001/C/? 



01/C^ 



ycR 



CO increasing — ^ 

 Graph 17. Phase shift of Wien bridge 



10/C^ 



100/C/? 



c 



3 



0001 



001 



001 /c/? 



QMCR \/CR 



w increasing 



\0/CR 



\00/CR 



Graph IS. Transmission characteristic of parallel T 



271 



