CauerLowPassOPVCauer low pass filter with operational amplifiers 
This information is part of the Modelica Standard Library maintained by the Modelica Association.
The example Cauer Filter is a lowpassfilter of the fifth order. It is realized using an analog network with operational amplifiers. The voltage source V is the input voltage (step), and the OP5.out.v is the filter output voltage. The pulse response is calculated.
This model is identical to the CauerLowPassAnalog example, but inverting. To get the same response as that of the CauerLowPassAnalog example, a negative voltage step is used as input.
The simulation end time should be 60. Please plot both V.v (which is the inverted input voltage) and OP5.p.v (output voltage). Compare this result with the CauerLowPassAnalog result.
During translation some warnings are issued concerning resistor values (Value=1 not in range [0,1e100]). Do not worry about it. The negative values are o.k.
l1 
Value: 1.304 Type: Capacitance (F) Description: filter coefficient i1 

l2 
Value: 0.8586 Type: Capacitance (F) Description: filter coefficient i2 
c1 
Value: 1.072 Type: Capacitance (F) Description: filter coefficient c1 
c2 
Value: 1 / (1.704992 ^ 2 * l1) Type: Capacitance (F) Description: filter coefficient c2 
c3 
Value: 1.682 Type: Capacitance (F) Description: filter coefficient c3 
c4 
Value: 1 / (1.179945 ^ 2 * l2) Type: Capacitance (F) Description: filter coefficient c4 
c5 
Value: 0.7262 Type: Capacitance (F) Description: filter coefficient c5 
C1 
Type: Capacitor 


C2 
Type: Capacitor 

C3 
Type: Capacitor 

C4 
Type: Capacitor 

C5 
Type: Capacitor 

R1 
Type: Resistor 

R2 
Type: Resistor 

R3 
Type: Resistor 

Op1 
Type: IdealOpAmp3Pin 

G 
Type: Ground 

R4 
Type: Resistor 

R5 
Type: Resistor 

Op2 
Type: IdealOpAmp3Pin 

Op3 
Type: IdealOpAmp3Pin 

G1 
Type: Ground 

R6 
Type: Resistor 

R7 
Type: Resistor 

C6 
Type: Capacitor 

R8 
Type: Resistor 

R9 
Type: Resistor 

R10 
Type: Resistor 

Op4 
Type: IdealOpAmp3Pin 

Op5 
Type: IdealOpAmp3Pin 

C7 
Type: Capacitor 

C8 
Type: Capacitor 

C9 
Type: Capacitor 

R11 
Type: Resistor 

G2 
Type: Ground 

G3 
Type: Ground 

G4 
Type: Ground 

V 
Type: StepVoltage 

Ground1 
Type: Ground 