def RCLowPassFilterDetail(request):
o_Form = RCLowPassForm()
a_Results = -1
if request.method == 'POST':
o_Form = RCLowPassForm(request.POST)
if o_Form.is_valid():
o_RCLowPassFilter = RCLowPass(
s_Resistance=o_Form["s_ResistorValue"].value(),
s_Capacitance=o_Form["s_CapacitorValue"].value())
a_Results = [
o_RCLowPassFilter.f_Resistance,
o_RCLowPassFilter.f_Capacitance,
o_RCLowPassFilter.f_CutoffFrequency,
o_RCLowPassFilter.f_TimeConstant,
o_RCLowPassFilter.f_DampingCoefficient,
o_RCLowPassFilter.f_ResonantFrequency,
o_RCLowPassFilter.s_TransferFunction
]
ctx = {"o_Form": o_Form, "a_Results": a_Results}
return render(request, "filterdesigner/RCLowPassFilterDetail.html", ctx)
def test_correct_transfer_function(self):
o_TestFilter = RCLowPass(s_Resistance="440k", s_Capacitance="312n")
s_Expected = "7.3/(s+7.3)"
self.assertEqual(o_TestFilter.s_TransferFunction, s_Expected)
def test_correct_resonant_frequency(self):
o_TestFilter = RCLowPass(s_Resistance="691.5G", s_Capacitance="14")
f_Expected = Number(s_Input="0.103p").f_Value
self.assertEqual(o_TestFilter.f_ResonantFrequency, f_Expected)
def test_correct_damping_coefficient(self):
o_TestFilter = RCLowPass(s_Resistance="691.5G", s_Capacitance="14")
f_Expected = Number(s_Input="0.103p").f_Value
self.assertEqual(o_TestFilter.f_DampingCoefficient, f_Expected)
def test_correct_time_constant(self):
o_TestFilter = RCLowPass(s_Resistance="56M", s_Capacitance="15n")
f_Expected = 0.84
self.assertEqual(o_TestFilter.f_TimeConstant, f_Expected)
def test_correct_cutoff_frequency(self):
o_TestFilter = RCLowPass(s_Resistance="433", s_Capacitance="42.9u")
f_Expected = 8.57
self.assertEqual(o_TestFilter.f_CutoffFrequency, f_Expected)
def test_correct_construciton_capacitance(self):
o_TestFilter = RCLowPass(s_Resistance="435M", s_Capacitance='1.5m')
f_Expected = 0.0015
self.assertEqual(o_TestFilter.f_Capacitance, f_Expected)
def test_correct_construciton_resistance(self):
o_TestFilter = RCLowPass(s_Resistance="310.3k", s_Capacitance="34.6u")
f_Expected = 310300
self.assertEqual(o_TestFilter.f_Resistance, f_Expected)