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Resistance calculator: Difference between revisions
→{{header|Python}}
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6.000 10.800 1.800 19.440 | r
=={{header|Python RPN}}==
<lang python>
class Resistor :
def __init__(self, resistance, a=None, b=None, symbol='r'):
self.resistance = resistance
self.a = a
self.b = b
self.symbol = symbol
def res(self) : return self.resistance
def setVoltage(self, voltage): self.voltage = voltage
def current(self) : return self.voltage / self.res()
def effect(self) : return self.current() * self.voltage
def report(self,level=""):
print(f"{self.res():8.3f} {self.voltage:8.3f} {self.current():8.3f} {self.effect():8.3f} {level}{self.symbol}")
if self.a: self.a.report(level + "| ")
if self.b: self.b.report(level + "| ")
class Serial(Resistor) :
def __init__(self, a, b) : super().__init__(0, b, a, '+')
def res(self) : return self.a.res() + self.b.res()
def setVoltage(self, voltage) :
ra = self.a.res()
rb = self.b.res()
self.a.setVoltage(ra/(ra+rb) * voltage)
self.b.setVoltage(rb/(ra+rb) * voltage)
self.voltage = voltage
class Parallel(Resistor) :
def __init__(self,a,b) : super().__init__(0, b, a, '*')
def res(self) : return 1 / (1 / self.a.res() + 1 / self.b.res())
def setVoltage(self, voltage) :
self.a.setVoltage(voltage)
self.b.setVoltage(voltage)
self.voltage = voltage
def build(s) :
stack = []
for word in s.split(' '):
if word == "+": stack.append(Serial(stack.pop(), stack.pop()))
elif word == "*": stack.append(Parallel(stack.pop(), stack.pop()))
else: stack.append(Resistor(float(word)))
return stack.pop()
node = build("10 2 + 6 * 8 + 6 * 4 + 8 * 4 + 8 * 6 +")
print(" Ohm Volt Ampere Watt Network tree")
node.setVoltage(18.0)
node.report()
</lang>
=={{header|Python Infix}}==
<lang python>
class Resistor :
def __init__(self, resistance, a=None, b=None, symbol='r') :
self.resistance = resistance
self.a = a
self.b = b
self.symbol = symbol
def res(self) : return self.resistance
def setVoltage(self, voltage) : self.voltage = voltage
def current(self) : return self.voltage / self.res()
def effect(self) : return self.current() * self.voltage
def report(self,level="") :
print(f"{self.res():8.3f} {self.voltage:8.3f} {self.current():8.3f} {self.effect():8.3f} {level}{self.symbol}")
if self.a: self.a.report(level + "| ")
if self.b: self.b.report(level + "| ")
def __add__(self,other) : return Serial(self,other)
def __mul__(self,other) : return Parallel(self,other)
class Serial(Resistor) :
def __init__(self, a, b) : super().__init__(0, a, b, '+')
def res(self) : return self.a.res() + self.b.res()
def setVoltage(self, voltage) :
ra = self.a.res()
rb = self.b.res()
self.a.setVoltage(ra/(ra+rb) * voltage)
self.b.setVoltage(rb/(ra+rb) * voltage)
self.voltage = voltage
class Parallel(Resistor) :
def __init__(self,a,b) : super().__init__(0, a, b, '*')
def res(self) : return 1 / (1 / self.a.res() + 1 / self.b.res())
def setVoltage(self, voltage):
self.a.setVoltage(voltage)
self.b.setVoltage(voltage)
self.voltage = voltage
[R1,R2,R3,R4,R5,R6,R7,R8,R9,R10] = [Resistor(res) for res in [6,8,4,8,4,6,8,10,6,2]]
node = ((((R8+R10) * R9 + R7) * R6 + R5) * R4 + R3) * R2 + R1
node.setVoltage(18)
print(" Ohm Volt Ampere Watt Network tree")
node.report()
</lang>
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