The circled (1) shows the radial leaded, molded safety agency recognized X capacitors ECQ-U(L) X2 and ECQ-U(G) X1 capacitors used in the LC Filter at the left by the AC input. (2) and (3) show the input and output capacitors from the ECWF and ECQ-E series as well as the surface mount ECW-U(C) series for output capacitors.