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

{|border=1
|-
| '''Time'''
|'''Narration'''

|-
| 00:01
| Welcome to the spoken tutorial on “'''Schematic Creation '''and '''Simulation '''using''' eSim'''”

|-
| 00:08
| In this tutorial, using '''eSim,''' we will learn to-

Create '''circuit schematic'''

Generate '''spice netlist'''

Convert spice '''netlist '''to '''ngspice '''format

Simulate the '''netlist'''
 
|-
| 00:26
| To record this tutorial, we will use-

'''Ubuntu Linux OS '''16.04 

'''eSim '''version 1.1.2.

|-
| 00:38
| To practice this tutorial, basic knowledge of '''analog '''and''' digital electronics''' is required.

|-
|00:47
| To launch '''eSim''', double-click on the '''eSim''' icon on your desktop.

|-
| 00:55
| Alternately, you can also open '''eSim''' from the '''terminal.'''

|-
| 01:01
| To do so, press '''Ctrl, Alt '''and '''T''' keys together. Now, type '''esim''' and press '''Enter.'''

|-
| 01:11
| '''eSim '''window opens up.

|-
| 01:14
| Note that the project files created will be saved in the''' eSim-Workspace''' directory, by default. Press “'''Ok'''” in the dialog box.

|-
| 01:27
| Let us now create an '''RC circuit schematic '''and simulate it.

|-
| 01:33
| Click on the '''New Project button''', to create a new project. In the “'''Enter Project name'''” field, type '''RC '''and click on '''OK'''.

|-
| 01:47
| Please note that spaces are not allowed in the Project name.

|-
| 01:53
| Our new project '''RC''' will now appear under '''Projects.'''

|-
| 01:59
| '''Double-click''' on '''RC '''to select the project.

|-
| 02:04
| To create the '''circuit schematic''', click''' Open Schematic''' button on the left toolbar.

|-
| 02:12
| Click on '''Yes in''' the''' confirmation '''dialog box.

|-
| 02:17
| Ignore the '''eeschema error''' by clicking '''OK'''.

|-
| 02:22
| The '''Schematic editor '''window opens up.

|-
| 02:26
| Let us now add '''components''' to the '''schematic'''.

|-
| 02:31
| Click on '''Place component '''tool from the right toolbar. Now click anywhere on the '''editor'''.

|-
| 02:40
| Type '''eSim_Devices''' in the '''Filter''' field.

|-
| 02:49
| Then select '''R''' and click on '''OK'''. Now click anywhere on the '''editor'''.

|-
| 03:00
| Place the '''resistor R '''on the '''editor, '''by clicking on the '''editor '''once.

|-
| 03:07
| Zoom in by pressing '''F1.'''

|-
| 03:11
| You can also do so, by scrolling the scroll button of your mouse.

|-
| 03:18
| Click on the '''editor '''once again.

|-
| 03:22
| Type again '''eSim_Devices''' in the '''Filter''' field.  Then select '''C''' and click on '''OK'''.

|-
| 03:33
| Place the '''capacitor C '''on the '''editor '''as done before.

|-
| 03:39
| Click again on the '''editor'''.

|-
| 03:43
| Type '''eSim_Sources''' in the '''Filter''' field, 

|-
| 03:50
| select '''sine''' and click on '''OK'''.

|-
| 03:56
| Place the '''sine '''on the '''editor '''as done before.

|-
| 04:02
| Similarly, type '''gnd '''and place a '''ground terminal '''on '''editor'''.

|-
| 04:12
| Similarly, type '''eSim_Plot, '''select the''' plot_v1 '''and place it on the '''editor.'''

|-
| 04:26
| We need one more plot for output.

|-
| 04:30
|Place the cursor on '''plot_v1''', right click and select '''copy component'''. Now '''place it '''on the editor.

|-
| 04:45
| This is the '''plot component '''used to plot '''voltages '''at the required '''nodes.'''

|-
|04:52
| Let us now add '''labels''' to the '''schematic'''.

|-
| 04:56
|The '''labels''' are used to name the required '''nodes '''in the circuit.

|-
| 05:02
|This will help us understand the '''netlist''' and connection of our circuit. 

|-
| 05:09
| Click on '''Place global label '''tool from the right toolbar. Now click anywhere on the '''editor.'''

|-
| 05:19
|Type '''IN '''in text field and click on '''OK.'''

|-
| 05:27
| Similarly, place one more label '''OUT '''in editor.

|-
| 05:36
| Let us move and arrange the components to create the '''RC circuit.'''

|-
| 05:42
| To move the '''resistor, '''place the cursor on it and press the key ''''m''''.

|-
| 05:50
| Place it at the preferred location, by clicking on editor again.

|-
| 05:57
| To rotate the '''resistor, '''place the cursor on it and press the key ''''r'.'''

|-
| 06:05
|Similarly, move the '''plot components '''and '''labels, '''as shown.

|-
| 06:11
| Now, let us connect the various components using wires.

|-
| 06:16
| Click on '''Place wire '''button''' '''from the right toolbar

|-
| 06:22
|Click on one end of the '''sine source'''.

|-
| 06:26
|Move the cursor point to one end of the '''resistor '''and click on it.

|-
| 06:33
| Similarly, connect all the components as demonstrated here.

|-
| 06:40
| The '''plot''' components are placed at the '''output '''and '''input nodes'''.

|-
| 06:45
|This helps us to view the corresponding '''voltage waveforms '''on simulation.

|-
| 06:53
| To '''annotate '''the '''schematic components''',  Click on '''Annotate '''button from the top toolbar.

|-
| 07:01
|Click on '''Annotate '''and then click on '''OK.''' The '''schematic '''is now '''annotated'''.

|-
| 07:11
| To assign a value to the '''resistor''', right-click on it and choose '''Edit Component.'''

|-
| 07:18
|Click on '''Value'''. Type '''1k '''and click on '''OK'''.

|-
| 07:26
| Similarly, assign value '''1u''' for '''capacitor.'''

|-
| 07:33
| Now let us do '''electrical rules check '''for this '''schematic'''.

|-
| 07:38
| Click on '''Perform electrical rules check '''button on the '''top toolbar '''. Click on '''Run'''.

|-
| 07:47
| We can see the errors -

'''global label not connected''''' '' and''' a pin is not driven to components'''

|-
| 07:58
| Ignore''' '''the '''global label not connected '''error, since we have used the '''labels '''for naming the '''nodes '''only.

|-
| 08:06
| Close the '''ERC '''window.

|-
| 08:09
| Note that the '''ground terminal pin is '''highlighted by a green arrow in the '''schematic.'''

|-
| 08:17
| It means that this '''pin '''is not driven by any power source.

|-
| 08:22
| To prevent this, let us place a '''power flag.'''

|-
| 08:26
| Click on '''Place component '''tool. Click on the '''Schematic editor'''.

|-
| 08:33
| Type '''PWR underscore FLAG and Click OK'''. Place it on the '''schematic editor.'''

|-
| 08:47
| Connect this '''power flag '''to the '''ground terminal '''using a wire.

|-
| 08:53
| This indicates that a power source will be connected here.

|-
| 08:59
| Now repeat the '''electrical rules check'''.

|-
| 09:04
| There will be only '''global label not connected''' errors, which can be '''ignored.'''

|-
| 09:12
| Click on '''Delete Markers''' and then click on '''Close.'''

|-
| 09:18
| Now let us generate the''' netlist '''of this '''circuit.'''

|-
| 09:23
| Click on '''Generate netlist '''button''' '''from the top toolbar.

|-
|09:29
| Click on the '''Spice '''tab. Check the option '''Default format '''and then click on '''Generate.''' Click on '''Save.'''

|-
| 09:41
| A Kicad''' netlist '''of the '''RC circuit '''has been generated. Now minimise the '''schematic editor.'''

|-
| 09:51
| Now, let us add simulation parameters to this '''netlist.'''

|-
| 09:57
| Click on '''Convert Kicad to Ngspice '''from '''eSim '''toolbar.

|-
| 10:04
| Let us add '''transient parameters''' in '''Analysis tab.'''

|-
| 10:09
| By default, '''Transient''' is selected.

|-
| 10:13
| Scroll down to enter values in the '''Transient analysis''' fields.

|-
| 10:20
| Make '''Start Time '''equal to '''0 '''by doing the following:

|-
| 10:27
| Type '''0 '''in the start textbox.

|-
| 10:32
| Similarly, make the '''Step time 5 milliseconds''' and '''Stop time 30 milliseconds.'''

|-
| 10:43
| Let us add the '''source details'''

|-
| 10:45
| To do so, click on '''Source details''' tab.

|-
| 10:51
| '''Enter '''the '''offset value '''as '''0 '''and press '''Tab.'''

|-
| 10:57
| Type '''5 '''for '''amplitude''', '''50 '''for '''frequency '''and''' 0 '''for both '''delay time '''and '''damping factor'''.

|-
| 11:10
| We will talk about the '''Ngspice Model, Device Modelling and subcircuits tab '''in later tutorials.

|-
| 11:20
| Press the '''Convert '''button to '''convert the kicad netlist to ngspice netlist'''

|-
|11:28
| A confirmation dialog box appears. Here let's click O'''k.'''

|-
| 11:35
| Close the '''kicad to ngspice''' tool by clicking close at the top right corner of the window.

|-
| 11:43
| Click on '''simulation '''from the '''eSim '''toolbar to simulate the '''example.'''

|-
| 11:50
| An '''ngspice terminal '''and '''plot '''windows open along with a '''python plot''' window.

|-
| 11:58
| The plot waveforms show '''transient analysis '''of the '''RC '''circuit. 

|-
| 12:04
| Close the '''Ngspice terminal '''and '''plot''' window.

|-
| 12:09
| Select the python plot window by clicking on '''Plotting''' tab in the dock area.

|-
| 12:16
| Maximize the '''Python''' plot window.

|-
| 12:20
| To plot the output: Check the '''IN '''and '''OUT''' nodes and click on the '''plot''' button.

|-
| 12:28
| The '''output plot''' is shown in '''blue''' and '''input plot '''in '''red.'''

|-
| 12:35
| To view the '''rms values''' of '''node voltages,''' click on the '''multimeter''' button.

|-
| 12:42
| The '''Multimeter''' window opens up, which will be on top of all other windows.

|-
| 12:49
| '''Maximise''' the '''schematic '''and '''drag''' the '''multimeter windows''' on the corresponding nodes of schematic.

|-
| 12:59
| Let us see how to '''simulate''' a circuit involving '''semiconductor devices''' and '''subcircuits'''.

|-
| 13:06
| Let us simulate '''7805VoltageRegulator''' circuit, which has '''diode'''s and a '''LM7805 regulator IC'''.

|-
| 13:16
| Click on '''Open Project''' button from the left toolbar.

|-
|13:21
|Click on '''Desktop.''' Click on '''7805VoltageRegulator.'''

|-
|13:27
|And click on the '''Open button''' at the bottom right corner.

|-
|13:32
|In the '''Projects '''window of '''eSim, '''double-click on '''7805VoltageRegulator.'''

|-
| 13:39
| Click on '''Open Schematic''' button from the left toolbar.

|-
| 13:44
| I have annotated, performed '''ERC''', and generated the '''spice netlist''' for this circuit.

|-
| 13:51
| I will now switch back to the '''eSim Main Window'''

|-
| 13:55
| Now, let us add '''simulation parameters''' to this '''netlist.'''

|-
| 14:00
| Click on '''Convert Kicad to Ngspice '''from '''eSim '''toolbar.

|-
| 14:06
| I have already added the parameter values in the '''Analysis and source details''' tab.

|-
| 14:14
| Let us assign '''device''' '''models''' to the '''semiconductor '''components inside the '''schematic'''.

|-
| 14:21
| To do so, click on '''Device Modelling '''tab.

|-
| 14:26
| We will add a '''device model''' for '''Diode 1: esim_diode'''

|-
|14:33
| Click on '''Add '''and then double-click on '''Diode.'''

|-
|14:38
| Click on '''D.lib''' Then click on the '''Open''' button.

|-
| 14:44
|We will perform the same steps for the remaining '''diodes''' as well.

|-
| 14:50
| Now let’s add the '''subcircuit''' file for '''LM_7805 subcircuit'''. To do so, click on '''Subcircuits '''tab.

|-
| 15:01
| Click on '''Add''' Double-click on '''lm7805 '''folder and then click on the '''Open''' button.

|-
| 15:10
| Press the '''Convert '''button to convert the''' kicad netlist '''to '''ngspice netlist'''.

|-
|15:16
| A confirmation dialog box appears. Here let's click '''Ok.'''

|-
| 15:22
| Click on '''simulation '''from the left''' '''toolbar.

|-
| 15:27
| An '''ngspice terminal '''and ngspice '''plot '''windows opens along with a '''python plot''' window.

|-
|15:37
| Click on''' in1, in2 '''and''' out '''checkboxes in the '''python plot''' window.

|-
|15:46
| Scroll down and click on '''plot''' button.

|-
| 15:51
| Now let us summarize.

|-
|15:54
| In this tutorial, we learnt how to-

Create '''circuit schematic '''

Generate spice '''netlist'''

Convert spice '''netlist '''to '''ngspice '''format 

Simulate the '''netlist'''

|-
| 16:10
| Please post your timed queries in this forum.

|-
| 16:14
| Please post your general queries on eSim in this forum.

|-
| 16:20
| '''FOSSEE''' team coordinates the TBC project.

|-
| 16:30
| Spoken Tutorial Project is funded by '''NMEICT, MHRD''', Govt. of India. For more details, visit this website.

|-
| 16:36
| This is Usha from IIT Bombay, signing off. Thank you.

|-
|}