Simulating an Astable Multivibrator - English
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Simulating astable multivibrator
upon clicking the simulate option in esim, the application closes automatically. Unable to perform simulation,how to resolve this issue?
10-11M 0-10S Mothish
Answer last updated on: June 9, 2025, 4:13 p.m.
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About Converting KICAD to ngspice
In the tutorials, a particular value is taken for the analysis, and for the source, can we change the values other than putting the same values which is shown in the Tutorial, if we can choose our own values what are the conditions or rules we should follow?
07-08M 50-60S tarakratna1301
Answer last updated on: Oct. 9, 2023, 5:46 p.m.
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SIMULATION
After doing the same procedure as shown in the video , unable to get the same simulation waveforms as shown in tutorial, it is showing a straight line.
09-10M 0-10S priya___123
Answer last updated on: June 6, 2022, 11:02 p.m.
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Use of power falg
Sir, why we haven't used the power flag in the ground wire in the schematic editor whereas we did the same operation for RC circuit's schematic's ground?
08-09M 30-40S sc256356
Answer last updated on: May 31, 2022, 1:31 p.m.
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couldn't open the schematic diagram
couldn't open the astablemultivibrator project on esim. Its throwing the error message as , "Error: The project doesn't contain any .Proj file. Please select the proper project directory else you won't be able to perform any operations." I couldn't even open the file normally which is saved withe the extension ".sch" and if I open normally its redirecting me to the Autodesk Eagle screen, where its asking me to sign in or create an account. How should I go further?
03-04M 20-30S Swarna10
Answer last updated on: Oct. 20, 2021, 12:28 p.m.
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unable to read analysis file
while simulating 555 astable multivibrator the following error shows up. I have checked all the connections in the schematic and found nothing wrong and the error persists. Can u please tell me what the error means in any circuit and how to rectify it.
08-09M 20-30S kalyanicc
Answer last updated on: July 9, 2021, 8:13 a.m.
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How to get library files?
When i am doing exercise, in device modeling when add button is clicked library files will not appear for diode transistor
12-13M 40-50S joshiniki731@gmail.com
Answer last updated on: May 28, 2020, 6:53 p.m.
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Simulation fault
I'm unable to get the same simulation output as shown in the tutorial
11-12M 50-60S Mounikabukkuru
Answer last updated on: May 23, 2020, 5:07 p.m.
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Unable to reun simulation of 555 astable multivibrator
Dear Sir,I am unable to run simulation of 555 Astable Multivibrator. The error given in the file as shown below:******** ngspice-31 : Circuit level simulation program** The U. C. Berkeley CAD Group** Copyright 1985-1994, Regents of the University of California.** Please get your ngspice manual from http://ngspice.sourceforge.net/docs.html** Please file your bug-reports at http://ngspice.sourceforge.net/bugrep.html** Creation Date: Oct 6 2019 15:17:58******Circuit: * c:\fossee\esim\examples\astable555\astable555.cirError on line 0 : ) unknown device type - error Reducing trtol to 1 for xspice 'A' devicesDoing analysis at TEMP = 27.000000 and TNOM = 27.000000Warning: Too many analog/event-driven solution alternationsTransient solution failed -Last Node Voltages------------------Node Last Voltage Previous Iter---- ------------ -------------v_out 5 5net-_r1-pad1_ 10 10net-_r1-pad2_ 9.99507 9.99507c_out 9.94573 9.94573net-_c2-pad1_ 6.67761 6.67761x1.18 -65986.8 -65986.8x1.23 3.34705 3.34705x1.9 0.2 0.2x1.2 0.2 0.2x1.20 -65986.8 -65986.8x1.17 32681.2 32681.2x1.19 32681.2 32681.2x1.11 5 5x1.12 0 0e.x1.e1#branch 0 0e.x1.e2#branch 0 0v1#branch -0.000669411 -0.000669411a.x1.a4#branch_1_0 0 0a.x1.a3#branch_1_0 0 0a.x1.a6#branch_1_0 4.03e-12 4.03e-12a.x1.a5#branch_1_0 -0.005 -0.005doAnalyses: Too many iterations without convergencerun simulation(s) abortedError(parse.c--checkvalid): c_out: no such vector.Error(parse.c--checkvalid): a.x1.a3#branch_1_0: no such vector.Error: no such vector v(v_out)Error: no such vector v(c_out)ngspice 1 ->
12-13M 40-50S prof.abpatil@gmail.com
Answer last updated on: May 10, 2020, 9:55 a.m.
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getting error in ngspice
not getting outputError: bad v() syntaxError: bad v() syntaxError: bad v() syntaxngspice 1 ->
09-10M 20-30S skibrar
Answer last updated on: April 30, 2020, 11:07 a.m.
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Simulating 555 based astable multivibrator
Hello Madam/SirAm getting run time error while simulating 555 based astable multivibrator. Have tried best, am not able to resolve the error. Have verified the simple ckt simulation in LT Spice, and apparently it works. Please do help in resolving the doubt. Am attaching herewith in-line the .out file* c:\\users\\prasad.joshi\\esim-workspace\\astable555\\astable555.cir.include lm555n.sub* u2 net-_c1-pad1_ ic.ic v(net-_c1-pad1_)=0x1 gnd net-_c1-pad1_ net-_r3-pad1_ net-_r1-pad1_ net-_c2-pad1_ net-_c1-pad1_ net-_r1-pad2_ net-_r1-pad1_ lm555nr2 net-_r1-pad2_ net-_c1-pad1_ 10kr1 net-_r1-pad1_ net-_r1-pad2_ 1kc1 net-_c1-pad1_ gnd 1uc2 net-_c2-pad1_ gnd 0.01ur3 net-_r3-pad1_ gnd 1k* u1 net-_r3-pad1_ plot_v1v1 net-_r1-pad1_ gnd dc 5* u2 net-_c1-pad1_ ic.tran 5e-03 4e-03 0e-00* Control Statements.controlrunprint allv > plot_data_v.txtprint alli > plot_data_i.txtplot v(net-_r3-pad1_).endc.enderror reported is:doAnalyses: iteration limit reachedrun simulation(s) abortedError(parse.c--checkvalid): net: no such vector.Error(parse.c--checkvalid): a.x1.a3#branch_1_0: no such vector.Error: bad v() syntaxngspice 1 -> Interrupted once . . .Warning: clearing control structuresngspice 1 -> Thanks indeedregards
00-01M 0-10S prasadjoshee
Answer last updated on: April 28, 2020, 10:19 p.m.
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Simulating 555 based astable multivibrator
Hello Madam/SirAm getting run time error while simulating 555 based astable multivibrator. Have tried best, am not able to resolve the error. Have verified the simple ckt simulation in LT Spice, and apparently it works. Please do help in resolving the doubt. Am attaching herewith in-line the .out file* c:\\users\\prasad.joshi\\esim-workspace\\astable555\\astable555.cir.include lm555n.sub* u2 net-_c1-pad1_ ic.ic v(net-_c1-pad1_)=0x1 gnd net-_c1-pad1_ net-_r3-pad1_ net-_r1-pad1_ net-_c2-pad1_ net-_c1-pad1_ net-_r1-pad2_ net-_r1-pad1_ lm555nr2 net-_r1-pad2_ net-_c1-pad1_ 10kr1 net-_r1-pad1_ net-_r1-pad2_ 1kc1 net-_c1-pad1_ gnd 1uc2 net-_c2-pad1_ gnd 0.01ur3 net-_r3-pad1_ gnd 1k* u1 net-_r3-pad1_ plot_v1v1 net-_r1-pad1_ gnd dc 5* u2 net-_c1-pad1_ ic.tran 5e-03 4e-03 0e-00* Control Statements.controlrunprint allv > plot_data_v.txtprint alli > plot_data_i.txtplot v(net-_r3-pad1_).endc.enderror reported is:doAnalyses: iteration limit reachedrun simulation(s) abortedError(parse.c--checkvalid): net: no such vector.Error(parse.c--checkvalid): a.x1.a3#branch_1_0: no such vector.Error: bad v() syntaxngspice 1 -> Interrupted once . . .Warning: clearing control structuresngspice 1 -> Thanks indeedregards
00-01M 0-10S prasadjoshee
Answer last updated on: Nov. 20, 2019, 9:02 a.m.
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Error while simulating
Iam getting this error at the last stage of the simulationnet-_22u2-pad2_ 0.66254net-_d2-pad2_ 8.99992net-_22u2-pad1_ 0.00459836net-_22u1-pad1_ 0.00398599v1#branch -0.00842022No. of Data Rows : 1208Error: bad v() syntaxError: bad v() syntaxngspice 1 -> Interrupted once . . .Warning: clearing control structuresngspice 1 ->
11-12M 10-20S paragvpuranik
Answer last updated on: Sept. 21, 2019, 4:32 p.m.
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error in simulation
after analysis of astable multivibrator source details are blank so what i do next
12-13M 30-40S Vikas_123
Answer last updated on: Sept. 21, 2019, 4:27 p.m.
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LED.lib not found
When Converting KiCad netlist to ngspice netlist, while adding libraries to LED, LED.lib not found!! (schematic drawn own, not taken from Examples)..Pls help!
09-10M 10-20S arunps
Answer last updated on: Sept. 21, 2019, 3:04 p.m.
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Error type 3: pin connected to some other pin
with conventional 3 global errors I get Error type 3: pin connected to some other pin
07-08M 0-10S jagdish351
Answer last updated on: Sept. 21, 2019, 2:58 p.m.
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Errors except Global Labels
Pin connected to some other pin extra error is coming but no pin to drive it
07-08M 50-60S sachin.nerkar
Answer last updated on: Sept. 21, 2019, 2:58 p.m.
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Difference between components
while choosing components what is difference between normal npn transistor and eSim npn transistor? what difference it make in circuit working?
01-02M 40-50S Kalpita2019
Answer last updated on: Sept. 21, 2019, 2:54 p.m.
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Your schematic contain unknown model out
Receiving this error - Your schematic contain unknown model out.Kindly help!!!
08-09M 40-50S sunilkhatri1919
Answer last updated on: Sept. 21, 2019, 2:54 p.m.
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Device files
LED.lib file and BC547B.lib files are not found in library? What to do?
09-10M 10-20S NAVAICE
Answer last updated on: Sept. 21, 2019, 2:50 p.m.
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Error while simulating a astable multivibrator
\r\n\r\np, li { white-space: pre-wrap; }\r\n\r\nError while opening python plotting Editor. Please look at console for more details bash: ngspice : command not found
11-12M 0-10S ahersandy
Answer last updated on: Sept. 21, 2019, 2:47 p.m.
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AnOTATION
Unable to solve an issue in Electrical Rule Check at "conflict problem at pins" even after multiple trials. How to solve?
08-09M 0-10S NAVAICE
Answer last updated on: Sept. 21, 2019, 2:45 p.m.
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simulation error
Error in Simulation for astable multivibrator as \r\n\r\np, li { white-space: pre-wrap; }\r\n\r\nError while opening python plotting Editor. Please look at console for more details.
12-13M 40-50S ushajadhav
Answer last updated on: Sept. 21, 2019, 1:12 p.m.
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pwr_flag
why pwr_flag is not connected to gnd in astable multivibrator
06-07M 30-40S deepu_nivas
Answer last updated on: Sept. 21, 2019, 1:04 p.m.
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Using schematic editor
Whenever editing the parameter value of device, the schematic editor is freezing or dead. We need to click on the outside area of schematic editor.As for beginner, it is hard to connect the devices with wire, we need to be more carefully in connection. It is sometime loosing the connection with rectangle box and give the errors.
03-04M 20-30S nuwar
Answer last updated on: Sept. 21, 2019, 12:58 p.m.
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global label
is there possibilities of occurring of any error other then global label error?
07-08M 50-60S gurdipbhatia
Answer last updated on: Sept. 21, 2019, 12:56 p.m.
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Simulating an astable Multivibrator
after complition of circuit unable to open electrical parameter?
09-10M 0-10S kapil_cs27
Answer last updated on: Sept. 21, 2019, 12:49 p.m.
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global error
why should ignore global label error?
07-08M 50-60S abhimylife
Answer last updated on: Sept. 21, 2019, 12:48 p.m.
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Not getting the correct output
I have drawn the schematic and followed the instruction as per the video tutorial but I am Not getting the exact output graph after simulating it
01-02M 10-20S bala237115
Answer last updated on: Sept. 21, 2019, 12:45 p.m.
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what is Device Modeling
what to do in Device Modeling
09-10M 30-40S Tarun
Answer last updated on: Sept. 21, 2019, 12:30 p.m.
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NPN transistor No.BC547B is not available
Please help me out regarding issue
09-10M 30-40S habiburrahman.ansari
Answer last updated on: Sept. 21, 2019, 12:09 p.m.
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Device Modeling
After clicking the add file Didn't get the LED.Lib file and BC547.lib files. what is the solution?
09-10M 30-40S travindra
Answer last updated on: Sept. 20, 2019, 11:35 p.m.
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1
Schematic Creation and Simulation -
Simulating an Astable Multivibrator -
3
Mapping Components with Footprints -
4
Setting Parameters for PCB designing -
5
Laying Tracks on PCB -
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PCB Layout for Astable Multivibrator -
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Creating a Device Model -
8
Uploading a Spice Device Model -
9
Subcircuit Builder -
10
Editing a Subcircuit -
11
Uploading a spice Subcircuit file -
12
Mixed Signal Simulation using NGHDL -
13
Mixed Signal Simulation using NgVeri -
14
Makerchip IDE -
15
Advanced NgVeri -
16
eSim interface to OpenModelica
Questions posted on ST Forums:
19529 visits
Outline:
1. Creating a schematic. 2. Assigning Values to components. 3. Annotating the schematic. 4. Performing Electrical Rules Check. 5. Generating a netlist. 6. Setting transient parameters. 7. Converting KiCad netlist to ngspice netlist. 8. Assigning Device models to the semiconductor components. 9. Simulating the circuit. 10. Understanding the Python Plotting feature and ngspice terminal.
| Width: | 1200 | Height: | 798 |
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| Duration: | 00:12:41 | Size: | 9.3 MB |
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