## Get C matrix from ac-analysis
## FIXME, there must be a better way
acx = gnucap.cvar.CKT_BASE_acx ## Static attributes must be accessed through cvar
acx.zero()
card_list = gnucap.cvar.CARD_LIST_card_list
# card_list.do_ac()
# card_list.ac_load()
C_bs = gnucap.bsmatrix_to_array_c(acx)
self.lastC = np.imag(C_bs)
self.lastC = np.array([[1e-6, 0], [0, 0]])
mytran = MyTransient()
gnucap.attach_command("mytran", mytran)
gnucap.command("store tran v(2)")
t0 = 0
alpha = 1
gnucap.command("options method euler")
gnucap.command("mytran 1e-4 1e-3 0")
while True:
n = gnucap.cvar.status.total_nodes
residual = mytran.v0_n - mytran.v0_0
print "residual: ", np.sqrt(np.dot(residual, residual))
## FIXME, there must be a better way
acx = gnucap.cvar.CKT_BASE_acx ## Static attributes must be accessed through cvar
acx.zero()
card_list = gnucap.cvar.CARD_LIST_card_list
# card_list.do_ac()
# card_list.ac_load()
C_bs = gnucap.bsmatrix_to_array_c(acx)
self.lastC = np.imag(C_bs)
self.lastC = np.array([[1e-6, 0],
[0, 0]])
mytran = MyTransient()
gnucap.attach_command("mytran", mytran)
gnucap.command("store tran v(2)")
t0 = 0
alpha = 1
gnucap.command("options method euler")
gnucap.command("mytran 1e-4 1e-3 0")
while True:
n = gnucap.cvar.status.total_nodes
residual = mytran.v0_n - mytran.v0_0
print "residual: ", np.sqrt(np.dot(residual, residual))
card_list.do_ac()
card_list.ac_load()
print "Loaded AC-matrix", gnucap.get_complex_array(gnucap.cvar.SIM_ac, n)
print gnucap.bsmatrix_to_array_c(acx)
## Solve
acx.lu_decomp()
acx.fbsub(gnucap.cvar.SIM_ac)
print "rhs after", gnucap.get_complex_array(gnucap.cvar.SIM_ac, n)
def setup(self, cmd):
pass
def sweep(self):
pass
myac = MyAC()
gnucap.attach_command("myac", myac)
gnucap.command("store ac vm(2)")
gnucap.command("myac")
w= gnucap.SIM.find_wave("vm(2)")
x,y = gnucap.wave_to_arrays(w)
print x,y