def __init__(self, subcircuit_json):
self.__name__ = subcircuit_json["name"]
# Get components that make up subcircuit
elements = subcircuit_json["components"]
# Extract input and output nodes of subcircuit
ports = elements.pop('P')
nodes = []
for port in ports:
if port["node1"] == "gnd":
nodes.append(port["node2"])
elif port["node2"] == "gnd":
nodes.append(port["node1"])
self.__nodes__ = nodes[::-1]
# Initialize subcircuit netlist using PySpice SubCircuit module
SubCircuit.__init__(self, self.__name__, *self.__nodes__)
# build netlist
for element in elements:
if element == "R":
for resistor in elements["R"]:
self.R(resistor["id"], resistor["node1"], resistor["node2"], resistor["value"] @u_Ohm)
elif element == "L":
for inductor in elements["L"]:
self.L(inductor["id"], inductor["node1"], inductor["node2"], inductor["value"] @u_H)
elif element == "C":
for capacitor in elements["C"]:
self.C(capacitor["id"], capacitor["node1"], capacitor["node2"], capacitor["value"] @u_F)
def __init__(self, name, K, KI, AWG, MINV, MAXV):
# super().__init__()
SubCircuit.__init__(self, name, *self.__nodes__)
self.BehavioralSource(
'Vprop',
'prop',
self.gnd,
voltage_expression='{}*(V(In+)-V(In-))'.format(K),
)
self.BehavioralSource(
'Vsum',
'sum',
self.gnd,
voltage_expression='V(prop)+V(integ)',
)
self.BehavioralSource(
'Vdiffclip',
'overfl',
self.gnd,
voltage_expression='{}*(V(Out)-V(sum))'.format(AWG),
)
self.BehavioralSource(
'Vsum2',
'antiwind',
self.gnd,
voltage_expression='V(overfl)+V(prop)',
)
self.BehavioralSource(
'VClip',
'Out',
self.gnd,
voltage_expression='V(sum)< {0} ? {0} : V(sum) > {1} ? {1} : V(sum)'
.format(MINV, MAXV),
)
# integrator part - fixme with int model from NGSpice ?
self.VoltageControlledCurrentSource(
'I_Int',
'antiwind',
self.gnd,
self.gnd,
'integ',
multiplier=KI,
)
self.C('i', 'integ', self.gnd, 1)
self.R('i', 'integ', self.gnd, 1000000)
def __init__(self, name, K, KI, AWG, MINV, MAXV):
# super().__init__()
SubCircuit.__init__(self, name, *self.__nodes__)
self.BehavioralSource(
'Vprop',
'prop', self.gnd,
voltage_expression='{}*(V(In+)-V(In-))'.format(K),
)
self.BehavioralSource(
'Vsum',
'sum', self.gnd,
voltage_expression='V(prop)+V(integ)',
)
self.BehavioralSource(
'Vdiffclip',
'overfl', self.gnd,
voltage_expression='{}*(V(Out)-V(sum))'.format(AWG),
)
self.BehavioralSource(
'Vsum2',
'antiwind', self.gnd,
voltage_expression='V(overfl)+V(prop)',
)
self.BehavioralSource(
'VClip',
'Out', self.gnd,
voltage_expression='V(sum)< {0} ? {0} : V(sum) > {1} ? {1} : V(sum)'.format(MINV, MAXV),
)
# integrator part - fixme with int model from NGSpice ?
self.VoltageControlledCurrentSource(
'I_Int',
'antiwind', self.gnd, self.gnd,
'integ', multiplier=KI,
)
self.C('i', 'integ', self.gnd, 1)
self.R('i', 'integ', self.gnd, 1000000)
def __init__(self, name, R1=1 @ u_Ω, R2=2 @ u_Ω):
SubCircuit.__init__(self, name, *self.__nodes__)
self.R(1, 'n1', 'n2', R1)
self.R(2, 'n1', 'n2', R2)