class AM_circuit():
'''
translate a netlist into ngSpice elements
'''
def __init__(self):
pass
def load_netlist(self,netlistfile):
'''
class method to build a circuit model from a netlist
netlistfile=path/filename that contains a valid spice netlist
'''
with open(netlistfile,'r',encoding='utf-8') as f:
self.netlist = [item.strip() for item in f.readlines()[:-1]]
self.circuitname = self.netlist[0].lstrip('.title').strip()
self.instantiate_circuit()
def instantiate_circuit(self):
'''
class method that instantiates a circuit model from an inherited netlist
'''
self.circuit = Circuit(self.circuitname)
for line in self.netlist[1:]:
try:
self.add_circuit_element_from_netlist_line(line)
except:
print(traceback.format_exc())
def add_circuit_element_from_netlist_line(self,line):
'''
class method to parse a line from a netlist and add RC components to a circuit model
line=text string from netlist
'''
line = line.split(' ')
if 'R' in line[0]:
self.circuit.Resistor(line[0].lstrip('R'),line[1],line[2],kilo(float(line[3].rstrip('k'))))
if 'C' in line[0]:
self.circuit.Capacitor(line[0].lstrip('C'),line[1],line[2],float(line[3])@u_uF)
if 'I' in line[0]:
self.circuit.CurrentSource(line[0].lstrip('I'),line[1],line[2],line[3])
def get_nodal_voltages(self,analysis):
'''
class method to retrieve nodal voltages from a circuit analysis
analysis:circuit analysis (simulator.operating_point(), etc.)
returns:list
'''
nvs = {}
for key in analysis.nodes.keys():
nvs[int(key)-1] = analysis[key].T.tolist()[0]
return(nvs)
