Double-click on '''RC '''to select the '''project'''.

To create the '''circuit schematic''', click''' Open Schematic''' button on the left toolbar.
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| style="background-color:#ffffff;border-top:1pt solid #000001;border-bottom:1pt solid #000001;border-left:1pt solid #000001;border-right:none;padding-top:0cm;padding-bottom:0cm;padding-left:0.159cm;padding-right:0.191cm;" | '''eSim schematic window:'''

Click Ok.
| style="background-color:#ffffff;border:1pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.159cm;padding-right:0.191cm;" | Click on '''Yes''' in the confirmation dialog box.


Ignore the '''eeschema error''' by clicking '''OK'''.


The '''Schematic editor '''window opens up.
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Click on '''Place component '''tool >> click anywhere 
| style="background-color:#ffffff;border:1pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.159cm;padding-right:0.191cm;" | Let us now add '''components''' to the '''schematic'''.


Click on '''Place component '''tool from the right toolbar.


Now click anywhere on the '''editor'''.
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Adding Resistor



| style="background-color:#ffffff;border:1pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.159cm;padding-right:0.191cm;" | Type '''eSim_Devices''' in the '''Filter''' field.


Then select '''R''' and click on '''OK'''. 

Now click anywhere on the '''editor'''.
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| style="background-color:#ffffff;border:1pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.159cm;padding-right:0.191cm;" | Place the '''resistor R '''on the '''editor, '''by clicking on the '''editor '''once.
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| style="background-color:#ffffff;border:1pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.159cm;padding-right:0.191cm;" | Zoom in by pressing '''F1.'''


You can also do so, by scrolling the scroll button of your mouse.
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Adding Capacitor


'''Filter''' field >> Type '''eSim_Devices''' >> select C >> click Ok
| style="background-color:#ffffff;border:1pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.159cm;padding-right:0.191cm;" | Click on the '''editor '''once again.


Type again '''eSim_Devices''' in the '''Filter''' field. 


Then select '''C''' and click on '''OK'''.
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| style="background-color:#ffffff;border-top:1pt solid #000001;border-bottom:1pt solid #000001;border-left:1pt solid #000001;border-right:none;padding-top:0cm;padding-bottom:0cm;padding-left:0.159cm;padding-right:0.191cm;" | Place capacitor on the editor
| style="background-color:#ffffff;border:1pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.159cm;padding-right:0.191cm;" | Place the '''capacitor C '''on the '''editor '''as done before.
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Adding Sine Source




'''Filter''' field >> Type '''eSim_ Sources''' >> select sine >> click Ok
| style="background-color:#ffffff;border:1pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.159cm;padding-right:0.191cm;" | Click again on the '''editor'''.


Type '''eSim_Sources''' in the '''Filter''' field.

Select '''sine''' and click on '''OK'''.
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| style="background-color:#ffffff;border-top:1pt solid #000001;border-bottom:1pt solid #000001;border-left:1pt solid #000001;border-right:none;padding-top:0cm;padding-bottom:0cm;padding-left:0.159cm;padding-right:0.191cm;" | Place sine on the editor
| style="background-color:#ffffff;border:1pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.159cm;padding-right:0.191cm;" | Place the '''sine '''on the '''editor '''as done before.
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| style="background-color:#ffffff;border-top:1pt solid #000001;border-bottom:1pt solid #000001;border-left:1pt solid #000001;border-right:none;padding-top:0cm;padding-bottom:0cm;padding-left:0.159cm;padding-right:0.191cm;" | '''Filter'''field >> Type '''gnd'''>> select gnd >> click OK >> place on editor
| style="background-color:#ffffff;border:1pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.159cm;padding-right:0.191cm;" | Similarly, type '''gnd '''and place a '''ground terminal '''on '''editor'''.
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Adding Plots


<span style="color:#000000;">'''Filter'''</span><span style="color:#000000;"> field >> Type </span><span style="color:#000000;">'''eSim_Plot'''</span><span style="color:#000000;"> >> select plot_v1 >> click OK >> place on editor</span>
| style="background-color:#ffffff;border:1pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.159cm;padding-right:0.191cm;" | Similarly, type '''eSim_Plot, '''select the''' plot_v1 '''and place it on the '''editor.'''
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| style="background-color:#ffffff;border-top:1pt solid #000001;border-bottom:1pt solid #000001;border-left:1pt solid #000001;border-right:none;padding-top:0cm;padding-bottom:0cm;padding-left:0.159cm;padding-right:0.191cm;" | <span style="color:#000000;">Copy </span><span style="color:#000000;">'''plot_v1'''</span><span style="color:#000000;"> >> place on editor</span>
| style="background-color:#ffffff;border:1pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.159cm;padding-right:0.191cm;" | We need one more plot for output.


Place the cursor on '''plot_v1''', right click and select '''copy component'''.


Now place it on the editor.
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| style="background-color:#ffffff;border:1pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.159cm;padding-right:0.191cm;" | This is the '''plot component '''used to plot '''voltages '''at the required '''nodes.'''
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Adding Labels



| style="background-color:#ffffff;border:1pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.159cm;padding-right:0.191cm;" | Let us now add '''labels''' to the '''schematic'''.


The '''labels''' are used to name the required '''nodes '''in the circuit.


This will help us understand the '''netlist''' and connection of our circuit. 
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| style="background-color:#ffffff;border-top:1pt solid #000001;border-bottom:1pt solid #000001;border-left:1pt solid #000001;border-right:none;padding-top:0cm;padding-bottom:0cm;padding-left:0.159cm;padding-right:0.191cm;" | Click on '''Place global label '''tool >> click anywhere >> Type '''IN '''>> click on''' OK'''
| style="background-color:#ffffff;border:1pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.159cm;padding-right:0.191cm;" | Click on '''Place global label '''tool from the right toolbar.


Now click anywhere on the '''editor.'''


Type '''IN '''in text field and click on '''OK.'''
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| style="background-color:#ffffff;border-top:1pt solid #000001;border-bottom:1pt solid #000001;border-left:1pt solid #000001;border-right:none;padding-top:0cm;padding-bottom:0cm;padding-left:0.159cm;padding-right:0.191cm;" | Click on '''Place global label '''tool >> click anywhere >> Type '''OUT '''>> click on''' OK'''
| style="background-color:#ffffff;border:1pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.159cm;padding-right:0.191cm;" | Similarly, place one more label '''OUT '''in editor.
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| style="background-color:#ffffff;border-top:1pt solid #000001;border-bottom:1pt solid #000001;border-left:1pt solid #000001;border-right:none;padding-top:0cm;padding-bottom:0cm;padding-left:0.159cm;padding-right:0.191cm;" | 
| style="background-color:#ffffff;border:1pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.159cm;padding-right:0.191cm;" | Let us move and arrange the components to create the '''RC circuit.'''
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Moving the components

Place cursor on '''resistor '''>> press ''''M' '''
| style="background-color:#ffffff;border:1pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.159cm;padding-right:0.191cm;" | To move the '''resistor, '''place the cursor on it and press the key ''''m''''.
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| style="background-color:#ffffff;border-top:1pt solid #000001;border-bottom:1pt solid #000001;border-left:1pt solid #000001;border-right:none;padding-top:0cm;padding-bottom:0cm;padding-left:0.159cm;padding-right:0.191cm;" | Click on editor at preferred location.
| style="background-color:#ffffff;border:1pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.159cm;padding-right:0.191cm;" | Place it at the preferred location, by clicking on '''editor''' again.
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| style="background-color:#ffffff;border-top:1pt solid #000001;border-bottom:1pt solid #000001;border-left:1pt solid #000001;border-right:none;padding-top:0cm;padding-bottom:0cm;padding-left:0.159cm;padding-right:0.191cm;" | '''eSim schematic window:'''

Rotating the components



| style="background-color:#ffffff;border:1pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.159cm;padding-right:0.191cm;" | To rotate the '''resistor, '''place the cursor on it and press the key ''''r'.'''


Similarly, move the '''plot components '''and '''labels, '''as shown.
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Connecting wires to the schematic
| style="background-color:#ffffff;border:1pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.159cm;padding-right:0.191cm;" | Now, let us connect the various components using wires.
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| style="background-color:#ffffff;border-top:1pt solid #000001;border-bottom:1pt solid #000001;border-left:1pt solid #000001;border-right:none;padding-top:0cm;padding-bottom:0cm;padding-left:0.159cm;padding-right:0.191cm;" | '''eSim schematic window:'''

Click on '''Place wire '''button >> click '''sine resource '''and drag between Sine and Resistor >> click on it.
| style="background-color:#ffffff;border:1pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.159cm;padding-right:0.191cm;" | Click on '''Place wire '''button from the right toolbar.


Click on one end of the '''sine source'''.


Move the cursor point to one end of the '''resistor '''and click on it.
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| style="background-color:#ffffff;border-top:1pt solid #000001;border-bottom:1pt solid #000001;border-left:1pt solid #000001;border-right:none;padding-top:0cm;padding-bottom:0cm;padding-left:0.159cm;padding-right:0.191cm;" | 
| style="background-color:#ffffff;border:1pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.159cm;padding-right:0.191cm;" | Similarly, connect all the components as demonstrated here.
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| style="background-color:#ffffff;border:1pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.159cm;padding-right:0.191cm;" | The '''plot''' components are placed at the '''output '''and '''input nodes'''.


This helps us to view the corresponding '''voltage waveforms '''on simulation.
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| style="background-color:#ffffff;border-top:1pt solid #000001;border-bottom:1pt solid #000001;border-left:1pt solid #000001;border-right:none;padding-top:0cm;padding-bottom:0cm;padding-left:0.159cm;padding-right:0.191cm;" | '''eSim schematic window:'''

Annotate the schematic



| style="background-color:#ffffff;border:1pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.159cm;padding-right:0.191cm;" | To '''annotate '''the '''schematic components''', click on '''Annotate '''button from the top toolbar.


Click on '''Annotate '''and then click on '''OK.'''


The '''schematic '''is now '''annotated'''.
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| style="background-color:#ffffff;border-top:1pt solid #000001;border-bottom:1pt solid #000001;border-left:1pt solid #000001;border-right:none;padding-top:0cm;padding-bottom:0cm;padding-left:0.159cm;padding-right:0.191cm;" | '''eSim schematic window:'''

Giving values to components
| style="background-color:#ffffff;border:1pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.159cm;padding-right:0.191cm;" | To assign value to the '''resistor''', right-click on it and choose '''Edit Component.'''


Click on '''Value'''.


Type '''1k '''and click on '''OK'''.
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| style="background-color:#ffffff;border-top:1pt solid #000001;border-bottom:1pt solid #000001;border-left:1pt solid #000001;border-right:none;padding-top:0cm;padding-bottom:0cm;padding-left:0.159cm;padding-right:0.191cm;" | 
| style="background-color:#ffffff;border:1pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.159cm;padding-right:0.191cm;" | Similarly, assign value '''1u''' for '''capacitor.'''
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| style="background-color:#ffffff;border-top:1pt solid #000001;border-bottom:1pt solid #000001;border-left:1pt solid #000001;border-right:none;padding-top:0cm;padding-bottom:0cm;padding-left:0.159cm;padding-right:0.191cm;" | '''eSim schematic window:'''

Perform ERC check

Click on '''Perform electrical rules check '''button >> click on '''Run.'''
| style="background-color:#ffffff;border:1pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.159cm;padding-right:0.191cm;" | Now let us do '''electrical rules check '''for this '''schematic'''.


Click on '''Perform electrical rules check '''button on the top toolbar.


Click on '''Run'''.
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| style="background-color:#ffffff;border-top:1pt solid #000001;border-bottom:1pt solid #000001;border-left:1pt solid #000001;border-right:none;padding-top:0cm;padding-bottom:0cm;padding-left:0.159cm;padding-right:0.191cm;" | Point to the errors.
| style="background-color:#ffffff;border:1pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.159cm;padding-right:0.191cm;" | We can see the errors -
*'''global label not connected'''
* and''' a pin is not driven to components'''

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Close '''ERC'''
| style="background-color:#ffffff;border:1pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.159cm;padding-right:0.191cm;" | Ignore the '''global label not connected '''error, since we have used the '''labels '''for naming the '''nodes '''only.


Close the '''ERC '''window.
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| style="background-color:#ffffff;border-top:1pt solid #000001;border-bottom:1pt solid #000001;border-left:1pt solid #000001;border-right:none;padding-top:0cm;padding-bottom:0cm;padding-left:0.159cm;padding-right:0.191cm;" | '''eSim schematic window:'''

Adding Power Flag
| style="background-color:#ffffff;border:1pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.159cm;padding-right:0.191cm;" | Note that the '''ground terminal pin''' is highlighted by a green arrow in the '''schematic.'''


It means that this '''pin '''is not driven by any power source.


To prevent this, let us place a '''power flag.'''
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| style="background-color:#ffffff;border-top:1pt solid #000001;border-bottom:1pt solid #000001;border-left:1pt solid #000001;border-right:none;padding-top:0cm;padding-bottom:0cm;padding-left:0.159cm;padding-right:0.191cm;" | 

Click on '''Place component '''tool >> Click on '''Schematic editor '''>> Type '''PWR_FLAG '''>> click Ok >> place it on the editor



| style="background-color:#ffffff;border:1pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.159cm;padding-right:0.191cm;" | Click on '''Place component '''tool.


Click on the '''Schematic editor'''.


Type '''PWR underscore FLAG and Click OK''' Place it on the '''schematic editor.'''
|-
| style="background-color:#ffffff;border-top:1pt solid #000001;border-bottom:1pt solid #000001;border-left:1pt solid #000001;border-right:none;padding-top:0cm;padding-bottom:0cm;padding-left:0.159cm;padding-right:0.191cm;" | Select '''wire''' >> connect '''PWR_FLAG''' to '''gnd'''



| style="background-color:#ffffff;border:1pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.159cm;padding-right:0.191cm;" | Connect this '''power flag '''to the '''ground terminal '''using a wire.


This indicates that a power source will be connected here.
|-
| style="background-color:#ffffff;border-top:1pt solid #000001;border-bottom:1pt solid #000001;border-left:1pt solid #000001;border-right:none;padding-top:0cm;padding-bottom:0cm;padding-left:0.159cm;padding-right:0.191cm;" | '''eSim schematic window:'''

Perform ERC check



| style="background-color:#ffffff;border:1pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.159cm;padding-right:0.191cm;" | Now repeat the '''electrical rules check'''.


There will be only '''global label not connected''' errors, which can be '''ignored.'''
|-
| style="background-color:#ffffff;border-top:1pt solid #000001;border-bottom:1pt solid #000001;border-left:1pt solid #000001;border-right:none;padding-top:0cm;padding-bottom:0cm;padding-left:0.159cm;padding-right:0.191cm;" | Click on '''Delete Markers''' >> click on '''Close'''.
| style="background-color:#ffffff;border:1pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.159cm;padding-right:0.191cm;" | Click on '''Delete Markers''' and then click on '''Close.'''
|-
| style="background-color:#ffffff;border-top:1pt solid #000001;border-bottom:1pt solid #000001;border-left:1pt solid #000001;border-right:none;padding-top:0cm;padding-bottom:0cm;padding-left:0.159cm;padding-right:0.191cm;" | '''eSim schematic window:'''

Generating Kicad Netlist



| style="background-color:#ffffff;border:1pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.159cm;padding-right:0.191cm;" | Now let us generate the''' netlist '''of this '''circuit.'''


Click on '''Generate netlist '''button from the top toolbar.
|-
| style="background-color:#ffffff;border-top:1pt solid #000001;border-bottom:1pt solid #000001;border-left:1pt solid #000001;border-right:none;padding-top:0cm;padding-bottom:0cm;padding-left:0.159cm;padding-right:0.191cm;" | Click  '''Generate netlist'''>> '''spice''' tab >> check '''Default'''>> click on Generate.


Click '''Save'''
| style="background-color:#ffffff;border:1pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.159cm;padding-right:0.191cm;" | Click on the '''Spice '''tab.


Check the option '''Default format '''and then click on '''Generate.'''


Click on '''Save.'''
|-
| style="background-color:#ffffff;border-top:1pt solid #000001;border-bottom:1pt solid #000001;border-left:1pt solid #000001;border-right:none;padding-top:0cm;padding-bottom:0cm;padding-left:0.159cm;padding-right:0.191cm;" | '''eSim schematic window:'''
| style="background-color:#ffffff;border:1pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.159cm;padding-right:0.191cm;" | A '''Kicad netlist '''of the '''RC circuit '''has been generated.


Now minimise the '''schematic editor.'''
|-
| style="background-color:#ffffff;border-top:1pt solid #000001;border-bottom:1pt solid #000001;border-left:1pt solid #000001;border-right:none;padding-top:0cm;padding-bottom:0cm;padding-left:0.159cm;padding-right:0.191cm;" | '''eSim Main Window:'''

Click on '''Convert Kicad to Ngspice'''
| style="background-color:#ffffff;border:1pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.159cm;padding-right:0.191cm;" | Now, let us add simulation parameters to this '''netlist.'''


Click on '''Convert Kicad to Ngspice '''from '''eSim '''toolbar.
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| style="background-color:#ffffff;border-top:1pt solid #000001;border-bottom:1pt solid #000001;border-left:1pt solid #000001;border-right:none;padding-top:0cm;padding-bottom:0cm;padding-left:0.159cm;padding-right:0.191cm;" | '''Kicad to Ngspice Converter:'''


Analysis Tab >> Select '''Transient''' 
| style="background-color:#ffffff;border:1pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.159cm;padding-right:0.191cm;" | Let us add '''transient parameters''' in '''Analysis tab.'''


By default, '''Transient''' is selected.


Scroll down to enter values in the '''Transient analysis''' fields.
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| style="background-color:#ffffff;border-top:1pt solid #000001;border-bottom:1pt solid #000001;border-left:1pt solid #000001;border-right:none;padding-top:0cm;padding-bottom:0cm;padding-left:0.159cm;padding-right:0.191cm;" | '''Kicad to Ngspice Converter:'''

Inserting values


<div style="color:#000000;">Start time >> 0ms </div>
| style="background-color:#ffffff;border:1pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.159cm;padding-right:0.191cm;" | Make '''Start Time '''equal to '''0 '''by doing the following:


Type '''0 '''in the start textbox.
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| style="background-color:#ffffff;border-top:1pt solid #000001;border-bottom:1pt solid #000001;border-left:1pt solid #000001;border-right:none;padding-top:0cm;padding-bottom:0cm;padding-left:0.159cm;padding-right:0.191cm;" | 
Step time >> 5ms 

Stop time >> 30ms 
| style="background-color:#ffffff;border:1pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.159cm;padding-right:0.191cm;" | Similarly, make the '''Step time 5 milliseconds'''

and '''Stop time 30 milliseconds.'''
|-
| style="background-color:#ffffff;border-top:1pt solid #000001;border-bottom:1pt solid #000001;border-left:1pt solid #000001;border-right:none;padding-top:0cm;padding-bottom:0cm;padding-left:0.159cm;padding-right:0.191cm;" | '''Kicad to Ngspice Converter:'''

Source Details Tab
| style="background-color:#ffffff;border:1pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.159cm;padding-right:0.191cm;" | Let us add the '''source details'''

To do so, click on '''Source details''' tab.
|-
| style="background-color:#ffffff;border-top:1pt solid #000001;border-bottom:1pt solid #000001;border-left:1pt solid #000001;border-right:none;padding-top:0cm;padding-bottom:0cm;padding-left:0.159cm;padding-right:0.191cm;" | '''Kicad to Ngspice Converter:'''

offset value >> 0

amplitude >> 5

frequency >> 50

delay time >> 0

damping factor >> 0
| style="background-color:#ffffff;border:1pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.159cm;padding-right:0.191cm;" | Enter the '''offset value '''as '''0 '''and press '''Tab.'''


Type '''5 '''for '''amplitude''', '''50 '''for '''frequency '''and''' 0 '''for both '''delay time '''and '''damping factor'''.
|-
| style="background-color:#ffffff;border-top:1pt solid #000001;border-bottom:1pt solid #000001;border-left:1pt solid #000001;border-right:none;padding-top:0cm;padding-bottom:0cm;padding-left:0.159cm;padding-right:0.191cm;" | '''Kicad to Ngspice Converter:'''

Press '''Convert '''button
| style="background-color:#ffffff;border:1pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.159cm;padding-right:0.191cm;" | We will talk about the '''Ngspice Model, Device Modelling and subcircuits tab '''in later tutorials.


Press the '''Convert '''button to convert the '''Kicad Netlist''' to '''ngspice netlist'''
|-
| style="background-color:#ffffff;border-top:1pt solid #000001;border-bottom:1pt solid #000001;border-left:1pt solid #000001;border-right:none;padding-top:0cm;padding-bottom:0cm;padding-left:0.159cm;padding-right:0.191cm;" | 

Click '''Ok.'''

Close the '''kicad to ngspice''' tool 
| style="background-color:#ffffff;border:1pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.159cm;padding-right:0.191cm;" | A confirmation dialog box appears. Here let's click '''Ok.'''

Close the '''Kicad to ngspice''' tool by clicking close at top right corner of the window.
|-
| style="background-color:#ffffff;border-top:1pt solid #000001;border-bottom:1pt solid #000001;border-left:1pt solid #000001;border-right:none;padding-top:0cm;padding-bottom:0cm;padding-left:0.159cm;padding-right:0.191cm;" | '''eSim Main Window:'''

Click on '''Simulation.'''
| style="background-color:#ffffff;border:1pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.159cm;padding-right:0.191cm;" | Click on '''simulation '''from the '''eSim '''toolbar to simulate the example.
|-
| style="background-color:#ffffff;border-top:1pt solid #000001;border-bottom:1pt solid #000001;border-left:1pt solid #000001;border-right:none;padding-top:0cm;padding-bottom:0cm;padding-left:0.159cm;padding-right:0.191cm;" | 


| style="background-color:#ffffff;border:1pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.159cm;padding-right:0.191cm;" | An '''ngspice terminal '''and '''plot '''windows open along with a '''python plot''' window.
|-
| style="background-color:#ffffff;border-top:1pt solid #000001;border-bottom:1pt solid #000001;border-left:1pt solid #000001;border-right:none;padding-top:0cm;padding-bottom:0cm;padding-left:0.159cm;padding-right:0.191cm;" | '''Ngspice Plot:'''



| style="background-color:#ffffff;border:1pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.159cm;padding-right:0.191cm;" | The '''plot waveforms''' show '''transient analysis '''of the '''RC '''circuit. 


Close the '''Ngspice terminal '''and '''plot''' window.
|-
| style="background-color:#ffffff;border-top:1pt solid #000001;border-bottom:1pt solid #000001;border-left:1pt solid #000001;border-right:none;padding-top:0cm;padding-bottom:0cm;padding-left:0.159cm;padding-right:0.191cm;" | '''Python Plot Window:'''


Click on '''Potting tab''' >> maximize
| style="background-color:#ffffff;border:1pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.159cm;padding-right:0.191cm;" | Select the '''python plot''' window by clicking on '''Plotting''' tab in the '''dock area'''.


Maximize the '''Python plot''' window.
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| style="background-color:#ffffff;border-top:1pt solid #000001;border-bottom:1pt solid #000001;border-left:1pt solid #000001;border-right:none;padding-top:0cm;padding-bottom:0cm;padding-left:0.159cm;padding-right:0.191cm;" | 

Check '''IN''' and '''OUT '''nodes >> click '''plot'''



| style="background-color:#ffffff;border:1pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.159cm;padding-right:0.191cm;" | To plot the output:

Check the '''IN '''and '''OUT''' nodes and click on the '''plot''' button.


The '''output plot''' is shown in '''blue''' and '''input plot '''in '''red.'''
|-
| style="background-color:#ffffff;border-top:1pt solid #000001;border-bottom:1pt solid #000001;border-left:1pt solid #000001;border-right:none;padding-top:0cm;padding-bottom:0cm;padding-left:0.159cm;padding-right:0.191cm;" | '''Python Plot Window:'''

Multimeter Feature

Click on '''Multimeter''' >> Click on  '''open schematic '''
| style="background-color:#ffffff;border:1pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.159cm;padding-right:0.191cm;" | To view the '''rms values''' of '''node voltages,''' click on the '''multimeter''' button.


The '''Multimeter''' window opens up, which will be on top of all other windows.


'''Maximise''' the '''schematic '''and drag the '''multimeter windows''' to the corresponding nodes of '''schematic'''.
|-
| style="background-color:#ffffff;border-top:1pt solid #000001;border-bottom:1pt solid #000001;border-left:1pt solid #000001;border-right:none;padding-top:0cm;padding-bottom:0cm;padding-left:0.159cm;padding-right:0.191cm;" | 
| style="background-color:#ffffff;border:1pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.159cm;padding-right:0.191cm;" | <<PAUSE>>

Now let us summarize.
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| style="background-color:#ffffff;border-top:1pt solid #000001;border-bottom:1pt solid #000001;border-left:1pt solid #000001;border-right:none;padding-top:0cm;padding-bottom:0cm;padding-left:0.159cm;padding-right:0.191cm;" | '''Show Slide: '''

Summary



| style="background-color:#ffffff;border:1pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.159cm;padding-right:0.191cm;" | In this tutorial, we learnt to-

* Create '''circuit schematic '''
* Generate spice '''netlist'''
* Convert spice '''netlist '''to '''ngspice '''format
* Simulate the '''netlist'''
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| style="background-color:#ffffff;border-top:1pt solid #000001;border-bottom:1pt solid #000001;border-left:1pt solid #000001;border-right:none;padding-top:0cm;padding-bottom:0cm;padding-left:0.159cm;padding-right:0.191cm;" | '''Show Slide:''' 

Assignment - 1



| style="background-color:#ffffff;border:1pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.159cm;padding-right:0.191cm;" | Here are few assignments for you to solve.


Watch the '''Kicad '''and the '''Ngspice''' tutorials on the spoken tutorial website.


Create '''voltage divider''' by changing components in '''eSim''' and simulate it.
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| style="background-color:#ffffff;border-top:1pt solid #000001;border-bottom:1pt solid #000001;border-left:1pt solid #000001;border-right:none;padding-top:0cm;padding-bottom:0cm;padding-left:0.159cm;padding-right:0.191cm;" | '''Show Slide:''' 

Assignment - 2
| style="background-color:#ffffff;border:1pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.159cm;padding-right:0.191cm;" | Similarly, Create the '''astable multivibrator''' in '''eSim''' and simulate it.
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| style="background-color:#ffffff;border-top:1pt solid #000001;border-bottom:1pt solid #000001;border-left:1pt solid #000001;border-right:none;padding-top:0cm;padding-bottom:0cm;padding-left:0.159cm;padding-right:0.191cm;" | '''Show Slide:'''

Forum
| style="background-color:#ffffff;border:1pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.159cm;padding-right:0.191cm;" | Please post your timed queries in this forum.

|-
| style="background-color:#ffffff;border-top:1pt solid #000001;border-bottom:1pt solid #000001;border-left:1pt solid #000001;border-right:none;padding-top:0cm;padding-bottom:0cm;padding-left:0.159cm;padding-right:0.191cm;" | '''Show Slide:'''

FOSSEE Forum
| style="background-color:#ffffff;border:1pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.159cm;padding-right:0.191cm;" | Please post your general queries on eSim in this forum.
|-
| style="background-color:#ffffff;border-top:1pt solid #000001;border-bottom:1pt solid #000001;border-left:1pt solid #000001;border-right:none;padding-top:0cm;padding-bottom:0cm;padding-left:0.159cm;padding-right:0.191cm;" | '''Show Slide:'''

Textbook Companion
| style="background-color:#ffffff;border:1pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.159cm;padding-right:0.191cm;" | FOSSEE team coordinates the TBC project.
|-
| style="background-color:#ffffff;border-top:1pt solid #000001;border-bottom:1pt solid #000001;border-left:1pt solid #000001;border-right:none;padding-top:0cm;padding-bottom:0cm;padding-left:0.159cm;padding-right:0.191cm;" | '''Show Slide:'''

Acknowledgment

http://spoken-tutorial.org

| style="background-color:#ffffff;border:1pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.159cm;padding-right:0.191cm;" | Spoken Tutorial Project is funded by NMEICT, MHRD, Govt. of India.


For more details, visit this website.
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| style="background-color:#ffffff;border-top:1pt solid #000001;border-bottom:1pt solid #000001;border-left:1pt solid #000001;border-right:none;padding-top:0cm;padding-bottom:0cm;padding-left:0.159cm;padding-right:0.191cm;" | 

Previous slide



| style="background-color:#ffffff;border:1pt solid #000001;padding-top:0cm;padding-bottom:0cm;padding-left:0.159cm;padding-right:0.191cm;" | This is Usha from IIT Bombay, signing off.

Thank you.
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