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.cir
Error on line 0 :
)
unknown device type - error
Reducing trtol to 1 for xspice 'A' devices
Doing analysis at TEMP = 27.000000 and TNOM = 27.000000
Warning: Too many analog/event-driven solution alternations
Transient solution failed -
Last Node Voltages
------------------
Node Last Voltage Previous Iter
---- ------------ -------------
v_out 5 5
net-_r1-pad1_ 10 10
net-_r1-pad2_ 9.99507 9.99507
c_out 9.94573 9.94573
net-_c2-pad1_ 6.67761 6.67761
x1.18 -65986.8 -65986.8
x1.23 3.34705 3.34705
x1.9 0.2 0.2
x1.2 0.2 0.2
x1.20 -65986.8 -65986.8
x1.17 32681.2 32681.2
x1.19 32681.2 32681.2
x1.11 5 5
x1.12 0 0
e.x1.e1#branch 0 0
e.x1.e2#branch 0 0
v1#branch -0.000669411 -0.000669411
a.x1.a4#branch_1_0 0 0
a.x1.a3#branch_1_0 0 0
a.x1.a6#branch_1_0 4.03e-12 4.03e-12
a.x1.a5#branch_1_0 -0.005 -0.005
doAnalyses: Too many iterations without convergence
run simulation(s) aborted
Error(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 ->
eSim Simulating-an-Astable-Multivibrator 12-13 min 40-50 sec 10-05-20, 9:32 a.m. prof.abpatil@gmail.com

#### Answers:

Please look at the netlist given here and compare it with yours, you can identify the problems and rectify them: https://github.com/FOSSEE/eSim/blob/master/Examples/Astable555/Astable555.cir.out
10-05-20, 9:55 a.m. Saurabhb17

Click here to reply/comment online