Recibo errores singulares cuando simulo una fuente de corriente en serie con un condensador con el siguiente archivo .cir:
* Spice netlister for gnetlist
C1 1 0 1
I1 1 0 1
.TRAN 100u 6m
(Entiendo que un faradio es enorme, solo para facilitar los números. He probado valores de condensadores más pequeños, pero no han ayudado).
Basado en mi análisis,
I = C*(dV/dt)
Integrante, espero
V = (I*t)/C.
Por lo tanto, esperaría un aumento de voltaje en el rango de mV a lo largo del tiempo cuando graficé v (1), pero aparece el siguiente error en la parte inferior de este mensaje. Cuando cambio el C1 en un R1, no se observa ningún error. ¿Qué está pasando?
Doing analysis at TEMP = 27.000000 and TNOM = 27.000000
Warning: singular matrix: check nodes 1 and 1
Note: Starting dynamic gmin stepping
Trying gmin = 1.0000E-03 Note: One successful gmin step
Trying gmin = 1.0000E-04 Note: One successful gmin step
Trying gmin = 1.0000E-05 Note: One successful gmin step
Trying gmin = 1.0000E-06 Note: One successful gmin step
Trying gmin = 1.0000E-07 Note: One successful gmin step
Trying gmin = 1.0000E-08 Note: One successful gmin step
Trying gmin = 1.0000E-09 Note: One successful gmin step
Trying gmin = 1.0000E-10 Note: One successful gmin step
Trying gmin = 1.0000E-11 Note: One successful gmin step
Trying gmin = 1.0000E-12 Note: One successful gmin step
Trying gmin = 1.0000E-12 Note: One successful gmin step
Warning: singular matrix: check nodes 1 and 1
Warning: Dynamic gmin stepping failed
Note: Starting source stepping
Supplies reduced to 0.0000% Warning: singular matrix: check nodes 1 and 1
Trying gmin = 1.0000E-02 Note: One successful gmin step
Trying gmin = 1.0000E-03 Note: One successful gmin step
Trying gmin = 1.0000E-04 Note: One successful gmin step
Trying gmin = 1.0000E-05 Note: One successful gmin step
Trying gmin = 1.0000E-06 Note: One successful gmin step
Trying gmin = 1.0000E-07 Note: One successful gmin step
Trying gmin = 1.0000E-08 Note: One successful gmin step
Trying gmin = 1.0000E-09 Note: One successful gmin step
Trying gmin = 1.0000E-10 Note: One successful gmin step
Trying gmin = 1.0000E-11 Note: One successful gmin step
Trying gmin = 1.0000E-12 Note: One successful gmin step
Note: One successful source step
Supplies reduced to 0.1000% Warning: singular matrix: check nodes 1 and 1
Supplies reduced to 0.0000% Warning: singular matrix: check nodes 1 and 1
Warning: source stepping failed
Transient solution failed -
Last Node Voltages
------------------
Node Last Voltage Previous Iter
---- ------------ -------------
1 0 0
doAnalyses: iteration limit reached
run simulation(s) aborted