Ngspice/C2/DC-Sweep-Analysis/English-timed - Revision history

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Ranjana at 05:19, 4 September 2014

2014-09-04T05:19:41Z

Ranjana: Created page with "'''Title of the Script:''' DC sweep analysis in ngspice '''Author:''' '''Abhishek''' '''Keywords: '''video tutorial,''' '''ngspice. {| border=1 !Time !Narration |- |..."

2014-09-04T05:18:43Z

Created page with "'''Title of the Script:''' DC sweep analysis in ngspice '''Author:''' '''Abhishek''' '''Keywords: '''video tutorial,''' '''ngspice. {| border=1 !Time !Narration |- |..."

New page

'''Title of the Script:''' DC sweep analysis in ngspice

'''Author:''' '''Abhishek'''

'''Keywords: '''video tutorial,''' '''ngspice.

{| border=1
!Time
!Narration

|-
| 00:01
| Welcome to this '''spoken''' '''tutorial''' on “'''DC sweep analysis in Ngspice'''”

|-
| 00:07
| In this tutorial we will learn,

|-
| 00:09
| To perform, '''DC sweep analysis''' and '''Nested DC sweep analysis.'''

|-
| 00:14
| Basic knowledge of '''electronic''' '''circuits''' is a prerequisite for this tutorial.

|-
| 00:19
| Basic knowledge of '''Ubuntu''' '''Linux''' and '''shell''' '''commands''' is also required.

|-
| 00:25
| '''Ubuntu''' 12.04 is the '''operating''' '''system''' used with '''ngspice''' '''version''' 23 installed.

|-
| 00:33
| We will use the example '''circuit''' shown.

|-
| 00:36
| The '''circuit''' consists of three prominent '''nodes''' '''“1”, “2” and “3”. '''

|-
| 00:40
| In addition, a fourth '''node''' called as '''reference OR datum node''' must be marked as node '''“0”.'''

|-
| 00:47
| This is mandatory for any '''circuit.'''

|-
| 00:51
| Let us open the '''ngspice''' '''netlist''' '''file''' '''example.cir''' corresponding to the '''circuit''' '''schematic''' shown before, in the '''text''' '''editor'''.

|-
| 01:00
| I have already opened this file in '''gedit text editor'''.

|-
| 01:04
| Note that '''netlist''' '''file''' is saved with '''.cir''' '''extension'''

|-
| 01:10
| We can see all the '''components''' like '''voltage''' '''source,''' '''resistors''' and information about '''nodes''' connecting them together.

|-
| 01:18
| '''dc''' '''command''' included in the '''netlist''' '''file''' is used to perform '''dc sweep analysis'''.

|-
| 01:25
| General form to use '''dc''' '''command''' is as shown,

|-
| 01:29
| '''dot DC SRCNAM VSTART VSTOP VINCR'''

|-
| 01:35
| where,

|-
| 01:37
| '''SRCNAM''' is name of '''independent''' '''voltage''' and '''current''' '''source.'''

|-
| 01:42
| '''VSTART, VSTOP and VINCR''' are the starting, final and increment values respectively for the '''source.'''

|-
| 01:51
| As you see we are sweeping '''voltage''' '''source''' V1 for a single value of 24 '''VOLTS''' with the step increment of 1.

|-
| 02:02
| Now we will '''simulate''' this '''circuit,''' and find out '''voltage''' values at different '''nodes.'''

|-
| 02:08
| let us open '''ngspice''' through '''terminal.'''

|-
| 02:11
| Press '''Control Alt T''' together.

|-
| 02:14
| This will open the '''Terminal''' '''window.'''

|-
| 02:18
| Now I go to the '''folder''' where the '''netlist''' '''file,''' '''example.cir,''' is '''saved.'''

|-
| 02:23
| I do this as follows:

|-
| 02:26
| '''cd downloads path to the folder '''and press '''Enter.'''

|-
| 02:33
| Now let us '''simulate''' the '''ngspice''' '''file.'''

|-
| 02:36
| Let us see how this can be done.

|-
| 02:39
| On '''terminal,'''

|-
| 02:40
| Type '''ngspice '''space''' example.cir''' and press '''Enter.'''

|-
| 02:51
| Value of '''voltage''' v1 is 24 '''volts.'''

|-
| 02:56
| Value of '''voltage''' v2 is 9.746 '''volts.'''

|-
| 03:01
| Other '''node''' '''voltages''' are also displayed.

|-
| 03:05
| Next we will see how to do '''nested dc sweep analysis.'''

|-
| 03:10
| Generalized form for this is as shown.

|-
| 03:14
| '''Dot DC SRCNAM VSTART VSTOP VINCR SRC2 START2 STOP2 INCR2'''

|-
| 03:24
| where,

|-
| 03:26
| '''SRCNAM''' is the primary '''sweep''' '''variable''' and '''SRC2''' is the secondary '''sweep''' '''variable.'''

|-
| 03:33
| Secondary '''sweep''' '''variable''' forms the outer loop.

|-
| 03:36
| That is for every increment of secondary '''sweep variable,''' the first '''sweep variable''' is stepped through its entire range of values.

|-
| 03:45
| It will be more clear with the example '''circuit''' we will '''simulate.'''

|-
| 03:50
| We will use '''Bipolar junction transistor '''based '''circuit''' in '''common base''' configuration.

|-
| 03:56
| Primary '''sweep variable''' is '''voltage''' '''Vin''' connected between '''emitter''' and '''base''' '''terminals.'''

|-
| 04:03
| Secondary '''sweep''' '''variable''' will be the '''load''' '''resistor''' '''Rload.'''

|-
| 04:08
| We will '''plot''' '''output voltage '''versus '''input voltage '''for different values of the '''load resistor'''.

|-
| 04:14
| The output voltage is the voltage across Rload and the input voltage is '''Vin'''

|-
| 04:21
| Following is the '''netlist''' corresponding to the '''common base transistor circuit.'''

|-
| 04:26
| '''NPN''' is the '''default''' '''model''' used for '''transistor,''' '''mod1''', in the '''circuit.'''

|-
| 04:33
| As you can see Vin is varied from 0.2 '''volts''' to 2 '''volts''' with step increment of 0.02 '''volts.'''

|-
| 04:45
| '''Rload''' is varied from '''5kiloohms''' to 10 '''kiloohms''' with step increment of '''2kiloohms'''

|-
| 04:53
| For different values of '''Rload, Vin''' is swept through the complete range of 0.2 to 2.

|-
| 04:59
| Graphs of '''output''' '''voltage''' versus '''input''' '''voltage''' is plotted in each case.

|-
| 05:05
| '''Plot v of 3,4''' plots the '''voltage''' '''drop''' between the '''nodes''' 3 and 4, that is the '''voltage''' across '''Rload.'''

|-
| 05:15
| Now we will '''simulate''' this '''circuit''' and see the results.

|-
| 05:19
| On the '''terminal''' type '''source space example nested.cir '''and press '''Enter.'''

|-
| 05:35
| This will '''run''' the '''simulation.'''

|-
| 05:37
| '''source''' '''command''' is used to '''simulate''' the '''netlist''' from within the '''ngspice''' '''simulator''' '''environment'''

|-
| 05:44
| As you can see graph of '''output voltage''' versus '''input voltage''' is plotted for different values of '''load''' '''resistor.'''

|-
| 05:52
| Quit the '''ngspice''' '''simulator''' by typing '''quit''' and press '''enter.'''

|-
| 05:59
| Here we come to the end of this '''tutorial'''

|-
| 06:02
| In this tutorial we learnt,

|-
| 06:04
| To perform,

|-
| 06:05
| DC sweep analysis of a given circuit.

|-
| 06:08
| Nested DC sweep analysis of a given circuit.

|-
| 06:12
| Watch the video available at the following link

|-
| 06:14
| It summarizes the Spoken Tutorial project

|-
| 06:18
| If you do not have good bandwidth, you can download and watch it

|-
| 06:22
| The Spoken Tutorial Project Team

|-
| 06:24
| Conducts workshops using spoken tutorials

|-
| 06:27
| Gives certificates for those who pass an online test

|-
| 06:31
| For more details, please write to contact at spoken hyphen tutorial dot org

|-
| 06:37
| Spoken Tutorial is a part of the Talk to a Teacher project

|-
| 06:41
| It is supported by the National Mission on Education through ICT, MHRD, Government of India

|-
| 06:47
| More information on this Mission is available at

|-
| 06:51
| spoken hyphen tutorial dot org slash NMEICT hyphen Intro

|-
| 06:58
| Thank you for joining.

|-
| 06:59
| Hope you found this tutorial useful.

|-
| 07:02
| This is Anuradha Amrutkar signing off.

|}

@@ Line 253: / Line 253: @@
 |-
 | 06:04
-| To perform-
+| To perform- DC sweep analysis of a given circuit.
-−
-|-
-| 06:05
-| DC sweep analysis of a given circuit.
 |-

@@ Line 125: / Line 125: @@
 |-
 |   02:39
-| On terminal,
+| On terminal,Type: '''ngspice '''space''' example.cir''' and press '''Enter.'''
-−
-|-
-|   02:40
-| Type: '''ngspice '''space''' example.cir''' and press '''Enter.'''
 |-
@@ Line 261: / Line 257: @@
 |-
 | 06:05
-|* DC sweep analysis of a given circuit.
+| DC sweep analysis of a given circuit.
 |-
-| 06:08
+|06:08
-|* Nested DC sweep analysis of a given circuit.
+|Nested DC sweep analysis of a given circuit.
 |-
@@ Line 285: / Line 281: @@
 |-
 | 06:24
-|* Conducts workshops using spoken tutorials.
+| Conducts workshops using spoken tutorials.
 |-
 | 06:27
-|* Gives certificates for those who pass an online test.
+| Gives certificates for those who pass an online test.
 |-
@@ Line 313: / Line 309: @@
 |-
 | 06:58
-|  Thank you for joining.
+| Thank you for joining. Hope you found this tutorial useful.
-−
-|-
-| 06:59
-| Hope you found this tutorial useful.
 |-

@@ Line 133: / Line 133: @@
 |-
 |   02:51
-| Value of voltage v1 is 24 volts.
+| Value of voltage v1 is 2.4 volts.
 |-

@@ Line 20: / Line 20: @@
 |-
 |  00:09
-|* To perform '''DC sweep analysis''' and '''Nested DC sweep analysis.'''
+| To perform '''DC sweep analysis''' and '''Nested DC sweep analysis.'''
 |-

@@ Line 1: / Line 1: @@
 {| border=1
-!Time
+|'''Time'''
-!Narration
+|'''Narration'''
 |-
 | 00:01
-|  Welcome to this '''spoken tutorial''' on “'''DC sweep analysis in Ngspice'''”.
+|  Welcome to this '''spoken tutorial''' on '''DC sweep analysis in Ngspice'''.
 |-
@@ Line 40: / Line 33: @@
 |-
 |   00:36
-| The circuit consists of three prominent '''nodes'''- “1”, “2” and “3”.
+| The circuit consists of three prominent '''nodes'''- '''1, 2 and 3'''.
 |-
 |   00:40
-| In addition, a fourth '''node''' called as '''reference''' OR '''datum node''' must be marked as node “0”.
+| In addition, a fourth '''node''' called as '''reference''' OR '''datum node''' must be marked as node '''“0”'''.
 |-
@@ Line 52: / Line 45: @@
 |-
 |  00:51
-| Let us open the '''ngspice netlist''' file "example.cir" corresponding to the '''circuit schematic''' shown before, in the '''text editor'''.
+| Let us open the '''ngspice netlist''' file '''"example.cir"''' corresponding to the '''circuit schematic''' shown before, in the '''text editor'''.
 |-
@@ Line 60: / Line 53: @@
 |-
 |  01:04
-| Note that '''netlist''' file is saved with ".cir" '''extension'''.
+| Note that '''netlist''' file is saved with '''".cir"''' '''extension'''.
 |-
@@ Line 68: / Line 61: @@
 |-
 |  01:18
-| ''' 'dc' command''' included in the '''netlist''' file is used to perform '''dc sweep analysis'''.
+| ''' dc command''' included in the '''netlist''' file is used to perform '''dc sweep analysis'''.
 |-
 |  01:25
-|  General form to use ''''dc' command''' is as shown:
+|  General form to use '''dc command''' is as shown:
 |-
@@ Line 112: / Line 105: @@
 |-
 |  02:18
-| Now I go to the folder where the '''netlist''' file, "example.cir", is saved.
+| Now I go to the folder where the '''netlist''' file, '''example.cir''', is saved.
 |-
@@ Line 200: / Line 193: @@
 |-
 |  04:14
-| The output voltage is the voltage across 'Rload' and the input voltage is 'Vin'.
+| The output voltage is the voltage across '''Rload''' and the input voltage is '''Vin'''.
 |-
@@ Line 208: / Line 201: @@
 |-
 | 04:26
-| "NPN" is the default model used for transistor "mod1", in the circuit.
+| '''NPN''' is the default model used for transistor "'''mod1'''", in the circuit.
 |-
@@ Line 216: / Line 209: @@
 |-
 | 04:45
-| 'Rload' is varied from 5 '''kilo-ohms''' to 10 '''kilo-ohms''' with step increment of '''2 kilo-ohms'''.
+| '''Rload''' is varied from 5 '''kilo-ohms''' to 10 '''kilo-ohms''' with step increment of '''2 kilo-ohms'''.
 |-
 | 04:53
-| For different values of 'Rload', 'Vin' is swept through the complete range of 0.2 to 2.
+| For different values of '''Rload''', '''Vin''' is swept through the complete range of 0.2 to 2.
 |-
@@ Line 228: / Line 221: @@
 |-
 | 05:05
-| '''Plot v of 3 comma 4''' plots the '''voltage drop''' between the nodes 3 and 4, that is the voltage across 'Rload'.
+| '''Plot v of 3 comma 4''' plots the '''voltage drop''' between the nodes 3 and 4, that is the voltage across '''Rload'''.
 |-
@@ Line 300: / Line 293: @@
 |-
 | 06:31
-| For more details, please write to:
+| For more details, please write to:'''contact at spoken hyphen tutorial dot org'''
 '''contact at spoken hyphen tutorial dot org'''
 |-

@@ Line 112: / Line 112: @@
 |-
 |  02:18
-| Now I go to the '''folder''' where the '''netlist''' '''file,''' '''example.cir,''' is '''saved.'''
+| Now I go to the folder where the '''netlist''' file, "example.cir", is saved.
 |-
@@ Line 120: / Line 120: @@
 |-
 |  02:26
-| '''cd downloads path to the folder '''and press '''Enter.'''
+| '''cd downloads''' path to the folder and press '''Enter.'''
 |-
 |   02:33
-|    Now let us '''simulate''' the '''ngspice''' '''file.'''
+|  Now, let us '''simulate''' the '''ngspice''' file.
 |-
@@ Line 132: / Line 132: @@
 |-
 |   02:39
-| On '''terminal,'''
+| On terminal,
 |-
 |   02:40
-| Type '''ngspice '''space''' example.cir''' and press '''Enter.'''
+| Type: '''ngspice '''space''' example.cir''' and press '''Enter.'''
 |-
 |   02:51
-| Value of '''voltage''' v1 is 24 '''volts.'''
+| Value of voltage v1 is 24 volts.
 |-
 |  02:56
-| Value of '''voltage''' v2 is 9.746 '''volts.'''
+| Value of voltage v2 is 9.746 volts.
 |-
 |   03:01
-| Other '''node''' '''voltages''' are also displayed.
+| Other node voltages are also displayed.
 |-
 |   03:05
-|   Next we will see how to do '''nested dc sweep analysis.'''
+| Next we will see how to do '''nested dc sweep analysis.'''
 |-
@@ Line 164: / Line 164: @@
 |-
 |   03:24
-| where,
+| where
 |-
 |   03:26
-| '''SRCNAM''' is the primary '''sweep''' '''variable''' and '''SRC2''' is the secondary '''sweep''' '''variable.'''
+| '''SRCNAM''' is the primary '''sweep''' variable and '''SRC2''' is the secondary '''sweep''' variable.
 |-
 |   03:33
-| Secondary '''sweep''' '''variable''' forms the outer loop.
+| Secondary '''sweep variable''' forms the outer loop.
 |-
 |   03:36
-| That is for every increment of secondary '''sweep variable,''' the first '''sweep variable''' is stepped through its entire range of values.
+| That is, for every increment of secondary '''sweep variable,''' the first '''sweep variable''' is stepped through its entire range of values.
 |-
 |   03:45
-| It will be more clear with the example '''circuit''' we will '''simulate.'''
+| It will be more clear with the example circuit we will '''simulate.'''
 |-
 |  03:50
-|  We will use '''Bipolar junction transistor '''based '''circuit''' in '''common base''' configuration.
+|  We will use '''Bipolar junction transistor '''based circuit in '''common base''' configuration.
 |-

@@ Line 12: / Line 12: @@
 |-
 | 00:01
-|  Welcome to this '''spoken''' '''tutorial''' on “'''DC sweep analysis in Ngspice'''”
+|  Welcome to this '''spoken tutorial''' on “'''DC sweep analysis in Ngspice'''”.
 |-
 |  00:07
-| In this tutorial we will learn,
+| In this tutorial, we will learn:
 |-
 |  00:09
-| To perform, '''DC sweep analysis''' and '''Nested DC sweep analysis.'''
+|* To perform '''DC sweep analysis''' and '''Nested DC sweep analysis.'''
 |-
 |  00:14
-|  Basic knowledge of '''electronic''' '''circuits''' is a prerequisite for this tutorial.
+|  Basic knowledge of '''electronic circuits''' is a prerequisite for this tutorial.
 |-
 |  00:19
-| Basic knowledge of '''Ubuntu''' '''Linux''' and '''shell''' '''commands''' is also required.
+| Basic knowledge of '''Ubuntu Linux''' and '''shell commands''' is also required.
 |-
 |   00:25
-|    '''Ubuntu''' 12.04 is the '''operating''' '''system''' used with '''ngspice''' '''version''' 23 installed.
+|  '''Ubuntu 12.04''' is the '''operating system''' used with '''ngspice''' version 23 installed.
 |-
@@ Line 40: / Line 40: @@
 |-
 |   00:36
-| The '''circuit''' consists of three prominent '''nodes''' '''“1”, “2” and “3”. '''
+| The circuit consists of three prominent '''nodes'''- “1”, “2” and “3”.
 |-
 |   00:40
-| In addition, a fourth '''node''' called as '''reference OR datum node''' must be marked as node '''“0”.'''
+| In addition, a fourth '''node''' called as '''reference''' OR '''datum node''' must be marked as node “0”.
 |-
 |   00:47
-| This is mandatory for any '''circuit.'''
+| This is mandatory for any circuit.
 |-
 |  00:51
-| Let us open the '''ngspice''' '''netlist''' '''file''' '''example.cir''' corresponding to the '''circuit''' '''schematic''' shown before, in the '''text''' '''editor'''.
+| Let us open the '''ngspice netlist''' file "example.cir" corresponding to the '''circuit schematic''' shown before, in the '''text editor'''.
 |-
 |  01:00
-| I have already opened this file in '''gedit text editor'''.
+| I have already opened this file in '''gedit''' text editor.
 |-
 |  01:04
-| Note that '''netlist''' '''file''' is saved with '''.cir''' '''extension'''
+| Note that '''netlist''' file is saved with ".cir" '''extension'''.
 |-
 |  01:10
-| We can see all the '''components''' like '''voltage''' '''source,''' '''resistors''' and information about '''nodes''' connecting them together.
+| We can see all the components like '''voltage source, resistors''' and information about '''nodes''' connecting them together.
 |-
 |  01:18
-| '''dc''' '''command''' included in the '''netlist''' '''file''' is used to perform '''dc sweep analysis'''.
+| ''' 'dc' command''' included in the '''netlist''' file is used to perform '''dc sweep analysis'''.
 |-
 |  01:25
-|   General form to use '''dc''' '''command''' is as shown,
+|  General form to use ''''dc' command''' is as shown:
 |-
@@ Line 80: / Line 80: @@
 |-
 |  01:35
-| where,
+| where
 |-
 |  01:37
-| '''SRCNAM''' is name of '''independent''' '''voltage''' and '''current''' '''source.'''
+| '''SRCNAM''' is name of independent voltage and current '''source.'''
 |-
 |  01:42
-| '''VSTART, VSTOP and VINCR''' are the starting, final and increment values respectively for the '''source.'''
+| '''VSTART, VSTOP''' and '''VINCR''' are the starting, final and increment values respectively, for the '''source.'''
 |-
 | 01:51
-|   As you see we are sweeping '''voltage''' '''source''' V1 for a single value of 24 '''VOLTS''' with the step increment of 1.
+|   As you see, we are '''sweep'''ing '''voltage source V1''' for a single value of 24 '''VOLTS''' with the step increment of 1.
 |-
 | 02:02
-| Now we will '''simulate''' this '''circuit,''' and find out '''voltage''' values at different '''nodes.'''
+| Now, we will '''simulate''' this circuit and find out voltage values at different nodes.
-−
 |-
 |  02:08
-|  let us open '''ngspice''' through '''terminal.'''
+|  Let us open '''ngspice''' through '''terminal.'''
 |-
 |  02:11
-| Press '''Control Alt T''' together.
+| Press '''Control, Alt, T''' together.
 |-
 |  02:14
-| This will open the '''Terminal''' '''window.'''
+| This will open the '''Terminal window.'''
 |-

@@ Line 57: / Line 57: @@
 |  01:00
 | I have already opened this file in '''gedit text editor'''.
 |-
@@ Line 82: / Line 81: @@
 |  01:35
 | where,
 |-
@@ Line 95: / Line 93: @@
 | 01:51
 |   As you see we are sweeping '''voltage''' '''source''' V1 for a single value of 24 '''VOLTS''' with the step increment of 1.
 |-
@@ Line 161: / Line 158: @@
 |   03:10
 | Generalized form for this is as shown.
 |-
@@ Line 170: / Line 166: @@
 |   03:24
 | where,
 |-
@@ Line 247: / Line 242: @@
 |  05:35
 | This will '''run''' the '''simulation.'''
 |-
@@ Line 296: / Line 290: @@
 | 06:22
 |  The Spoken Tutorial Project Team
 |-