Figure 1 is the schematic diagram of the trifilar output transformer and shows the relative connections of the windings.

图了三并绕输出变压器的原理图，以各绕组之间的连接情况。

The three wires were fed from the three spools and wound as one wire; thus comprising the trifilar terminology.

三条从三出来绕成条，从而符合三并绕的要求。