THE GROUP CHARACTERS OF GYRATORS AND IDEAL TRANSFORMERS
回转器和理想变压器的群特性

The set GIT (2) of all gyrators and ideal transformers is studied by the method of group theory in this paper. The results show that the set GIT (2) forms a group, and it is a subgroup of GL(2). The inner structure of GIT (2), which shows the relations between gyrators and ideal transformers, is also studied. Finally, the properties of the direct productnetwork of two-port network is analysed.