Toy train transformer controller

FIG. 1 is a perspective view of an ornamental design for a toy train transformer controller having a control handle rotatable between a generally horizontal position and a upwardly vertical position and ornamental vertically extending venting ribs;

FIG. 2 is a front side view thereof;

FIG. 3 is a top side view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a rear side view thereof;

FIG. 6 is a bottom side view thereof; and,

FIG. 7 is a left side view thereof.