def fit_curve(self):
if self.running == True or self.data[0] == []:
return
# for i in range(len(self.data[1])):
# if self.data[1][i] > 0.1:
# break
# px = self.data[0][i:]
# py = self.data[1][i:]
f = em.fit_exp(self.data[0], self.data[1])
if f != None:
self.traces.append(
self.pwin.plot(f[2], f[3], pen=self.traceCols[self.trial % 5]))
self.trial += 1
k = 1.38e-23 # Boltzmann const
q = 1.6e-19 # unit charge
Io = f[1][0]
a1 = f[1][1]
T = 300.0 # Room temp in Kelvin
n = q / (a1 * k * T)
ss1 = '%5.2e' % Io
ss2 = '%5.2f' % n
self.msg(
self.tr('Fitted with Diode Equation : Io = ') + ss1 +
self.tr(' mA , Ideality factor = ') + ss2 +
'Knee Voltage Approx: ' + str(f[4]))
self.history.append((self.data[0], f[0]))
else:
self.msg(self.tr('Analysis failed. Could not fit data'))
def fit_curve(self):
if self.history != []:
fa = em.fit_exp(self.history[-1][0], self.history[-1][1])
else:
self.msg(self.tr('No data to analyze.'))
return
try:
rval = float(self.Rval.text()) / 1000 # convert to kOhms
except:
return
if fa != None:
pa = fa[1]
rc = abs(1.0 / pa[1])
self.traces.append(
self.pwin.plot(self.history[-1][0],
fa[0],
pen=self.traceCols[self.trial % 5]))
self.trial += 1
ss = '%5.1f' % rc
self.msg(
self.tr('Fitted data with V=Vo*exp(-t/RC). RC = ') + ss +
self.tr(' mSec'))
else:
self.msg(self.tr('Failed to fit the curve with V=Vo*exp(-t/RC)'))
def fit_curve(self):
if self.running == True or self.data[0]==[]:
return
f = em.fit_exp(self.data[0], self.data[1])
if f != None:
self.traces.append(self.pwin.plot(self.data[0], f[0], pen = self.traceCols[self.trial%5]))
self.trial += 1
k = 1.38e-23 # Boltzmann const
q = 1.6e-19 # unit charge
Io = f[1][0]
a1 = f[1][1]
T = 300.0 # Room temp in Kelvin
n = q/(a1*k*T)
ss1 = '%5.2e'%Io
ss2 = '%5.2f'%n
self.msg(self.tr('Fitted with Diode Equation : Io = ') +ss1 + self.tr(' mA , Ideality factor = ') + ss2)
self.history.append((self.data[0], f[0]))
else:
self.msg(self.tr('Analysis failed. Could not fit data'))
def fit_curve(self):
if self.running == True or self.data[0]==[]:
return
f = em.fit_exp(self.data[0], self.data[1])
if f != None:
self.traces.append(self.pwin.plot(self.data[0], f[0], pen = self.traceCols[self.trial%5]))
self.trial += 1
k = 1.38e-23 # Boltzmann const
q = 1.6e-19 # unit charge
Io = f[1][0]
a1 = f[1][1]
T = 300.0 # Room temp in Kelvin
n = q/(a1*k*T)
ss1 = '%5.2e'%Io
ss2 = '%5.2f'%n
self.msg(self.tr('Fitted with Diode Equation : Io = ') +ss1 + self.tr(' mA , Ideality factor = ') + ss2)
self.history.append((self.data[0], f[0]))
else:
self.msg(self.tr('Analysis failed. Could not fit data'))
def fit_curve(self):
try:
Rext = float(self.Rextext.text())
except:
self.msg(self.tr('Enter a valid Resistance'))
return
if self.history != []:
sp = self.getSP(self.history[-1][1])
ta = self.history[-1][0][sp:]
va = self.history[-1][1][sp:]
fa = em.fit_exp(ta, va)
else:
self.msg(self.tr('No data to analyze.'))
return
if fa != None:
try:
self.p.set_state(
OD1=1
) # Do some DC work to find the resistance of the Inductor
time.sleep(.5)
v = self.p.get_voltage('A2')
Vind = self.p.get_voltage('A1') # voltage across the Inductor
except:
self.comerr()
return
if v > 4.0: # Means user has connected OD1 to A2
vtotal = v
else:
vtotal = 5.0 # Assume OD1 = 5 volts
i = (vtotal - Vind) / Rext
Rind = Vind / i
pa = fa[1]
par1 = abs(1.0 / pa[1])
ss1 = '%5.3f' % par1
ss2 = '%5.0f' % Rind
ss3 = '%5.1f' % ((Rext + Rind) * par1)
self.msg(
self.tr('L/R = ') + ss1 + self.tr(' mSec : Rind = ') + ss2 +
self.tr(' Ohm : L = ') + ss3 + self.tr(' mH'))
self.traces.append(self.pwin.plot(ta, va, pen=self.trial * 2))
else:
self.msg(self.tr('Failed to fit the curve with V=Vo*exp(-t*L/R)'))
def fit_curve(self):
try:
Rext = float(self.Rextext.text())
except:
self.msg(self.tr('Enter a valid Resistance'))
return
if self.history != []:
sp = self.getSP(self.history[-1][1])
ta = self.history[-1][0][sp:]
va = self.history[-1][1][sp:]
fa = em.fit_exp(ta,va)
else:
self.msg(self.tr('No data to analyze.'))
return
if fa != None:
try:
self.p.set_state(OD1=1) # Do some DC work to find the resistance of the Inductor
time.sleep(.5)
v = self.p.get_voltage('A2')
Vind = self.p.get_voltage('A1') # voltage across the Inductor
except:
self.comerr()
return
if v > 4.0: # Means user has connected OD1 to A2
vtotal = v
else:
vtotal = 5.0 # Assume OD1 = 5 volts
i = (vtotal - Vind)/Rext
Rind = Vind/i
pa = fa[1]
par1 = abs(1.0 / pa[1])
ss1 = '%5.3f'%par1
ss2 = '%5.0f'%Rind
ss3 = '%5.1f'%((Rext+Rind)*par1)
self.msg(self.tr('L/R = ') + ss1 + self.tr(' mSec : Rind = ') + ss2 + self.tr(' Ohm : L = ') + ss3 + self.tr(' mH'))
self.traces.append(self.pwin.plot(ta,va, pen = self.trial*2))
else:
self.msg(self.tr('Failed to fit the curve with V=Vo*exp(-t*L/R)'))
