Author_Institution : 
Dept. of Elec. Engrg., Columbia University, New York, N. Y. Temporarily on leave from C.S.I.R.O., Div. of Electrotechnology, Sydney, Australia
         
        
            Abstract : 
IN RECENT years time-varying circuits have attracted considerable attention in the literature,1 but little seems to have been done2 for those cases in which the input to such circuits is a random one.