{TAIL ~ The circuit} can be modified to include a multiplication unit for multiplying the input signal, the first delayed signal or {HEAD ~ the output signal} by a given constant to obtain a desired direct current gain 
{ TAIL ~ The circuit } can be modified to include a multiplication unit for multiplying the input signal , the first delayed signal or { HEAD ~ the output signal } by a given constant to obtain a desired direct current gain
TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH