The ornamental design for an electric inductionpowersupply, substantially as shown and described.
FIG. 1 is a front perspective view of the electric induction power supply;
FIG. 2 is a back perspective view thereof;
FIG. 3 is a front elevation view thereof;
FIG. 4 is a rear elevation view thereof;
FIG. 5 is a top plan view thereof;
FIG. 6 is a bottom plan view thereof;
FIG. 7 is a left elevation view thereof;
FIG. 8 is a right elevation view thereof;
FIG. 9 is a back perspective view of a second embodiment of the electric induction power supply showing an alternate design of the rear; and,
FIG. 10 is a rear elevation view of the second embodiment of the electric induction power supply; the other views are duplicate of the first embodiment.