Power supply for plant lamp

FIG. 1 is a perspective view for a power supply for plant lamp showing our new design;

FIG. 2 is another perspective view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is an enlarged left side view thereof;

FIG. 6 is an enlarged right side view thereof;

FIG. 7 is a top view thereof;

FIG. 8 is a bottom view thereof; and,

FIG. 9 is a front, top, and left side perspective view of a power supply for plant lamp embodying my new design, shown in an environment of use.

The additional broken lines shown in FIG. 9 depict environment and form no part of the claimed design.