Magnetic core
FIG. 1 is a perspective view of a magnetic core showing our new design; 
     FIG. 2 is a top plan view thereof; 
     FIG. 3 is a bottom plan view thereof; 
     FIG. 4 is a front elevational view thereof; 
     FIG. 5 is a side elevational view thereof, the opposite side being identical; 
     FIG. 6 is a rear elevational view thereof; and, 
     FIG. 7 is a cross-sectional view thereof taken generally along sectional lines 7--7 of FIG. 6.